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/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.hadoop.hive.ql.exec;
import static org.apache.commons.lang.StringUtils.join;
import static org.apache.hadoop.util.StringUtils.stringifyException;
import java.io.BufferedWriter;
import java.io.DataOutputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.OutputStreamWriter;
import java.io.Serializable;
import java.io.Writer;
import java.net.URI;
import java.net.URISyntaxException;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.Comparator;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Iterator;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
import java.util.Set;
import java.util.SortedSet;
import java.util.TreeMap;
import java.util.TreeSet;
import com.google.common.collect.Iterables;
import org.apache.commons.lang.StringEscapeUtils;
import org.apache.commons.lang.StringUtils;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.fs.FSDataOutputStream;
import org.apache.hadoop.fs.FileStatus;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.FsShell;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.hive.common.FileUtils;
import org.apache.hadoop.hive.common.StatsSetupConst;
import org.apache.hadoop.hive.common.type.HiveDecimal;
import org.apache.hadoop.hive.conf.HiveConf;
import org.apache.hadoop.hive.conf.HiveConf.ConfVars;
import org.apache.hadoop.hive.metastore.MetaStoreUtils;
import org.apache.hadoop.hive.metastore.PartitionDropOptions;
import org.apache.hadoop.hive.metastore.ProtectMode;
import org.apache.hadoop.hive.metastore.TableType;
import org.apache.hadoop.hive.metastore.Warehouse;
import org.apache.hadoop.hive.metastore.api.AlreadyExistsException;
import org.apache.hadoop.hive.metastore.api.ColumnStatisticsObj;
import org.apache.hadoop.hive.metastore.api.Database;
import org.apache.hadoop.hive.metastore.api.FieldSchema;
import org.apache.hadoop.hive.metastore.api.GetOpenTxnsInfoResponse;
import org.apache.hadoop.hive.metastore.api.Index;
import org.apache.hadoop.hive.metastore.api.InvalidOperationException;
import org.apache.hadoop.hive.metastore.api.MetaException;
import org.apache.hadoop.hive.metastore.api.NoSuchObjectException;
import org.apache.hadoop.hive.metastore.api.Order;
import org.apache.hadoop.hive.metastore.api.PrincipalType;
import org.apache.hadoop.hive.metastore.api.RolePrincipalGrant;
import org.apache.hadoop.hive.metastore.api.SerDeInfo;
import org.apache.hadoop.hive.metastore.api.ShowCompactResponse;
import org.apache.hadoop.hive.metastore.api.ShowCompactResponseElement;
import org.apache.hadoop.hive.metastore.api.ShowLocksResponse;
import org.apache.hadoop.hive.metastore.api.ShowLocksResponseElement;
import org.apache.hadoop.hive.metastore.api.SkewedInfo;
import org.apache.hadoop.hive.metastore.api.StorageDescriptor;
import org.apache.hadoop.hive.metastore.api.TxnInfo;
import org.apache.hadoop.hive.ql.Context;
import org.apache.hadoop.hive.ql.DriverContext;
import org.apache.hadoop.hive.ql.ErrorMsg;
import org.apache.hadoop.hive.ql.QueryPlan;
import org.apache.hadoop.hive.ql.exec.ArchiveUtils.PartSpecInfo;
import org.apache.hadoop.hive.ql.exec.tez.TezTask;
import org.apache.hadoop.hive.ql.hooks.ReadEntity;
import org.apache.hadoop.hive.ql.hooks.WriteEntity;
import org.apache.hadoop.hive.ql.io.RCFileInputFormat;
import org.apache.hadoop.hive.ql.io.merge.MergeFileTask;
import org.apache.hadoop.hive.ql.io.merge.MergeFileWork;
import org.apache.hadoop.hive.ql.io.parquet.serde.ParquetHiveSerDe;
import org.apache.hadoop.hive.ql.io.rcfile.truncate.ColumnTruncateTask;
import org.apache.hadoop.hive.ql.io.rcfile.truncate.ColumnTruncateWork;
import org.apache.hadoop.hive.ql.lockmgr.DbLockManager;
import org.apache.hadoop.hive.ql.lockmgr.HiveLock;
import org.apache.hadoop.hive.ql.lockmgr.HiveLockManager;
import org.apache.hadoop.hive.ql.lockmgr.HiveLockMode;
import org.apache.hadoop.hive.ql.lockmgr.HiveLockObject;
import org.apache.hadoop.hive.ql.lockmgr.HiveLockObject.HiveLockObjectData;
import org.apache.hadoop.hive.ql.lockmgr.HiveTxnManager;
import org.apache.hadoop.hive.ql.metadata.CheckResult;
import org.apache.hadoop.hive.ql.metadata.Hive;
import org.apache.hadoop.hive.ql.metadata.HiveException;
import org.apache.hadoop.hive.ql.metadata.HiveMetaStoreChecker;
import org.apache.hadoop.hive.ql.metadata.HiveStorageHandler;
import org.apache.hadoop.hive.ql.metadata.HiveUtils;
import org.apache.hadoop.hive.ql.metadata.InvalidTableException;
import org.apache.hadoop.hive.ql.metadata.Partition;
import org.apache.hadoop.hive.ql.metadata.PartitionIterable;
import org.apache.hadoop.hive.ql.metadata.Table;
import org.apache.hadoop.hive.ql.metadata.formatting.MetaDataFormatUtils;
import org.apache.hadoop.hive.ql.metadata.formatting.MetaDataFormatter;
import org.apache.hadoop.hive.ql.parse.AlterTablePartMergeFilesDesc;
import org.apache.hadoop.hive.ql.parse.BaseSemanticAnalyzer;
import org.apache.hadoop.hive.ql.parse.DDLSemanticAnalyzer;
import org.apache.hadoop.hive.ql.parse.ReplicationSpec;
import org.apache.hadoop.hive.ql.plan.AddPartitionDesc;
import org.apache.hadoop.hive.ql.plan.AlterDatabaseDesc;
import org.apache.hadoop.hive.ql.plan.AlterIndexDesc;
import org.apache.hadoop.hive.ql.plan.AlterTableAlterPartDesc;
import org.apache.hadoop.hive.ql.plan.AlterTableDesc;
import org.apache.hadoop.hive.ql.plan.AlterTableDesc.AlterTableTypes;
import org.apache.hadoop.hive.ql.plan.AlterTableExchangePartition;
import org.apache.hadoop.hive.ql.plan.AlterTableSimpleDesc;
import org.apache.hadoop.hive.ql.plan.CreateDatabaseDesc;
import org.apache.hadoop.hive.ql.plan.CreateIndexDesc;
import org.apache.hadoop.hive.ql.plan.CreateTableDesc;
import org.apache.hadoop.hive.ql.plan.CreateTableLikeDesc;
import org.apache.hadoop.hive.ql.plan.CreateViewDesc;
import org.apache.hadoop.hive.ql.plan.DDLWork;
import org.apache.hadoop.hive.ql.plan.DescDatabaseDesc;
import org.apache.hadoop.hive.ql.plan.DescFunctionDesc;
import org.apache.hadoop.hive.ql.plan.DescTableDesc;
import org.apache.hadoop.hive.ql.plan.DropDatabaseDesc;
import org.apache.hadoop.hive.ql.plan.DropIndexDesc;
import org.apache.hadoop.hive.ql.plan.DropTableDesc;
import org.apache.hadoop.hive.ql.plan.FileMergeDesc;
import org.apache.hadoop.hive.ql.plan.GrantDesc;
import org.apache.hadoop.hive.ql.plan.GrantRevokeRoleDDL;
import org.apache.hadoop.hive.ql.plan.ListBucketingCtx;
import org.apache.hadoop.hive.ql.plan.LockDatabaseDesc;
import org.apache.hadoop.hive.ql.plan.LockTableDesc;
import org.apache.hadoop.hive.ql.plan.MsckDesc;
import org.apache.hadoop.hive.ql.plan.OperatorDesc;
import org.apache.hadoop.hive.ql.plan.OrcFileMergeDesc;
import org.apache.hadoop.hive.ql.plan.PrincipalDesc;
import org.apache.hadoop.hive.ql.plan.PrivilegeDesc;
import org.apache.hadoop.hive.ql.plan.PrivilegeObjectDesc;
import org.apache.hadoop.hive.ql.plan.RCFileMergeDesc;
import org.apache.hadoop.hive.ql.plan.RenamePartitionDesc;
import org.apache.hadoop.hive.ql.plan.RevokeDesc;
import org.apache.hadoop.hive.ql.plan.RoleDDLDesc;
import org.apache.hadoop.hive.ql.plan.ShowColumnsDesc;
import org.apache.hadoop.hive.ql.plan.ShowCompactionsDesc;
import org.apache.hadoop.hive.ql.plan.ShowConfDesc;
import org.apache.hadoop.hive.ql.plan.ShowCreateTableDesc;
import org.apache.hadoop.hive.ql.plan.ShowDatabasesDesc;
import org.apache.hadoop.hive.ql.plan.ShowFunctionsDesc;
import org.apache.hadoop.hive.ql.plan.ShowGrantDesc;
import org.apache.hadoop.hive.ql.plan.ShowIndexesDesc;
import org.apache.hadoop.hive.ql.plan.ShowLocksDesc;
import org.apache.hadoop.hive.ql.plan.ShowPartitionsDesc;
import org.apache.hadoop.hive.ql.plan.ShowTableStatusDesc;
import org.apache.hadoop.hive.ql.plan.ShowTablesDesc;
import org.apache.hadoop.hive.ql.plan.ShowTblPropertiesDesc;
import org.apache.hadoop.hive.ql.plan.ShowTxnsDesc;
import org.apache.hadoop.hive.ql.plan.SwitchDatabaseDesc;
import org.apache.hadoop.hive.ql.plan.TezWork;
import org.apache.hadoop.hive.ql.plan.TruncateTableDesc;
import org.apache.hadoop.hive.ql.plan.UnlockDatabaseDesc;
import org.apache.hadoop.hive.ql.plan.UnlockTableDesc;
import org.apache.hadoop.hive.ql.plan.api.StageType;
import org.apache.hadoop.hive.ql.security.authorization.AuthorizationUtils;
import org.apache.hadoop.hive.ql.security.authorization.plugin.HiveAuthorizer;
import org.apache.hadoop.hive.ql.security.authorization.plugin.HivePrincipal;
import org.apache.hadoop.hive.ql.security.authorization.plugin.HivePrivilege;
import org.apache.hadoop.hive.ql.security.authorization.plugin.HivePrivilegeInfo;
import org.apache.hadoop.hive.ql.security.authorization.plugin.HivePrivilegeObject;
import org.apache.hadoop.hive.ql.security.authorization.plugin.HiveRoleGrant;
import org.apache.hadoop.hive.ql.security.authorization.plugin.HiveV1Authorizer;
import org.apache.hadoop.hive.ql.session.SessionState;
import org.apache.hadoop.hive.serde.serdeConstants;
import org.apache.hadoop.hive.serde2.AbstractSerDe;
import org.apache.hadoop.hive.serde2.Deserializer;
import org.apache.hadoop.hive.serde2.MetadataTypedColumnsetSerDe;
import org.apache.hadoop.hive.serde2.SerDeSpec;
import org.apache.hadoop.hive.serde2.columnar.ColumnarSerDe;
import org.apache.hadoop.hive.serde2.dynamic_type.DynamicSerDe;
import org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe;
import org.apache.hadoop.hive.serde2.objectinspector.ObjectInspector;
import org.apache.hadoop.hive.serde2.objectinspector.ObjectInspectorConverters;
import org.apache.hadoop.hive.serde2.objectinspector.ObjectInspectorConverters.Converter;
import org.apache.hadoop.hive.serde2.objectinspector.primitive.PrimitiveObjectInspectorFactory;
import org.apache.hadoop.hive.serde2.typeinfo.DecimalTypeInfo;
import org.apache.hadoop.hive.serde2.typeinfo.TypeInfo;
import org.apache.hadoop.hive.serde2.typeinfo.TypeInfoFactory;
import org.apache.hadoop.hive.serde2.typeinfo.TypeInfoUtils;
import org.apache.hadoop.hive.shims.HadoopShims;
import org.apache.hadoop.hive.shims.HadoopShims.HdfsFileStatus;
import org.apache.hadoop.hive.shims.ShimLoader;
import org.apache.hadoop.io.IOUtils;
import org.apache.hadoop.tools.HadoopArchives;
import org.apache.hadoop.util.ToolRunner;
import org.apache.hive.common.util.AnnotationUtils;
import org.apache.hive.common.util.ReflectionUtil;
import org.stringtemplate.v4.ST;
/**
* DDLTask implementation.
*
**/
public class DDLTask extends Task implements Serializable {
private static final long serialVersionUID = 1L;
private static final Log LOG = LogFactory.getLog("hive.ql.exec.DDLTask");
private static final int separator = Utilities.tabCode;
private static final int terminator = Utilities.newLineCode;
// These are suffixes attached to intermediate directory names used in the
// archiving / un-archiving process.
private static String INTERMEDIATE_ARCHIVED_DIR_SUFFIX;
private static String INTERMEDIATE_ORIGINAL_DIR_SUFFIX;
private static String INTERMEDIATE_EXTRACTED_DIR_SUFFIX;
private MetaDataFormatter formatter;
@Override
public boolean requireLock() {
return this.work != null && this.work.getNeedLock();
}
public DDLTask() {
super();
}
@Override
public void initialize(HiveConf conf, QueryPlan queryPlan, DriverContext ctx) {
super.initialize(conf, queryPlan, ctx);
// Pick the formatter to use to display the results. Either the
// normal human readable output or a json object.
formatter = MetaDataFormatUtils.getFormatter(conf);
INTERMEDIATE_ARCHIVED_DIR_SUFFIX =
HiveConf.getVar(conf, ConfVars.METASTORE_INT_ARCHIVED);
INTERMEDIATE_ORIGINAL_DIR_SUFFIX =
HiveConf.getVar(conf, ConfVars.METASTORE_INT_ORIGINAL);
INTERMEDIATE_EXTRACTED_DIR_SUFFIX =
HiveConf.getVar(conf, ConfVars.METASTORE_INT_EXTRACTED);
}
@Override
public int execute(DriverContext driverContext) {
// Create the db
Hive db;
try {
db = Hive.get(conf);
CreateDatabaseDesc createDatabaseDesc = work.getCreateDatabaseDesc();
if (null != createDatabaseDesc) {
return createDatabase(db, createDatabaseDesc);
}
DropDatabaseDesc dropDatabaseDesc = work.getDropDatabaseDesc();
if (dropDatabaseDesc != null) {
return dropDatabase(db, dropDatabaseDesc);
}
LockDatabaseDesc lockDatabaseDesc = work.getLockDatabaseDesc();
if (lockDatabaseDesc != null) {
return lockDatabase(lockDatabaseDesc);
}
UnlockDatabaseDesc unlockDatabaseDesc = work.getUnlockDatabaseDesc();
if (unlockDatabaseDesc != null) {
return unlockDatabase(unlockDatabaseDesc);
}
SwitchDatabaseDesc switchDatabaseDesc = work.getSwitchDatabaseDesc();
if (switchDatabaseDesc != null) {
return switchDatabase(db, switchDatabaseDesc);
}
DescDatabaseDesc descDatabaseDesc = work.getDescDatabaseDesc();
if (descDatabaseDesc != null) {
return descDatabase(descDatabaseDesc);
}
AlterDatabaseDesc alterDatabaseDesc = work.getAlterDatabaseDesc();
if (alterDatabaseDesc != null) {
return alterDatabase(alterDatabaseDesc);
}
CreateTableDesc crtTbl = work.getCreateTblDesc();
if (crtTbl != null) {
return createTable(db, crtTbl);
}
CreateIndexDesc crtIndex = work.getCreateIndexDesc();
if (crtIndex != null) {
return createIndex(db, crtIndex);
}
AlterIndexDesc alterIndex = work.getAlterIndexDesc();
if (alterIndex != null) {
return alterIndex(db, alterIndex);
}
DropIndexDesc dropIdx = work.getDropIdxDesc();
if (dropIdx != null) {
return dropIndex(db, dropIdx);
}
CreateTableLikeDesc crtTblLike = work.getCreateTblLikeDesc();
if (crtTblLike != null) {
return createTableLike(db, crtTblLike);
}
DropTableDesc dropTbl = work.getDropTblDesc();
if (dropTbl != null) {
dropTableOrPartitions(db, dropTbl);
return 0;
}
AlterTableDesc alterTbl = work.getAlterTblDesc();
if (alterTbl != null) {
return alterTable(db, alterTbl);
}
CreateViewDesc crtView = work.getCreateViewDesc();
if (crtView != null) {
return createView(db, crtView);
}
AddPartitionDesc addPartitionDesc = work.getAddPartitionDesc();
if (addPartitionDesc != null) {
return addPartitions(db, addPartitionDesc);
}
RenamePartitionDesc renamePartitionDesc = work.getRenamePartitionDesc();
if (renamePartitionDesc != null) {
return renamePartition(db, renamePartitionDesc);
}
AlterTableSimpleDesc simpleDesc = work.getAlterTblSimpleDesc();
if (simpleDesc != null) {
if (simpleDesc.getType() == AlterTableTypes.TOUCH) {
return touch(db, simpleDesc);
} else if (simpleDesc.getType() == AlterTableTypes.ARCHIVE) {
return archive(db, simpleDesc, driverContext);
} else if (simpleDesc.getType() == AlterTableTypes.UNARCHIVE) {
return unarchive(db, simpleDesc);
} else if (simpleDesc.getType() == AlterTableTypes.COMPACT) {
return compact(db, simpleDesc);
}
}
MsckDesc msckDesc = work.getMsckDesc();
if (msckDesc != null) {
return msck(db, msckDesc);
}
DescTableDesc descTbl = work.getDescTblDesc();
if (descTbl != null) {
return describeTable(db, descTbl);
}
DescFunctionDesc descFunc = work.getDescFunctionDesc();
if (descFunc != null) {
return describeFunction(descFunc);
}
ShowDatabasesDesc showDatabases = work.getShowDatabasesDesc();
if (showDatabases != null) {
return showDatabases(db, showDatabases);
}
ShowTablesDesc showTbls = work.getShowTblsDesc();
if (showTbls != null) {
return showTables(db, showTbls);
}
ShowColumnsDesc showCols = work.getShowColumnsDesc();
if (showCols != null) {
return showColumns(db, showCols);
}
ShowTableStatusDesc showTblStatus = work.getShowTblStatusDesc();
if (showTblStatus != null) {
return showTableStatus(db, showTblStatus);
}
ShowTblPropertiesDesc showTblProperties = work.getShowTblPropertiesDesc();
if (showTblProperties != null) {
return showTableProperties(db, showTblProperties);
}
ShowFunctionsDesc showFuncs = work.getShowFuncsDesc();
if (showFuncs != null) {
return showFunctions(showFuncs);
}
ShowLocksDesc showLocks = work.getShowLocksDesc();
if (showLocks != null) {
return showLocks(showLocks);
}
ShowCompactionsDesc compactionsDesc = work.getShowCompactionsDesc();
if (compactionsDesc != null) {
return showCompactions(compactionsDesc);
}
ShowTxnsDesc txnsDesc = work.getShowTxnsDesc();
if (txnsDesc != null) {
return showTxns(txnsDesc);
}
LockTableDesc lockTbl = work.getLockTblDesc();
if (lockTbl != null) {
return lockTable(lockTbl);
}
UnlockTableDesc unlockTbl = work.getUnlockTblDesc();
if (unlockTbl != null) {
return unlockTable(unlockTbl);
}
ShowPartitionsDesc showParts = work.getShowPartsDesc();
if (showParts != null) {
return showPartitions(db, showParts);
}
ShowCreateTableDesc showCreateTbl = work.getShowCreateTblDesc();
if (showCreateTbl != null) {
return showCreateTable(db, showCreateTbl);
}
ShowConfDesc showConf = work.getShowConfDesc();
if (showConf != null) {
return showConf(db, showConf);
}
RoleDDLDesc roleDDLDesc = work.getRoleDDLDesc();
if (roleDDLDesc != null) {
return roleDDL(roleDDLDesc);
}
GrantDesc grantDesc = work.getGrantDesc();
if (grantDesc != null) {
return grantOrRevokePrivileges(grantDesc.getPrincipals(), grantDesc
.getPrivileges(), grantDesc.getPrivilegeSubjectDesc(), grantDesc.getGrantor(),
grantDesc.getGrantorType(), grantDesc.isGrantOption(), true);
}
RevokeDesc revokeDesc = work.getRevokeDesc();
if (revokeDesc != null) {
return grantOrRevokePrivileges(revokeDesc.getPrincipals(), revokeDesc
.getPrivileges(), revokeDesc.getPrivilegeSubjectDesc(), null, null,
revokeDesc.isGrantOption(), false);
}
ShowGrantDesc showGrantDesc = work.getShowGrantDesc();
if (showGrantDesc != null) {
return showGrants(showGrantDesc);
}
GrantRevokeRoleDDL grantOrRevokeRoleDDL = work.getGrantRevokeRoleDDL();
if (grantOrRevokeRoleDDL != null) {
return grantOrRevokeRole(grantOrRevokeRoleDDL);
}
ShowIndexesDesc showIndexes = work.getShowIndexesDesc();
if (showIndexes != null) {
return showIndexes(db, showIndexes);
}
AlterTablePartMergeFilesDesc mergeFilesDesc = work.getMergeFilesDesc();
if (mergeFilesDesc != null) {
return mergeFiles(db, mergeFilesDesc);
}
AlterTableAlterPartDesc alterPartDesc = work.getAlterTableAlterPartDesc();
if(alterPartDesc != null) {
return alterTableAlterPart(db, alterPartDesc);
}
TruncateTableDesc truncateTableDesc = work.getTruncateTblDesc();
if (truncateTableDesc != null) {
return truncateTable(db, truncateTableDesc);
}
AlterTableExchangePartition alterTableExchangePartition =
work.getAlterTableExchangePartition();
if (alterTableExchangePartition != null) {
return exchangeTablePartition(db, alterTableExchangePartition);
}
} catch (Throwable e) {
failed(e);
return 1;
}
assert false;
return 0;
}
private void failed(Throwable e) {
while (e.getCause() != null && e.getClass() == RuntimeException.class) {
e = e.getCause();
}
setException(e);
LOG.error(stringifyException(e));
}
private int showConf(Hive db, ShowConfDesc showConf) throws Exception {
ConfVars conf = HiveConf.getConfVars(showConf.getConfName());
if (conf == null) {
throw new HiveException("invalid configuration name " + showConf.getConfName());
}
String description = conf.getDescription();
String defaultValue = conf.getDefaultValue();
DataOutputStream output = getOutputStream(showConf.getResFile());
try {
if (defaultValue != null) {
output.write(defaultValue.getBytes());
}
output.write(separator);
output.write(conf.typeString().getBytes());
output.write(separator);
if (description != null) {
output.write(description.replaceAll(" *\n *", " ").getBytes());
}
output.write(terminator);
} finally {
output.close();
}
return 0;
}
private DataOutputStream getOutputStream(Path outputFile) throws Exception {
FileSystem fs = outputFile.getFileSystem(conf);
return fs.create(outputFile);
}
/**
* First, make sure the source table/partition is not
* archived/indexes/non-rcfile. If either of these is true, throw an
* exception.
*
* The way how it does the merge is to create a BlockMergeTask from the
* mergeFilesDesc.
*
* @param db
* @param mergeFilesDesc
* @return
* @throws HiveException
*/
private int mergeFiles(Hive db, AlterTablePartMergeFilesDesc mergeFilesDesc)
throws HiveException {
ListBucketingCtx lbCtx = mergeFilesDesc.getLbCtx();
boolean lbatc = lbCtx == null ? false : lbCtx.isSkewedStoredAsDir();
int lbd = lbCtx == null ? 0 : lbCtx.calculateListBucketingLevel();
// merge work only needs input and output.
MergeFileWork mergeWork = new MergeFileWork(mergeFilesDesc.getInputDir(),
mergeFilesDesc.getOutputDir(), mergeFilesDesc.getInputFormatClass().getName());
LinkedHashMap> pathToAliases =
new LinkedHashMap>();
ArrayList inputDirstr = new ArrayList(1);
inputDirstr.add(mergeFilesDesc.getInputDir().toString());
pathToAliases.put(mergeFilesDesc.getInputDir().get(0).toString(), inputDirstr);
mergeWork.setPathToAliases(pathToAliases);
mergeWork.setListBucketingCtx(mergeFilesDesc.getLbCtx());
mergeWork.resolveConcatenateMerge(db.getConf());
mergeWork.setMapperCannotSpanPartns(true);
mergeWork.setSourceTableInputFormat(mergeFilesDesc.getInputFormatClass().getName());
final FileMergeDesc fmd;
if (mergeFilesDesc.getInputFormatClass().equals(RCFileInputFormat.class)) {
fmd = new RCFileMergeDesc();
} else {
// safe to assume else is ORC as semantic analyzer will check for RC/ORC
fmd = new OrcFileMergeDesc();
}
fmd.setDpCtx(null);
fmd.setHasDynamicPartitions(false);
fmd.setListBucketingAlterTableConcatenate(lbatc);
fmd.setListBucketingDepth(lbd);
fmd.setOutputPath(mergeFilesDesc.getOutputDir());
Operator mergeOp = OperatorFactory.get(fmd);
LinkedHashMap> aliasToWork =
new LinkedHashMap>();
aliasToWork.put(mergeFilesDesc.getInputDir().toString(), mergeOp);
mergeWork.setAliasToWork(aliasToWork);
DriverContext driverCxt = new DriverContext();
Task task;
if (conf.getVar(ConfVars.HIVE_EXECUTION_ENGINE).equals("tez")) {
TezWork tezWork = new TezWork(conf.getVar(HiveConf.ConfVars.HIVEQUERYID));
mergeWork.setName("File Merge");
tezWork.add(mergeWork);
task = new TezTask();
task.setWork(tezWork);
} else {
task = new MergeFileTask();
task.setWork(mergeWork);
}
// initialize the task and execute
task.initialize(db.getConf(), getQueryPlan(), driverCxt);
int ret = task.execute(driverCxt);
return ret;
}
private HiveAuthorizer getSessionAuthorizer() {
HiveAuthorizer authorizer = SessionState.get().getAuthorizerV2();
if (authorizer == null) {
authorizer = new HiveV1Authorizer(conf, db);
}
return authorizer;
}
private int grantOrRevokeRole(GrantRevokeRoleDDL grantOrRevokeRoleDDL)
throws HiveException {
HiveAuthorizer authorizer = getSessionAuthorizer();
//convert to the types needed for plugin api
HivePrincipal grantorPrinc = null;
if(grantOrRevokeRoleDDL.getGrantor() != null){
grantorPrinc = new HivePrincipal(grantOrRevokeRoleDDL.getGrantor(),
AuthorizationUtils.getHivePrincipalType(grantOrRevokeRoleDDL.getGrantorType()));
}
List principals =
AuthorizationUtils.getHivePrincipals(grantOrRevokeRoleDDL.getPrincipalDesc());
List roles = grantOrRevokeRoleDDL.getRoles();
boolean grantOption = grantOrRevokeRoleDDL.isGrantOption();
if (grantOrRevokeRoleDDL.getGrant()) {
authorizer.grantRole(principals, roles, grantOption, grantorPrinc);
} else {
authorizer.revokeRole(principals, roles, grantOption, grantorPrinc);
}
return 0;
}
private int showGrants(ShowGrantDesc showGrantDesc) throws HiveException {
HiveAuthorizer authorizer = getSessionAuthorizer();
try {
List privInfos = authorizer.showPrivileges(
AuthorizationUtils.getHivePrincipal(showGrantDesc.getPrincipalDesc()),
AuthorizationUtils.getHivePrivilegeObject(showGrantDesc.getHiveObj()));
boolean testMode = conf.getBoolVar(HiveConf.ConfVars.HIVE_IN_TEST);
writeToFile(writeGrantInfo(privInfos, testMode), showGrantDesc.getResFile());
} catch (IOException e) {
throw new HiveException("Error in show grant statement", e);
}
return 0;
}
private int grantOrRevokePrivileges(List principals,
List privileges, PrivilegeObjectDesc privSubjectDesc,
String grantor, PrincipalType grantorType, boolean grantOption, boolean isGrant)
throws HiveException {
HiveAuthorizer authorizer = getSessionAuthorizer();
//Convert to object types used by the authorization plugin interface
List hivePrincipals = AuthorizationUtils.getHivePrincipals(principals);
List hivePrivileges = AuthorizationUtils.getHivePrivileges(privileges);
HivePrivilegeObject hivePrivObject = AuthorizationUtils.getHivePrivilegeObject(privSubjectDesc);
HivePrincipal grantorPrincipal = new HivePrincipal(
grantor, AuthorizationUtils.getHivePrincipalType(grantorType));
if(isGrant){
authorizer.grantPrivileges(hivePrincipals, hivePrivileges, hivePrivObject,
grantorPrincipal, grantOption);
}else {
authorizer.revokePrivileges(hivePrincipals, hivePrivileges,
hivePrivObject, grantorPrincipal, grantOption);
}
//no exception thrown, so looks good
return 0;
}
private int roleDDL(RoleDDLDesc roleDDLDesc) throws Exception {
HiveAuthorizer authorizer = getSessionAuthorizer();
RoleDDLDesc.RoleOperation operation = roleDDLDesc.getOperation();
//call the appropriate hive authorizer function
switch(operation){
case CREATE_ROLE:
authorizer.createRole(roleDDLDesc.getName(), null);
break;
case DROP_ROLE:
authorizer.dropRole(roleDDLDesc.getName());
break;
case SHOW_ROLE_GRANT:
boolean testMode = conf.getBoolVar(HiveConf.ConfVars.HIVE_IN_TEST);
List roles = authorizer.getRoleGrantInfoForPrincipal(
AuthorizationUtils.getHivePrincipal(roleDDLDesc.getName(), roleDDLDesc.getPrincipalType()));
writeToFile(writeRolesGrantedInfo(roles, testMode), roleDDLDesc.getResFile());
break;
case SHOW_ROLES:
List allRoles = authorizer.getAllRoles();
writeListToFileAfterSort(allRoles, roleDDLDesc.getResFile());
break;
case SHOW_CURRENT_ROLE:
List roleNames = authorizer.getCurrentRoleNames();
writeListToFileAfterSort(roleNames, roleDDLDesc.getResFile());
break;
case SET_ROLE:
authorizer.setCurrentRole(roleDDLDesc.getName());
break;
case SHOW_ROLE_PRINCIPALS:
testMode = conf.getBoolVar(HiveConf.ConfVars.HIVE_IN_TEST);
List roleGrants = authorizer.getPrincipalGrantInfoForRole(roleDDLDesc.getName());
writeToFile(writeHiveRoleGrantInfo(roleGrants, testMode), roleDDLDesc.getResFile());
break;
default:
throw new HiveException("Unkown role operation "
+ operation.getOperationName());
}
return 0;
}
private String writeHiveRoleGrantInfo(List roleGrants, boolean testMode) {
if (roleGrants == null || roleGrants.isEmpty()) {
return "";
}
StringBuilder builder = new StringBuilder();
// sort the list to get sorted (deterministic) output (for ease of testing)
Collections.sort(roleGrants);
for (HiveRoleGrant roleGrant : roleGrants) {
// schema:
// principal_name,principal_type,grant_option,grantor,grantor_type,grant_time
appendNonNull(builder, roleGrant.getPrincipalName(), true);
appendNonNull(builder, roleGrant.getPrincipalType());
appendNonNull(builder, roleGrant.isGrantOption());
appendNonNull(builder, roleGrant.getGrantor());
appendNonNull(builder, roleGrant.getGrantorType());
appendNonNull(builder, testMode ? -1 : roleGrant.getGrantTime() * 1000L);
}
return builder.toString();
}
/**
* Write list of string entries into given file
* @param entries
* @param resFile
* @throws IOException
*/
private void writeListToFileAfterSort(List entries, String resFile) throws IOException {
Collections.sort(entries);
StringBuilder sb = new StringBuilder();
for(String entry : entries){
appendNonNull(sb, entry, true);
}
writeToFile(sb.toString(), resFile);
}
private int alterDatabase(AlterDatabaseDesc alterDbDesc) throws HiveException {
String dbName = alterDbDesc.getDatabaseName();
Database database = db.getDatabase(dbName);
if (database == null) {
throw new HiveException(ErrorMsg.DATABASE_NOT_EXISTS, dbName);
}
switch (alterDbDesc.getAlterType()) {
case ALTER_PROPERTY:
Map newParams = alterDbDesc.getDatabaseProperties();
Map params = database.getParameters();
// if both old and new params are not null, merge them
if (params != null && newParams != null) {
params.putAll(newParams);
database.setParameters(params);
} else {
// if one of them is null, replace the old params with the new one
database.setParameters(newParams);
}
break;
case ALTER_OWNER:
database.setOwnerName(alterDbDesc.getOwnerPrincipal().getName());
database.setOwnerType(alterDbDesc.getOwnerPrincipal().getType());
break;
default:
throw new AssertionError("Unsupported alter database type! : " + alterDbDesc.getAlterType());
}
db.alterDatabase(database.getName(), database);
return 0;
}
private int dropIndex(Hive db, DropIndexDesc dropIdx) throws HiveException {
db.dropIndex(dropIdx.getTableName(), dropIdx.getIndexName(), dropIdx.isThrowException(), true);
return 0;
}
private int createIndex(Hive db, CreateIndexDesc crtIndex) throws HiveException {
if( crtIndex.getSerde() != null) {
validateSerDe(crtIndex.getSerde());
}
String indexTableName = crtIndex.getIndexTableName();
if (!Utilities.isDefaultNameNode(conf)) {
// If location is specified - ensure that it is a full qualified name
makeLocationQualified(crtIndex, indexTableName);
}
db
.createIndex(
crtIndex.getTableName(), crtIndex.getIndexName(), crtIndex.getIndexTypeHandlerClass(),
crtIndex.getIndexedCols(), crtIndex.getIndexTableName(), crtIndex.getDeferredRebuild(),
crtIndex.getInputFormat(), crtIndex.getOutputFormat(), crtIndex.getSerde(),
crtIndex.getStorageHandler(), crtIndex.getLocation(), crtIndex.getIdxProps(), crtIndex.getTblProps(),
crtIndex.getSerdeProps(), crtIndex.getCollItemDelim(), crtIndex.getFieldDelim(), crtIndex.getFieldEscape(),
crtIndex.getLineDelim(), crtIndex.getMapKeyDelim(), crtIndex.getIndexComment()
);
if (HiveUtils.getIndexHandler(conf, crtIndex.getIndexTypeHandlerClass()).usesIndexTable()) {
Table indexTable = db.getTable(indexTableName);
work.getOutputs().add(new WriteEntity(indexTable, WriteEntity.WriteType.DDL_NO_LOCK));
}
return 0;
}
private int alterIndex(Hive db, AlterIndexDesc alterIndex) throws HiveException {
String baseTableName = alterIndex.getBaseTableName();
String indexName = alterIndex.getIndexName();
Index idx = db.getIndex(baseTableName, indexName);
switch(alterIndex.getOp()) {
case ADDPROPS:
idx.getParameters().putAll(alterIndex.getProps());
break;
case UPDATETIMESTAMP:
try {
Map props = new HashMap();
Map, Long> basePartTs = new HashMap, Long>();
Table baseTbl = db.getTable(baseTableName);
if (baseTbl.isPartitioned()) {
List baseParts;
if (alterIndex.getSpec() != null) {
baseParts = db.getPartitions(baseTbl, alterIndex.getSpec());
} else {
baseParts = db.getPartitions(baseTbl);
}
if (baseParts != null) {
for (Partition p : baseParts) {
FileSystem fs = p.getDataLocation().getFileSystem(db.getConf());
FileStatus fss = fs.getFileStatus(p.getDataLocation());
basePartTs.put(p.getSpec(), fss.getModificationTime());
}
}
} else {
FileSystem fs = baseTbl.getPath().getFileSystem(db.getConf());
FileStatus fss = fs.getFileStatus(baseTbl.getPath());
basePartTs.put(null, fss.getModificationTime());
}
for (Map spec : basePartTs.keySet()) {
if (spec != null) {
props.put(spec.toString(), basePartTs.get(spec).toString());
} else {
props.put("base_timestamp", basePartTs.get(null).toString());
}
}
idx.getParameters().putAll(props);
} catch (HiveException e) {
throw new HiveException("ERROR: Failed to update index timestamps");
} catch (IOException e) {
throw new HiveException("ERROR: Failed to look up timestamps on filesystem");
}
break;
default:
console.printError("Unsupported Alter commnad");
return 1;
}
// set last modified by properties
if (!updateModifiedParameters(idx.getParameters(), conf)) {
return 1;
}
try {
db.alterIndex(baseTableName, indexName, idx);
} catch (InvalidOperationException e) {
console.printError("Invalid alter operation: " + e.getMessage());
LOG.info("alter index: " + stringifyException(e));
return 1;
} catch (HiveException e) {
console.printError("Invalid alter operation: " + e.getMessage());
return 1;
}
return 0;
}
/**
* Add a partitions to a table.
*
* @param db
* Database to add the partition to.
* @param addPartitionDesc
* Add these partitions.
* @return Returns 0 when execution succeeds and above 0 if it fails.
* @throws HiveException
*/
private int addPartitions(Hive db, AddPartitionDesc addPartitionDesc) throws HiveException {
List parts = db.createPartitions(addPartitionDesc);
for (Partition part : parts) {
work.getOutputs().add(new WriteEntity(part, WriteEntity.WriteType.INSERT));
}
return 0;
}
/**
* Rename a partition in a table
*
* @param db
* Database to rename the partition.
* @param renamePartitionDesc
* rename old Partition to new one.
* @return Returns 0 when execution succeeds and above 0 if it fails.
* @throws HiveException
*/
private int renamePartition(Hive db, RenamePartitionDesc renamePartitionDesc) throws HiveException {
Table tbl = db.getTable(renamePartitionDesc.getTableName());
LinkedHashMap oldPartSpec = renamePartitionDesc.getOldPartSpec();
Partition oldPart = db.getPartition(tbl, oldPartSpec, false);
if (oldPart == null) {
String partName = FileUtils.makePartName(new ArrayList(oldPartSpec.keySet()),
new ArrayList(oldPartSpec.values()));
throw new HiveException("Rename partition: source partition [" + partName
+ "] does not exist.");
}
Partition part = db.getPartition(tbl, oldPartSpec, false);
part.setValues(renamePartitionDesc.getNewPartSpec());
db.renamePartition(tbl, oldPartSpec, part);
Partition newPart = db
.getPartition(tbl, renamePartitionDesc.getNewPartSpec(), false);
work.getInputs().add(new ReadEntity(oldPart));
// We've already obtained a lock on the table, don't lock the partition too
work.getOutputs().add(new WriteEntity(newPart, WriteEntity.WriteType.DDL_NO_LOCK));
return 0;
}
/**
* Alter partition column type in a table
*
* @param db
* Database to rename the partition.
* @param alterPartitionDesc
* change partition column type.
* @return Returns 0 when execution succeeds and above 0 if it fails.
* @throws HiveException
*/
private int alterTableAlterPart(Hive db, AlterTableAlterPartDesc alterPartitionDesc)
throws HiveException {
Table tbl = db.getTable(alterPartitionDesc.getTableName(), true);
String tabName = alterPartitionDesc.getTableName();
// This is checked by DDLSemanticAnalyzer
assert(tbl.isPartitioned());
List newPartitionKeys = new ArrayList();
//Check if the existing partition values can be type casted to the new column type
// with a non null value before trying to alter the partition column type.
try {
Set partitions = db.getAllPartitionsOf(tbl);
int colIndex = -1;
for(FieldSchema col : tbl.getTTable().getPartitionKeys()) {
colIndex++;
if (col.getName().compareTo(alterPartitionDesc.getPartKeySpec().getName()) == 0) {
break;
}
}
if (colIndex == -1 || colIndex == tbl.getTTable().getPartitionKeys().size()) {
throw new HiveException("Cannot find partition column " +
alterPartitionDesc.getPartKeySpec().getName());
}
TypeInfo expectedType =
TypeInfoUtils.getTypeInfoFromTypeString(alterPartitionDesc.getPartKeySpec().getType());
ObjectInspector outputOI =
TypeInfoUtils.getStandardWritableObjectInspectorFromTypeInfo(expectedType);
Converter converter = ObjectInspectorConverters.getConverter(
PrimitiveObjectInspectorFactory.javaStringObjectInspector, outputOI);
// For all the existing partitions, check if the value can be type casted to a non-null object
for(Partition part : partitions) {
if (part.getName().equals(conf.getVar(HiveConf.ConfVars.DEFAULTPARTITIONNAME))) {
continue;
}
try {
String value = part.getValues().get(colIndex);
Object convertedValue =
converter.convert(value);
if (convertedValue == null) {
throw new HiveException(" Converting from " + TypeInfoFactory.stringTypeInfo + " to " +
expectedType + " for value : " + value + " resulted in NULL object");
}
} catch (Exception e) {
throw new HiveException("Exception while converting " +
TypeInfoFactory.stringTypeInfo + " to " +
expectedType + " for value : " + part.getValues().get(colIndex));
}
}
} catch(Exception e) {
throw new HiveException(
"Exception while checking type conversion of existing partition values to " +
alterPartitionDesc.getPartKeySpec() + " : " + e.getMessage());
}
for(FieldSchema col : tbl.getTTable().getPartitionKeys()) {
if (col.getName().compareTo(alterPartitionDesc.getPartKeySpec().getName()) == 0) {
newPartitionKeys.add(alterPartitionDesc.getPartKeySpec());
} else {
newPartitionKeys.add(col);
}
}
tbl.getTTable().setPartitionKeys(newPartitionKeys);
try {
db.alterTable(tabName, tbl);
} catch (InvalidOperationException e) {
throw new HiveException(e, ErrorMsg.GENERIC_ERROR, "Unable to alter " + tabName);
}
work.getInputs().add(new ReadEntity(tbl));
// We've already locked the table as the input, don't relock it as the output.
work.getOutputs().add(new WriteEntity(tbl, WriteEntity.WriteType.DDL_NO_LOCK));
return 0;
}
/**
* Rewrite the partition's metadata and force the pre/post execute hooks to
* be fired.
*
* @param db
* @param touchDesc
* @return
* @throws HiveException
*/
private int touch(Hive db, AlterTableSimpleDesc touchDesc)
throws HiveException {
Table tbl = db.getTable(touchDesc.getTableName());
if (touchDesc.getPartSpec() == null) {
try {
db.alterTable(touchDesc.getTableName(), tbl);
} catch (InvalidOperationException e) {
throw new HiveException("Uable to update table");
}
work.getInputs().add(new ReadEntity(tbl));
work.getOutputs().add(new WriteEntity(tbl, WriteEntity.WriteType.DDL_NO_LOCK));
} else {
Partition part = db.getPartition(tbl, touchDesc.getPartSpec(), false);
if (part == null) {
throw new HiveException("Specified partition does not exist");
}
try {
db.alterPartition(touchDesc.getTableName(), part);
} catch (InvalidOperationException e) {
throw new HiveException(e);
}
work.getInputs().add(new ReadEntity(part));
work.getOutputs().add(new WriteEntity(part, WriteEntity.WriteType.DDL_NO_LOCK));
}
return 0;
}
/**
* Sets archiving flag locally; it has to be pushed into metastore
* @param p partition to set flag
* @param state desired state of IS_ARCHIVED flag
* @param level desired level for state == true, anything for false
*/
private void setIsArchived(Partition p, boolean state, int level) {
Map params = p.getParameters();
if (state) {
params.put(org.apache.hadoop.hive.metastore.api.hive_metastoreConstants.IS_ARCHIVED,
"true");
params.put(ArchiveUtils.ARCHIVING_LEVEL, Integer
.toString(level));
} else {
params.remove(org.apache.hadoop.hive.metastore.api.hive_metastoreConstants.IS_ARCHIVED);
params.remove(ArchiveUtils.ARCHIVING_LEVEL);
}
}
/**
* Returns original partition of archived partition, null for unarchived one
*/
private String getOriginalLocation(Partition p) {
Map params = p.getParameters();
return params.get(
org.apache.hadoop.hive.metastore.api.hive_metastoreConstants.ORIGINAL_LOCATION);
}
/**
* Sets original location of partition which is to be archived
*/
private void setOriginalLocation(Partition p, String loc) {
Map params = p.getParameters();
if (loc == null) {
params.remove(org.apache.hadoop.hive.metastore.api.hive_metastoreConstants.ORIGINAL_LOCATION);
} else {
params.put(org.apache.hadoop.hive.metastore.api.hive_metastoreConstants.ORIGINAL_LOCATION, loc);
}
}
/**
* Sets the appropriate attributes in the supplied Partition object to mark
* it as archived. Note that the metastore is not touched - a separate
* call to alter_partition is needed.
*
* @param p - the partition object to modify
* @param harPath - new location of partition (har schema URI)
*/
private void setArchived(Partition p, Path harPath, int level) {
assert(ArchiveUtils.isArchived(p) == false);
setIsArchived(p, true, level);
setOriginalLocation(p, p.getLocation());
p.setLocation(harPath.toString());
}
/**
* Sets the appropriate attributes in the supplied Partition object to mark
* it as not archived. Note that the metastore is not touched - a separate
* call to alter_partition is needed.
*
* @param p - the partition to modify
*/
private void setUnArchived(Partition p) {
assert(ArchiveUtils.isArchived(p) == true);
String parentDir = getOriginalLocation(p);
setIsArchived(p, false, 0);
setOriginalLocation(p, null);
assert(parentDir != null);
p.setLocation(parentDir);
}
private boolean pathExists(Path p) throws HiveException {
try {
FileSystem fs = p.getFileSystem(conf);
return fs.exists(p);
} catch (IOException e) {
throw new HiveException(e);
}
}
private void moveDir(FileSystem fs, Path from, Path to) throws HiveException {
try {
if (!fs.rename(from, to)) {
throw new HiveException("Moving " + from + " to " + to + " failed!");
}
} catch (IOException e) {
throw new HiveException(e);
}
}
private void deleteDir(Path dir) throws HiveException {
try {
Warehouse wh = new Warehouse(conf);
wh.deleteDir(dir, true);
} catch (MetaException e) {
throw new HiveException(e);
}
}
/**
* Checks in partition is in custom (not-standard) location.
* @param tbl - table in which partition is
* @param p - partition
* @return true if partition location is custom, false if it is standard
*/
boolean partitionInCustomLocation(Table tbl, Partition p)
throws HiveException {
String subdir = null;
try {
subdir = Warehouse.makePartName(tbl.getPartCols(), p.getValues());
} catch (MetaException e) {
throw new HiveException("Unable to get partition's directory", e);
}
Path tableDir = tbl.getDataLocation();
if(tableDir == null) {
throw new HiveException("Table has no location set");
}
String standardLocation = (new Path(tableDir, subdir)).toString();
if(ArchiveUtils.isArchived(p)) {
return !getOriginalLocation(p).equals(standardLocation);
} else {
return !p.getLocation().equals(standardLocation);
}
}
private int archive(Hive db, AlterTableSimpleDesc simpleDesc,
DriverContext driverContext)
throws HiveException {
Table tbl = db.getTable(simpleDesc.getTableName());
if (tbl.getTableType() != TableType.MANAGED_TABLE) {
throw new HiveException("ARCHIVE can only be performed on managed tables");
}
Map partSpec = simpleDesc.getPartSpec();
PartSpecInfo partSpecInfo = PartSpecInfo.create(tbl, partSpec);
List partitions = db.getPartitions(tbl, partSpec);
Path originalDir = null;
// when we have partial partitions specification we must assume partitions
// lie in standard place - if they were in custom locations putting
// them into one archive would involve mass amount of copying
// in full partition specification case we allow custom locations
// to keep backward compatibility
if (partitions.isEmpty()) {
throw new HiveException("No partition matches the specification");
} else if(partSpecInfo.values.size() != tbl.getPartCols().size()) {
// for partial specifications we need partitions to follow the scheme
for(Partition p: partitions){
if(partitionInCustomLocation(tbl, p)) {
String message = String.format("ARCHIVE cannot run for partition " +
"groups with custom locations like %s", p.getLocation());
throw new HiveException(message);
}
}
originalDir = partSpecInfo.createPath(tbl);
} else {
Partition p = partitions.get(0);
// partition can be archived if during recovery
if(ArchiveUtils.isArchived(p)) {
originalDir = new Path(getOriginalLocation(p));
} else {
originalDir = p.getDataLocation();
}
}
Path intermediateArchivedDir = new Path(originalDir.getParent(),
originalDir.getName() + INTERMEDIATE_ARCHIVED_DIR_SUFFIX);
Path intermediateOriginalDir = new Path(originalDir.getParent(),
originalDir.getName() + INTERMEDIATE_ORIGINAL_DIR_SUFFIX);
console.printInfo("intermediate.archived is " + intermediateArchivedDir.toString());
console.printInfo("intermediate.original is " + intermediateOriginalDir.toString());
String archiveName = "data.har";
FileSystem fs = null;
try {
fs = originalDir.getFileSystem(conf);
} catch (IOException e) {
throw new HiveException(e);
}
URI archiveUri = (new Path(originalDir, archiveName)).toUri();
URI originalUri = ArchiveUtils.addSlash(originalDir.toUri());
ArchiveUtils.HarPathHelper harHelper = new ArchiveUtils.HarPathHelper(
conf, archiveUri, originalUri);
// we checked if partitions matching specification are marked as archived
// in the metadata; if they are and their levels are the same as we would
// set it later it means previous run failed and we have to do the recovery;
// if they are different, we throw an error
for(Partition p: partitions) {
if(ArchiveUtils.isArchived(p)) {
if(ArchiveUtils.getArchivingLevel(p) != partSpecInfo.values.size()) {
String name = ArchiveUtils.getPartialName(p, ArchiveUtils.getArchivingLevel(p));
String m = String.format("Conflict with existing archive %s", name);
throw new HiveException(m);
} else {
throw new HiveException("Partition(s) already archived");
}
}
}
boolean recovery = false;
if (pathExists(intermediateArchivedDir)
|| pathExists(intermediateOriginalDir)) {
recovery = true;
console.printInfo("Starting recovery after failed ARCHIVE");
}
// The following steps seem roundabout, but they are meant to aid in
// recovery if a failure occurs and to keep a consistent state in the FS
// Steps:
// 1. Create the archive in a temporary folder
// 2. Move the archive dir to an intermediate dir that is in at the same
// dir as the original partition dir. Call the new dir
// intermediate-archive.
// 3. Rename the original partition dir to an intermediate dir. Call the
// renamed dir intermediate-original
// 4. Rename intermediate-archive to the original partition dir
// 5. Change the metadata
// 6. Delete the original partition files in intermediate-original
// The original partition files are deleted after the metadata change
// because the presence of those files are used to indicate whether
// the original partition directory contains archived or unarchived files.
// Create an archived version of the partition in a directory ending in
// ARCHIVE_INTERMEDIATE_DIR_SUFFIX that's the same level as the partition,
// if it does not already exist. If it does exist, we assume the dir is good
// to use as the move operation that created it is atomic.
if (!pathExists(intermediateArchivedDir) &&
!pathExists(intermediateOriginalDir)) {
// First create the archive in a tmp dir so that if the job fails, the
// bad files don't pollute the filesystem
Path tmpPath = new Path(driverContext.getCtx()
.getExternalTmpPath(originalDir), "partlevel");
console.printInfo("Creating " + archiveName +
" for " + originalDir.toString());
console.printInfo("in " + tmpPath);
console.printInfo("Please wait... (this may take a while)");
// Create the Hadoop archive
int ret=0;
try {
int maxJobNameLen = conf.getIntVar(HiveConf.ConfVars.HIVEJOBNAMELENGTH);
String jobname = String.format("Archiving %s@%s",
tbl.getTableName(), partSpecInfo.getName());
jobname = Utilities.abbreviate(jobname, maxJobNameLen - 6);
conf.setVar(HiveConf.ConfVars.HADOOPJOBNAME, jobname);
HadoopArchives har = new HadoopArchives(conf);
List args = new ArrayList();
args.add("-archiveName");
args.add(archiveName);
args.add("-p");
args.add(originalDir.toString());
args.add(tmpPath.toString());
ret = ToolRunner.run(har, args.toArray(new String[0]));;
} catch (Exception e) {
throw new HiveException(e);
}
if (ret != 0) {
throw new HiveException("Error while creating HAR");
}
// Move from the tmp dir to an intermediate directory, in the same level as
// the partition directory. e.g. .../hr=12-intermediate-archived
try {
console.printInfo("Moving " + tmpPath + " to " + intermediateArchivedDir);
if (pathExists(intermediateArchivedDir)) {
throw new HiveException("The intermediate archive directory already exists.");
}
fs.rename(tmpPath, intermediateArchivedDir);
} catch (IOException e) {
throw new HiveException("Error while moving tmp directory");
}
} else {
if (pathExists(intermediateArchivedDir)) {
console.printInfo("Intermediate archive directory " + intermediateArchivedDir +
" already exists. Assuming it contains an archived version of the partition");
}
}
// If we get to here, we know that we've archived the partition files, but
// they may be in the original partition location, or in the intermediate
// original dir.
// Move the original parent directory to the intermediate original directory
// if the move hasn't been made already
if (!pathExists(intermediateOriginalDir)) {
console.printInfo("Moving " + originalDir + " to " +
intermediateOriginalDir);
moveDir(fs, originalDir, intermediateOriginalDir);
} else {
console.printInfo(intermediateOriginalDir + " already exists. " +
"Assuming it contains the original files in the partition");
}
// If there's a failure from here to when the metadata is updated,
// there will be no data in the partition, or an error while trying to read
// the partition (if the archive files have been moved to the original
// partition directory.) But re-running the archive command will allow
// recovery
// Move the intermediate archived directory to the original parent directory
if (!pathExists(originalDir)) {
console.printInfo("Moving " + intermediateArchivedDir + " to " +
originalDir);
moveDir(fs, intermediateArchivedDir, originalDir);
} else {
console.printInfo(originalDir + " already exists. " +
"Assuming it contains the archived version of the partition");
}
// Record this change in the metastore
try {
for(Partition p: partitions) {
URI originalPartitionUri = ArchiveUtils.addSlash(p.getDataLocation().toUri());
URI harPartitionDir = harHelper.getHarUri(originalPartitionUri);
StringBuilder authority = new StringBuilder();
if(harPartitionDir.getUserInfo() != null) {
authority.append(harPartitionDir.getUserInfo()).append("@");
}
authority.append(harPartitionDir.getHost());
if(harPartitionDir.getPort() != -1) {
authority.append(":").append(harPartitionDir.getPort());
}
Path harPath = new Path(harPartitionDir.getScheme(),
authority.toString(),
harPartitionDir.getPath()); // make in Path to ensure no slash at the end
setArchived(p, harPath, partSpecInfo.values.size());
db.alterPartition(simpleDesc.getTableName(), p);
}
} catch (Exception e) {
throw new HiveException("Unable to change the partition info for HAR", e);
}
// If a failure occurs here, the directory containing the original files
// will not be deleted. The user will run ARCHIVE again to clear this up
if(pathExists(intermediateOriginalDir)) {
deleteDir(intermediateOriginalDir);
}
if(recovery) {
console.printInfo("Recovery after ARCHIVE succeeded");
}
return 0;
}
private int unarchive(Hive db, AlterTableSimpleDesc simpleDesc)
throws HiveException, URISyntaxException {
Table tbl = db.getTable(simpleDesc.getTableName());
// Means user specified a table, not a partition
if (simpleDesc.getPartSpec() == null) {
throw new HiveException("UNARCHIVE is for partitions only");
}
if (tbl.getTableType() != TableType.MANAGED_TABLE) {
throw new HiveException("UNARCHIVE can only be performed on managed tables");
}
Map partSpec = simpleDesc.getPartSpec();
PartSpecInfo partSpecInfo = PartSpecInfo.create(tbl, partSpec);
List partitions = db.getPartitions(tbl, partSpec);
int partSpecLevel = partSpec.size();
Path originalDir = null;
// when we have partial partitions specification we must assume partitions
// lie in standard place - if they were in custom locations putting
// them into one archive would involve mass amount of copying
// in full partition specification case we allow custom locations
// to keep backward compatibility
if (partitions.isEmpty()) {
throw new HiveException("No partition matches the specification");
} else if(partSpecInfo.values.size() != tbl.getPartCols().size()) {
// for partial specifications we need partitions to follow the scheme
for(Partition p: partitions){
if(partitionInCustomLocation(tbl, p)) {
String message = String.format("UNARCHIVE cannot run for partition " +
"groups with custom locations like %s", p.getLocation());
throw new HiveException(message);
}
}
originalDir = partSpecInfo.createPath(tbl);
} else {
Partition p = partitions.get(0);
if(ArchiveUtils.isArchived(p)) {
originalDir = new Path(getOriginalLocation(p));
} else {
originalDir = new Path(p.getLocation());
}
}
URI originalUri = ArchiveUtils.addSlash(originalDir.toUri());
Path intermediateArchivedDir = new Path(originalDir.getParent(),
originalDir.getName() + INTERMEDIATE_ARCHIVED_DIR_SUFFIX);
Path intermediateExtractedDir = new Path(originalDir.getParent(),
originalDir.getName() + INTERMEDIATE_EXTRACTED_DIR_SUFFIX);
boolean recovery = false;
if(pathExists(intermediateArchivedDir) || pathExists(intermediateExtractedDir)) {
recovery = true;
console.printInfo("Starting recovery after failed UNARCHIVE");
}
for(Partition p: partitions) {
checkArchiveProperty(partSpecLevel, recovery, p);
}
String archiveName = "data.har";
FileSystem fs = null;
try {
fs = originalDir.getFileSystem(conf);
} catch (IOException e) {
throw new HiveException(e);
}
// assume the archive is in the original dir, check if it exists
Path archivePath = new Path(originalDir, archiveName);
URI archiveUri = archivePath.toUri();
ArchiveUtils.HarPathHelper harHelper = new ArchiveUtils.HarPathHelper(conf,
archiveUri, originalUri);
URI sourceUri = harHelper.getHarUri(originalUri);
Path sourceDir = new Path(sourceUri.getScheme(), sourceUri.getAuthority(), sourceUri.getPath());
if(!pathExists(intermediateArchivedDir) && !pathExists(archivePath)) {
throw new HiveException("Haven't found any archive where it should be");
}
Path tmpPath = driverContext.getCtx().getExternalTmpPath(originalDir);
try {
fs = tmpPath.getFileSystem(conf);
} catch (IOException e) {
throw new HiveException(e);
}
// Clarification of terms:
// - The originalDir directory represents the original directory of the
// partitions' files. They now contain an archived version of those files
// eg. hdfs:/warehouse/myTable/ds=1/
// - The source directory is the directory containing all the files that
// should be in the partitions. e.g. har:/warehouse/myTable/ds=1/myTable.har/
// Note the har:/ scheme
// Steps:
// 1. Extract the archive in a temporary folder
// 2. Move the archive dir to an intermediate dir that is in at the same
// dir as originalLocation. Call the new dir intermediate-extracted.
// 3. Rename the original partitions dir to an intermediate dir. Call the
// renamed dir intermediate-archive
// 4. Rename intermediate-extracted to the original partitions dir
// 5. Change the metadata
// 6. Delete the archived partitions files in intermediate-archive
if (!pathExists(intermediateExtractedDir) &&
!pathExists(intermediateArchivedDir)) {
try {
// Copy the files out of the archive into the temporary directory
String copySource = sourceDir.toString();
String copyDest = tmpPath.toString();
List args = new ArrayList();
args.add("-cp");
args.add(copySource);
args.add(copyDest);
console.printInfo("Copying " + copySource + " to " + copyDest);
FileSystem srcFs = FileSystem.get(sourceDir.toUri(), conf);
srcFs.initialize(sourceDir.toUri(), conf);
FsShell fss = new FsShell(conf);
int ret = 0;
try {
ret = ToolRunner.run(fss, args.toArray(new String[0]));
} catch (Exception e) {
e.printStackTrace();
throw new HiveException(e);
}
if (ret != 0) {
throw new HiveException("Error while copying files from archive, return code=" + ret);
} else {
console.printInfo("Succefully Copied " + copySource + " to " + copyDest);
}
console.printInfo("Moving " + tmpPath + " to " + intermediateExtractedDir);
if (fs.exists(intermediateExtractedDir)) {
throw new HiveException("Invalid state: the intermediate extracted " +
"directory already exists.");
}
fs.rename(tmpPath, intermediateExtractedDir);
} catch (Exception e) {
throw new HiveException(e);
}
}
// At this point, we know that the extracted files are in the intermediate
// extracted dir, or in the the original directory.
if (!pathExists(intermediateArchivedDir)) {
try {
console.printInfo("Moving " + originalDir + " to " + intermediateArchivedDir);
fs.rename(originalDir, intermediateArchivedDir);
} catch (IOException e) {
throw new HiveException(e);
}
} else {
console.printInfo(intermediateArchivedDir + " already exists. " +
"Assuming it contains the archived version of the partition");
}
// If there is a failure from here to until when the metadata is changed,
// the partition will be empty or throw errors on read.
// If the original location exists here, then it must be the extracted files
// because in the previous step, we moved the previous original location
// (containing the archived version of the files) to intermediateArchiveDir
if (!pathExists(originalDir)) {
try {
console.printInfo("Moving " + intermediateExtractedDir + " to " + originalDir);
fs.rename(intermediateExtractedDir, originalDir);
} catch (IOException e) {
throw new HiveException(e);
}
} else {
console.printInfo(originalDir + " already exists. " +
"Assuming it contains the extracted files in the partition");
}
for(Partition p: partitions) {
setUnArchived(p);
try {
db.alterPartition(simpleDesc.getTableName(), p);
} catch (InvalidOperationException e) {
throw new HiveException(e);
}
}
// If a failure happens here, the intermediate archive files won't be
// deleted. The user will need to call unarchive again to clear those up.
if(pathExists(intermediateArchivedDir)) {
deleteDir(intermediateArchivedDir);
}
if(recovery) {
console.printInfo("Recovery after UNARCHIVE succeeded");
}
return 0;
}
private void checkArchiveProperty(int partSpecLevel,
boolean recovery, Partition p) throws HiveException {
if (!ArchiveUtils.isArchived(p) && !recovery) {
throw new HiveException("Partition " + p.getName()
+ " is not archived.");
}
int archiveLevel = ArchiveUtils.getArchivingLevel(p);
if (partSpecLevel > archiveLevel) {
throw new HiveException("Partition " + p.getName()
+ " is archived at level " + archiveLevel
+ ", and given partspec only has " + partSpecLevel
+ " specs.");
}
}
private void msckAddPartitionsOneByOne(Hive db, Table table,
List partsNotInMs, List repairOutput) {
for (CheckResult.PartitionResult part : partsNotInMs) {
try {
db.createPartition(table, Warehouse.makeSpecFromName(part.getPartitionName()));
repairOutput.add("Repair: Added partition to metastore "
+ table.getTableName() + ':' + part.getPartitionName());
} catch (Exception e) {
LOG.warn("Repair error, could not add partition to metastore: ", e);
}
}
}
private int compact(Hive db, AlterTableSimpleDesc desc) throws HiveException {
Table tbl = db.getTable(desc.getTableName());
String partName = null;
if (desc.getPartSpec() == null) {
// Compaction can only be done on the whole table if the table is non-partitioned.
if (tbl.isPartitioned()) {
throw new HiveException(ErrorMsg.NO_COMPACTION_PARTITION);
}
} else {
Map partSpec = desc.getPartSpec();
List partitions = db.getPartitions(tbl, partSpec);
if (partitions.size() > 1) {
throw new HiveException(ErrorMsg.TOO_MANY_COMPACTION_PARTITIONS);
} else if (partitions.size() == 0) {
throw new HiveException(ErrorMsg.INVALID_PARTITION_SPEC);
}
partName = partitions.get(0).getName();
}
db.compact(tbl.getDbName(), tbl.getTableName(), partName, desc.getCompactionType());
console.printInfo("Compaction enqueued.");
return 0;
}
/**
* MetastoreCheck, see if the data in the metastore matches what is on the
* dfs. Current version checks for tables and partitions that are either
* missing on disk on in the metastore.
*
* @param db
* The database in question.
* @param msckDesc
* Information about the tables and partitions we want to check for.
* @return Returns 0 when execution succeeds and above 0 if it fails.
*/
private int msck(Hive db, MsckDesc msckDesc) {
CheckResult result = new CheckResult();
List repairOutput = new ArrayList();
try {
HiveMetaStoreChecker checker = new HiveMetaStoreChecker(db);
String[] names = Utilities.getDbTableName(msckDesc.getTableName());
checker.checkMetastore(names[0], names[1], msckDesc.getPartSpecs(), result);
List partsNotInMs = result.getPartitionsNotInMs();
if (msckDesc.isRepairPartitions() && !partsNotInMs.isEmpty()) {
Table table = db.getTable(msckDesc.getTableName());
AddPartitionDesc apd = new AddPartitionDesc(
table.getDbName(), table.getTableName(), false);
try {
for (CheckResult.PartitionResult part : partsNotInMs) {
apd.addPartition(Warehouse.makeSpecFromName(part.getPartitionName()), null);
repairOutput.add("Repair: Added partition to metastore "
+ msckDesc.getTableName() + ':' + part.getPartitionName());
}
db.createPartitions(apd);
} catch (Exception e) {
LOG.info("Could not bulk-add partitions to metastore; trying one by one", e);
repairOutput.clear();
msckAddPartitionsOneByOne(db, table, partsNotInMs, repairOutput);
}
}
} catch (HiveException e) {
LOG.warn("Failed to run metacheck: ", e);
return 1;
} catch (IOException e) {
LOG.warn("Failed to run metacheck: ", e);
return 1;
} finally {
BufferedWriter resultOut = null;
try {
Path resFile = new Path(msckDesc.getResFile());
FileSystem fs = resFile.getFileSystem(conf);
resultOut = new BufferedWriter(new OutputStreamWriter(fs
.create(resFile)));
boolean firstWritten = false;
firstWritten |= writeMsckResult(result.getTablesNotInMs(),
"Tables not in metastore:", resultOut, firstWritten);
firstWritten |= writeMsckResult(result.getTablesNotOnFs(),
"Tables missing on filesystem:", resultOut, firstWritten);
firstWritten |= writeMsckResult(result.getPartitionsNotInMs(),
"Partitions not in metastore:", resultOut, firstWritten);
firstWritten |= writeMsckResult(result.getPartitionsNotOnFs(),
"Partitions missing from filesystem:", resultOut, firstWritten);
for (String rout : repairOutput) {
if (firstWritten) {
resultOut.write(terminator);
} else {
firstWritten = true;
}
resultOut.write(rout);
}
} catch (IOException e) {
LOG.warn("Failed to save metacheck output: ", e);
return 1;
} finally {
if (resultOut != null) {
try {
resultOut.close();
} catch (IOException e) {
LOG.warn("Failed to close output file: ", e);
return 1;
}
}
}
}
return 0;
}
/**
* Write the result of msck to a writer.
*
* @param result
* The result we're going to write
* @param msg
* Message to write.
* @param out
* Writer to write to
* @param wrote
* if any previous call wrote data
* @return true if something was written
* @throws IOException
* In case the writing fails
*/
private boolean writeMsckResult(List result, String msg,
Writer out, boolean wrote) throws IOException {
if (!result.isEmpty()) {
if (wrote) {
out.write(terminator);
}
out.write(msg);
for (Object entry : result) {
out.write(separator);
out.write(entry.toString());
}
return true;
}
return false;
}
/**
* Write a list of partitions to a file.
*
* @param db
* The database in question.
* @param showParts
* These are the partitions we're interested in.
* @return Returns 0 when execution succeeds and above 0 if it fails.
* @throws HiveException
* Throws this exception if an unexpected error occurs.
*/
private int showPartitions(Hive db, ShowPartitionsDesc showParts) throws HiveException {
// get the partitions for the table and populate the output
String tabName = showParts.getTabName();
Table tbl = null;
List parts = null;
tbl = db.getTable(tabName);
if (!tbl.isPartitioned()) {
throw new HiveException(ErrorMsg.TABLE_NOT_PARTITIONED, tabName);
}
if (showParts.getPartSpec() != null) {
parts = db.getPartitionNames(tbl.getDbName(),
tbl.getTableName(), showParts.getPartSpec(), (short) -1);
} else {
parts = db.getPartitionNames(tbl.getDbName(), tbl.getTableName(), (short) -1);
}
// write the results in the file
DataOutputStream outStream = null;
try {
Path resFile = new Path(showParts.getResFile());
FileSystem fs = resFile.getFileSystem(conf);
outStream = fs.create(resFile);
formatter.showTablePartitons(outStream, parts);
outStream.close();
outStream = null;
} catch (Exception e) {
throw new HiveException(e, ErrorMsg.GENERIC_ERROR, "show partitions for table " + tabName);
} finally {
IOUtils.closeStream(outStream);
}
return 0;
}
private static final String[] DELIMITER_PREFIXES = new String[] {
"FIELDS TERMINATED BY",
"COLLECTION ITEMS TERMINATED BY",
"MAP KEYS TERMINATED BY",
"LINES TERMINATED BY",
"NULL DEFINED AS"
};
/**
* Write a statement of how to create a table to a file.
*
* @param db
* The database in question.
* @param showCreateTbl
* This is the table we're interested in.
* @return Returns 0 when execution succeeds and above 0 if it fails.
* @throws HiveException
* Throws this exception if an unexpected error occurs.
*/
private int showCreateTable(Hive db, ShowCreateTableDesc showCreateTbl) throws HiveException {
// get the create table statement for the table and populate the output
final String EXTERNAL = "external";
final String TEMPORARY = "temporary";
final String LIST_COLUMNS = "columns";
final String TBL_COMMENT = "tbl_comment";
final String LIST_PARTITIONS = "partitions";
final String SORT_BUCKET = "sort_bucket";
final String ROW_FORMAT = "row_format";
final String TBL_LOCATION = "tbl_location";
final String TBL_PROPERTIES = "tbl_properties";
boolean needsLocation = true;
StringBuilder createTab_str = new StringBuilder();
String tableName = showCreateTbl.getTableName();
Table tbl = db.getTable(tableName, false);
DataOutputStream outStream = null;
List duplicateProps = new ArrayList();
try {
Path resFile = new Path(showCreateTbl.getResFile());
FileSystem fs = resFile.getFileSystem(conf);
outStream = fs.create(resFile);
needsLocation = doesTableNeedLocation(tbl);
if (tbl.isView()) {
String createTab_stmt = "CREATE VIEW `" + tableName + "` AS " + tbl.getViewExpandedText();
outStream.writeBytes(createTab_stmt.toString());
outStream.close();
outStream = null;
return 0;
}
createTab_str.append("CREATE <" + TEMPORARY + "><" + EXTERNAL + ">TABLE `");
createTab_str.append(tableName + "`(\n");
createTab_str.append("<" + LIST_COLUMNS + ">)\n");
createTab_str.append("<" + TBL_COMMENT + ">\n");
createTab_str.append("<" + LIST_PARTITIONS + ">\n");
createTab_str.append("<" + SORT_BUCKET + ">\n");
createTab_str.append("<" + ROW_FORMAT + ">\n");
if (needsLocation) {
createTab_str.append("LOCATION\n");
createTab_str.append("<" + TBL_LOCATION + ">\n");
}
createTab_str.append("TBLPROPERTIES (\n");
createTab_str.append("<" + TBL_PROPERTIES + ">)\n");
ST createTab_stmt = new ST(createTab_str.toString());
// For cases where the table is temporary
String tbl_temp = "";
if (tbl.isTemporary()) {
duplicateProps.add("TEMPORARY");
tbl_temp = "TEMPORARY ";
}
// For cases where the table is external
String tbl_external = "";
if (tbl.getTableType() == TableType.EXTERNAL_TABLE) {
duplicateProps.add("EXTERNAL");
tbl_external = "EXTERNAL ";
}
// Columns
String tbl_columns = "";
List cols = tbl.getCols();
List columns = new ArrayList();
for (FieldSchema col : cols) {
String columnDesc = " `" + col.getName() + "` " + col.getType();
if (col.getComment() != null) {
columnDesc = columnDesc + " COMMENT '" + escapeHiveCommand(col.getComment()) + "'";
}
columns.add(columnDesc);
}
tbl_columns = StringUtils.join(columns, ", \n");
// Table comment
String tbl_comment = "";
String tabComment = tbl.getProperty("comment");
if (tabComment != null) {
duplicateProps.add("comment");
tbl_comment = "COMMENT '" + escapeHiveCommand(tabComment) + "'";
}
// Partitions
String tbl_partitions = "";
List partKeys = tbl.getPartitionKeys();
if (partKeys.size() > 0) {
tbl_partitions += "PARTITIONED BY ( \n";
List partCols = new ArrayList();
for (FieldSchema partKey : partKeys) {
String partColDesc = " `" + partKey.getName() + "` " + partKey.getType();
if (partKey.getComment() != null) {
partColDesc = partColDesc + " COMMENT '" +
escapeHiveCommand(partKey.getComment()) + "'";
}
partCols.add(partColDesc);
}
tbl_partitions += StringUtils.join(partCols, ", \n");
tbl_partitions += ")";
}
// Clusters (Buckets)
String tbl_sort_bucket = "";
List buckCols = tbl.getBucketCols();
if (buckCols.size() > 0) {
duplicateProps.add("SORTBUCKETCOLSPREFIX");
tbl_sort_bucket += "CLUSTERED BY ( \n ";
tbl_sort_bucket += StringUtils.join(buckCols, ", \n ");
tbl_sort_bucket += ") \n";
List sortCols = tbl.getSortCols();
if (sortCols.size() > 0) {
tbl_sort_bucket += "SORTED BY ( \n";
// Order
List sortKeys = new ArrayList();
for (Order sortCol : sortCols) {
String sortKeyDesc = " " + sortCol.getCol() + " ";
if (sortCol.getOrder() == BaseSemanticAnalyzer.HIVE_COLUMN_ORDER_ASC) {
sortKeyDesc = sortKeyDesc + "ASC";
}
else if (sortCol.getOrder() == BaseSemanticAnalyzer.HIVE_COLUMN_ORDER_DESC) {
sortKeyDesc = sortKeyDesc + "DESC";
}
sortKeys.add(sortKeyDesc);
}
tbl_sort_bucket += StringUtils.join(sortKeys, ", \n");
tbl_sort_bucket += ") \n";
}
tbl_sort_bucket += "INTO " + tbl.getNumBuckets() + " BUCKETS";
}
// Row format (SerDe)
StringBuilder tbl_row_format = new StringBuilder();
StorageDescriptor sd = tbl.getTTable().getSd();
SerDeInfo serdeInfo = sd.getSerdeInfo();
tbl_row_format.append("ROW FORMAT");
if (tbl.getStorageHandler() == null) {
Map serdeParams = serdeInfo.getParameters();
String[] delimiters = new String[] {
serdeParams.remove(serdeConstants.FIELD_DELIM),
serdeParams.remove(serdeConstants.COLLECTION_DELIM),
serdeParams.remove(serdeConstants.MAPKEY_DELIM),
serdeParams.remove(serdeConstants.LINE_DELIM),
serdeParams.remove(serdeConstants.SERIALIZATION_NULL_FORMAT)
};
serdeParams.remove(serdeConstants.SERIALIZATION_FORMAT);
if (containsNonNull(delimiters)) {
// There is a "serialization.format" property by default,
// even with a delimited row format.
// But our result will only cover the following four delimiters.
tbl_row_format.append(" DELIMITED \n");
// Warn:
// If the four delimiters all exist in a CREATE TABLE query,
// this following order needs to be strictly followed,
// or the query will fail with a ParseException.
for (int i = 0; i < DELIMITER_PREFIXES.length; i++) {
if (delimiters[i] != null) {
tbl_row_format.append(" ").append(DELIMITER_PREFIXES[i]).append(" '");
tbl_row_format.append(escapeHiveCommand(StringEscapeUtils.escapeJava(delimiters[i])));
tbl_row_format.append("' \n");
}
}
} else {
tbl_row_format.append(" SERDE \n '" +
escapeHiveCommand(serdeInfo.getSerializationLib()) + "' \n");
}
if (!serdeParams.isEmpty()) {
appendSerdeParams(tbl_row_format, serdeParams).append(" \n");
}
tbl_row_format.append("STORED AS INPUTFORMAT \n '" +
escapeHiveCommand(sd.getInputFormat()) + "' \n");
tbl_row_format.append("OUTPUTFORMAT \n '" +
escapeHiveCommand(sd.getOutputFormat()) + "'");
} else {
duplicateProps.add(org.apache.hadoop.hive.metastore.api.hive_metastoreConstants.META_TABLE_STORAGE);
tbl_row_format.append(" SERDE \n '" +
escapeHiveCommand(serdeInfo.getSerializationLib()) + "' \n");
tbl_row_format.append("STORED BY \n '" + escapeHiveCommand(tbl.getParameters().get(
org.apache.hadoop.hive.metastore.api.hive_metastoreConstants.META_TABLE_STORAGE)) + "' \n");
// SerDe Properties
if (serdeInfo.getParametersSize() > 0) {
appendSerdeParams(tbl_row_format, serdeInfo.getParameters());
}
}
String tbl_location = " '" + escapeHiveCommand(sd.getLocation()) + "'";
// Table properties
String tbl_properties = "";
if (!tbl.getParameters().isEmpty()) {
Map properties = new TreeMap(tbl.getParameters());
List realProps = new ArrayList();
for (String key : properties.keySet()) {
if (properties.get(key) != null && !duplicateProps.contains(key)) {
realProps.add(" '" + key + "'='" +
escapeHiveCommand(StringEscapeUtils.escapeJava(properties.get(key))) + "'");
}
}
tbl_properties += StringUtils.join(realProps, ", \n");
}
createTab_stmt.add(TEMPORARY, tbl_temp);
createTab_stmt.add(EXTERNAL, tbl_external);
createTab_stmt.add(LIST_COLUMNS, tbl_columns);
createTab_stmt.add(TBL_COMMENT, tbl_comment);
createTab_stmt.add(LIST_PARTITIONS, tbl_partitions);
createTab_stmt.add(SORT_BUCKET, tbl_sort_bucket);
createTab_stmt.add(ROW_FORMAT, tbl_row_format);
// Table location should not be printed with hbase backed tables
if (needsLocation) {
createTab_stmt.add(TBL_LOCATION, tbl_location);
}
createTab_stmt.add(TBL_PROPERTIES, tbl_properties);
outStream.writeBytes(createTab_stmt.render());
outStream.close();
outStream = null;
} catch (FileNotFoundException e) {
LOG.info("show create table: " + stringifyException(e));
return 1;
} catch (IOException e) {
LOG.info("show create table: " + stringifyException(e));
return 1;
} catch (Exception e) {
throw new HiveException(e);
} finally {
IOUtils.closeStream(outStream);
}
return 0;
}
private boolean containsNonNull(String[] values) {
for (String value : values) {
if (value != null) {
return true;
}
}
return false;
}
private StringBuilder appendSerdeParams(StringBuilder builder, Map serdeParam) {
serdeParam = new TreeMap(serdeParam);
builder.append("WITH SERDEPROPERTIES ( \n");
List serdeCols = new ArrayList();
for (Entry entry : serdeParam.entrySet()) {
serdeCols.add(" '" + entry.getKey() + "'='"
+ escapeHiveCommand(StringEscapeUtils.escapeJava(entry.getValue())) + "'");
}
builder.append(StringUtils.join(serdeCols, ", \n")).append(')');
return builder;
}
/**
* Write a list of indexes to a file.
*
* @param db
* The database in question.
* @param showIndexes
* These are the indexes we're interested in.
* @return Returns 0 when execution succeeds and above 0 if it fails.
* @throws HiveException
* Throws this exception if an unexpected error occurs.
*/
private int showIndexes(Hive db, ShowIndexesDesc showIndexes) throws HiveException {
// get the indexes for the table and populate the output
String tableName = showIndexes.getTableName();
Table tbl = null;
List indexes = null;
tbl = db.getTable(tableName);
indexes = db.getIndexes(tbl.getDbName(), tbl.getTableName(), (short) -1);
// write the results in the file
DataOutputStream outStream = null;
try {
Path resFile = new Path(showIndexes.getResFile());
FileSystem fs = resFile.getFileSystem(conf);
outStream = fs.create(resFile);
if (showIndexes.isFormatted()) {
// column headers
outStream.writeBytes(MetaDataFormatUtils.getIndexColumnsHeader());
outStream.write(terminator);
outStream.write(terminator);
}
for (Index index : indexes)
{
outStream.writeBytes(MetaDataFormatUtils.getAllColumnsInformation(index));
}
outStream.close();
outStream = null;
} catch (FileNotFoundException e) {
LOG.info("show indexes: " + stringifyException(e));
throw new HiveException(e.toString());
} catch (IOException e) {
LOG.info("show indexes: " + stringifyException(e));
throw new HiveException(e.toString());
} catch (Exception e) {
throw new HiveException(e.toString());
} finally {
IOUtils.closeStream(outStream);
}
return 0;
}
/**
* Write a list of the available databases to a file.
*
* @param showDatabasesDesc
* These are the databases we're interested in.
* @return Returns 0 when execution succeeds and above 0 if it fails.
* @throws HiveException
* Throws this exception if an unexpected error occurs.
*/
private int showDatabases(Hive db, ShowDatabasesDesc showDatabasesDesc) throws HiveException {
// get the databases for the desired pattern - populate the output stream
List databases = null;
if (showDatabasesDesc.getPattern() != null) {
LOG.info("pattern: " + showDatabasesDesc.getPattern());
databases = db.getDatabasesByPattern(showDatabasesDesc.getPattern());
} else {
databases = db.getAllDatabases();
}
LOG.info("results : " + databases.size());
// write the results in the file
DataOutputStream outStream = null;
try {
Path resFile = new Path(showDatabasesDesc.getResFile());
FileSystem fs = resFile.getFileSystem(conf);
outStream = fs.create(resFile);
formatter.showDatabases(outStream, databases);
outStream.close();
outStream = null;
} catch (Exception e) {
throw new HiveException(e, ErrorMsg.GENERIC_ERROR, "show databases");
} finally {
IOUtils.closeStream(outStream);
}
return 0;
}
/**
* Write a list of the tables in the database to a file.
*
* @param db
* The database in question.
* @param showTbls
* These are the tables we're interested in.
* @return Returns 0 when execution succeeds and above 0 if it fails.
* @throws HiveException
* Throws this exception if an unexpected error occurs.
*/
private int showTables(Hive db, ShowTablesDesc showTbls) throws HiveException {
// get the tables for the desired pattern - populate the output stream
List tbls = null;
String dbName = showTbls.getDbName();
if (!db.databaseExists(dbName)) {
throw new HiveException(ErrorMsg.DATABASE_NOT_EXISTS, dbName);
}
if (showTbls.getPattern() != null) {
LOG.info("pattern: " + showTbls.getPattern());
tbls = db.getTablesByPattern(dbName, showTbls.getPattern());
LOG.info("results : " + tbls.size());
} else {
tbls = db.getAllTables(dbName);
}
// write the results in the file
DataOutputStream outStream = null;
try {
Path resFile = new Path(showTbls.getResFile());
FileSystem fs = resFile.getFileSystem(conf);
outStream = fs.create(resFile);
SortedSet sortedTbls = new TreeSet(tbls);
formatter.showTables(outStream, sortedTbls);
outStream.close();
outStream = null;
} catch (Exception e) {
throw new HiveException(e, ErrorMsg.GENERIC_ERROR, "in database" + dbName);
} finally {
IOUtils.closeStream(outStream);
}
return 0;
}
public int showColumns(Hive db, ShowColumnsDesc showCols)
throws HiveException {
Table table = db.getTable(showCols.getTableName());
// write the results in the file
DataOutputStream outStream = null;
try {
Path resFile = new Path(showCols.getResFile());
FileSystem fs = resFile.getFileSystem(conf);
outStream = fs.create(resFile);
List cols = table.getCols();
cols.addAll(table.getPartCols());
// In case the query is served by HiveServer2, don't pad it with spaces,
// as HiveServer2 output is consumed by JDBC/ODBC clients.
boolean isOutputPadded = !SessionState.get().isHiveServerQuery();
outStream.writeBytes(MetaDataFormatUtils.getAllColumnsInformation(
cols, false, isOutputPadded, null));
outStream.close();
outStream = null;
} catch (IOException e) {
throw new HiveException(e, ErrorMsg.GENERIC_ERROR);
} finally {
IOUtils.closeStream(outStream);
}
return 0;
}
/**
* Write a list of the user defined functions to a file.
*
* @param showFuncs
* are the functions we're interested in.
* @return Returns 0 when execution succeeds and above 0 if it fails.
* @throws HiveException
* Throws this exception if an unexpected error occurs.
*/
private int showFunctions(ShowFunctionsDesc showFuncs) throws HiveException {
// get the tables for the desired patten - populate the output stream
Set funcs = null;
if (showFuncs.getPattern() != null) {
LOG.info("pattern: " + showFuncs.getPattern());
if (showFuncs.getIsLikePattern()) {
funcs = FunctionRegistry.getFunctionNamesByLikePattern(showFuncs.getPattern());
} else {
console.printInfo("SHOW FUNCTIONS is deprecated, please use SHOW FUNCTIONS LIKE instead.");
funcs = FunctionRegistry.getFunctionNames(showFuncs.getPattern());
}
LOG.info("results : " + funcs.size());
} else {
funcs = FunctionRegistry.getFunctionNames();
}
// write the results in the file
DataOutputStream outStream = null;
try {
Path resFile = new Path(showFuncs.getResFile());
FileSystem fs = resFile.getFileSystem(conf);
outStream = fs.create(resFile);
SortedSet sortedFuncs = new TreeSet(funcs);
// To remove the primitive types
sortedFuncs.removeAll(serdeConstants.PrimitiveTypes);
Iterator iterFuncs = sortedFuncs.iterator();
while (iterFuncs.hasNext()) {
// create a row per table name
outStream.writeBytes(iterFuncs.next());
outStream.write(terminator);
}
outStream.close();
outStream = null;
} catch (FileNotFoundException e) {
LOG.warn("show function: " + stringifyException(e));
return 1;
} catch (IOException e) {
LOG.warn("show function: " + stringifyException(e));
return 1;
} catch (Exception e) {
throw new HiveException(e);
} finally {
IOUtils.closeStream(outStream);
}
return 0;
}
/**
* Write a list of the current locks to a file.
*
* @param showLocks
* the locks we're interested in.
* @return Returns 0 when execution succeeds and above 0 if it fails.
* @throws HiveException
* Throws this exception if an unexpected error occurs.
*/
private int showLocks(ShowLocksDesc showLocks) throws HiveException {
Context ctx = driverContext.getCtx();
HiveTxnManager txnManager = ctx.getHiveTxnManager();
HiveLockManager lockMgr = txnManager.getLockManager();
if (txnManager.useNewShowLocksFormat()) return showLocksNewFormat(showLocks, lockMgr);
boolean isExt = showLocks.isExt();
if (lockMgr == null) {
throw new HiveException("show Locks LockManager not specified");
}
// write the results in the file
DataOutputStream outStream = null;
try {
Path resFile = new Path(showLocks.getResFile());
FileSystem fs = resFile.getFileSystem(conf);
outStream = fs.create(resFile);
List locks = null;
if (showLocks.getTableName() == null) {
// TODO should be doing security check here. Users should not be
// able to see each other's locks.
locks = lockMgr.getLocks(false, isExt);
}
else {
locks = lockMgr.getLocks(getHiveObject(showLocks.getTableName(),
showLocks.getPartSpec()),
true, isExt);
}
Collections.sort(locks, new Comparator() {
@Override
public int compare(HiveLock o1, HiveLock o2) {
int cmp = o1.getHiveLockObject().getName().compareTo(o2.getHiveLockObject().getName());
if (cmp == 0) {
if (o1.getHiveLockMode() == o2.getHiveLockMode()) {
return cmp;
}
// EXCLUSIVE locks occur before SHARED locks
if (o1.getHiveLockMode() == HiveLockMode.EXCLUSIVE) {
return -1;
}
return +1;
}
return cmp;
}
});
Iterator locksIter = locks.iterator();
while (locksIter.hasNext()) {
HiveLock lock = locksIter.next();
outStream.writeBytes(lock.getHiveLockObject().getDisplayName());
outStream.write(separator);
outStream.writeBytes(lock.getHiveLockMode().toString());
if (isExt) {
HiveLockObjectData lockData = lock.getHiveLockObject().getData();
if (lockData != null) {
outStream.write(terminator);
outStream.writeBytes("LOCK_QUERYID:" + lockData.getQueryId());
outStream.write(terminator);
outStream.writeBytes("LOCK_TIME:" + lockData.getLockTime());
outStream.write(terminator);
outStream.writeBytes("LOCK_MODE:" + lockData.getLockMode());
outStream.write(terminator);
outStream.writeBytes("LOCK_QUERYSTRING:" + lockData.getQueryStr());
}
}
outStream.write(terminator);
}
outStream.close();
outStream = null;
} catch (FileNotFoundException e) {
LOG.warn("show function: " + stringifyException(e));
return 1;
} catch (IOException e) {
LOG.warn("show function: " + stringifyException(e));
return 1;
} catch (Exception e) {
throw new HiveException(e.toString(), e);
} finally {
IOUtils.closeStream(outStream);
}
return 0;
}
private int showLocksNewFormat(ShowLocksDesc showLocks, HiveLockManager lm)
throws HiveException {
DbLockManager lockMgr;
if (!(lm instanceof DbLockManager)) {
throw new RuntimeException("New lock format only supported with db lock manager.");
}
lockMgr = (DbLockManager)lm;
ShowLocksResponse rsp = lockMgr.getLocks();
// write the results in the file
DataOutputStream os = null;
try {
Path resFile = new Path(showLocks.getResFile());
FileSystem fs = resFile.getFileSystem(conf);
os = fs.create(resFile);
// Write a header
os.writeBytes("Lock ID");
os.write(separator);
os.writeBytes("Database");
os.write(separator);
os.writeBytes("Table");
os.write(separator);
os.writeBytes("Partition");
os.write(separator);
os.writeBytes("State");
os.write(separator);
os.writeBytes("Type");
os.write(separator);
os.writeBytes("Transaction ID");
os.write(separator);
os.writeBytes("Last Hearbeat");
os.write(separator);
os.writeBytes("Acquired At");
os.write(separator);
os.writeBytes("User");
os.write(separator);
os.writeBytes("Hostname");
os.write(terminator);
List locks = rsp.getLocks();
if (locks != null) {
for (ShowLocksResponseElement lock : locks) {
os.writeBytes(Long.toString(lock.getLockid()));
os.write(separator);
os.writeBytes(lock.getDbname());
os.write(separator);
os.writeBytes((lock.getTablename() == null) ? "NULL" : lock.getTablename());
os.write(separator);
os.writeBytes((lock.getPartname() == null) ? "NULL" : lock.getPartname());
os.write(separator);
os.writeBytes(lock.getState().toString());
os.write(separator);
os.writeBytes(lock.getType().toString());
os.write(separator);
os.writeBytes((lock.getTxnid() == 0) ? "NULL" : Long.toString(lock.getTxnid()));
os.write(separator);
os.writeBytes(Long.toString(lock.getLastheartbeat()));
os.write(separator);
os.writeBytes((lock.getAcquiredat() == 0) ? "NULL" : Long.toString(lock.getAcquiredat()));
os.write(separator);
os.writeBytes(lock.getUser());
os.write(separator);
os.writeBytes(lock.getHostname());
os.write(separator);
os.write(terminator);
}
}
os.close();
os = null;
} catch (FileNotFoundException e) {
LOG.warn("show function: " + stringifyException(e));
return 1;
} catch (IOException e) {
LOG.warn("show function: " + stringifyException(e));
return 1;
} catch (Exception e) {
throw new HiveException(e.toString());
} finally {
IOUtils.closeStream(os);
}
return 0;
}
private int showCompactions(ShowCompactionsDesc desc) throws HiveException {
// Call the metastore to get the currently queued and running compactions.
ShowCompactResponse rsp = db.showCompactions();
// Write the results into the file
DataOutputStream os = null;
try {
Path resFile = new Path(desc.getResFile());
FileSystem fs = resFile.getFileSystem(conf);
os = fs.create(resFile);
// Write a header
os.writeBytes("Database");
os.write(separator);
os.writeBytes("Table");
os.write(separator);
os.writeBytes("Partition");
os.write(separator);
os.writeBytes("Type");
os.write(separator);
os.writeBytes("State");
os.write(separator);
os.writeBytes("Worker");
os.write(separator);
os.writeBytes("Start Time");
os.write(terminator);
if (rsp.getCompacts() != null) {
for (ShowCompactResponseElement e : rsp.getCompacts()) {
os.writeBytes(e.getDbname());
os.write(separator);
os.writeBytes(e.getTablename());
os.write(separator);
String part = e.getPartitionname();
os.writeBytes(part == null ? "NULL" : part);
os.write(separator);
os.writeBytes(e.getType().toString());
os.write(separator);
os.writeBytes(e.getState());
os.write(separator);
String wid = e.getWorkerid();
os.writeBytes(wid == null ? "NULL" : wid);
os.write(separator);
os.writeBytes(Long.toString(e.getStart()));
os.write(terminator);
}
}
os.close();
} catch (IOException e) {
LOG.warn("show compactions: " + stringifyException(e));
return 1;
} finally {
IOUtils.closeStream(os);
}
return 0;
}
private int showTxns(ShowTxnsDesc desc) throws HiveException {
// Call the metastore to get the currently queued and running compactions.
GetOpenTxnsInfoResponse rsp = db.showTransactions();
// Write the results into the file
DataOutputStream os = null;
try {
Path resFile = new Path(desc.getResFile());
FileSystem fs = resFile.getFileSystem(conf);
os = fs.create(resFile);
// Write a header
os.writeBytes("Transaction ID");
os.write(separator);
os.writeBytes("Transaction State");
os.write(separator);
os.writeBytes("User");
os.write(separator);
os.writeBytes("Hostname");
os.write(terminator);
for (TxnInfo txn : rsp.getOpen_txns()) {
os.writeBytes(Long.toString(txn.getId()));
os.write(separator);
os.writeBytes(txn.getState().toString());
os.write(separator);
os.writeBytes(txn.getUser());
os.write(separator);
os.writeBytes(txn.getHostname());
os.write(terminator);
}
os.close();
} catch (IOException e) {
LOG.warn("show transactions: " + stringifyException(e));
return 1;
} finally {
IOUtils.closeStream(os);
}
return 0;
}
/**
* Lock the table/partition specified
*
* @param lockTbl
* the table/partition to be locked along with the mode
* @return Returns 0 when execution succeeds and above 0 if it fails.
* @throws HiveException
* Throws this exception if an unexpected error occurs.
*/
private int lockTable(LockTableDesc lockTbl) throws HiveException {
Context ctx = driverContext.getCtx();
HiveTxnManager txnManager = ctx.getHiveTxnManager();
if (!txnManager.supportsExplicitLock()) {
throw new HiveException(ErrorMsg.LOCK_REQUEST_UNSUPPORTED,
conf.getVar(HiveConf.ConfVars.HIVE_TXN_MANAGER));
}
HiveLockManager lockMgr = txnManager.getLockManager();
if (lockMgr == null) {
throw new HiveException("lock Table LockManager not specified");
}
HiveLockMode mode = HiveLockMode.valueOf(lockTbl.getMode());
String tabName = lockTbl.getTableName();
Table tbl = db.getTable(tabName);
if (tbl == null) {
throw new HiveException("Table " + tabName + " does not exist ");
}
Map partSpec = lockTbl.getPartSpec();
HiveLockObjectData lockData =
new HiveLockObjectData(lockTbl.getQueryId(),
String.valueOf(System.currentTimeMillis()),
"EXPLICIT",
lockTbl.getQueryStr());
if (partSpec == null) {
HiveLock lck = lockMgr.lock(new HiveLockObject(tbl, lockData), mode, true);
if (lck == null) {
return 1;
}
return 0;
}
Partition par = db.getPartition(tbl, partSpec, false);
if (par == null) {
throw new HiveException("Partition " + partSpec + " for table " + tabName + " does not exist");
}
HiveLock lck = lockMgr.lock(new HiveLockObject(par, lockData), mode, true);
if (lck == null) {
return 1;
}
return 0;
}
/**
* Lock the database
*
* @param lockDb
* the database to be locked along with the mode
* @return Returns 0 when execution succeeds and above 0 if it fails.
* @throws HiveException
* Throws this exception if an unexpected error occurs.
*/
private int lockDatabase(LockDatabaseDesc lockDb) throws HiveException {
Context ctx = driverContext.getCtx();
HiveTxnManager txnManager = ctx.getHiveTxnManager();
if (!txnManager.supportsExplicitLock()) {
throw new HiveException(ErrorMsg.LOCK_REQUEST_UNSUPPORTED,
conf.getVar(HiveConf.ConfVars.HIVE_TXN_MANAGER));
}
HiveLockManager lockMgr = txnManager.getLockManager();
if (lockMgr == null) {
throw new HiveException("lock Database LockManager not specified");
}
HiveLockMode mode = HiveLockMode.valueOf(lockDb.getMode());
String dbName = lockDb.getDatabaseName();
Database dbObj = db.getDatabase(dbName);
if (dbObj == null) {
throw new HiveException("Database " + dbName + " does not exist ");
}
HiveLockObjectData lockData =
new HiveLockObjectData(lockDb.getQueryId(),
String.valueOf(System.currentTimeMillis()),
"EXPLICIT", lockDb.getQueryStr());
HiveLock lck = lockMgr.lock(new HiveLockObject(dbObj.getName(), lockData), mode, true);
if (lck == null) {
return 1;
}
return 0;
}
/**
* Unlock the database specified
*
* @param unlockDb
* the database to be unlocked
* @return Returns 0 when execution succeeds and above 0 if it fails.
* @throws HiveException
* Throws this exception if an unexpected error occurs.
*/
private int unlockDatabase(UnlockDatabaseDesc unlockDb) throws HiveException {
Context ctx = driverContext.getCtx();
HiveTxnManager txnManager = ctx.getHiveTxnManager();
if (!txnManager.supportsExplicitLock()) {
throw new HiveException(ErrorMsg.LOCK_REQUEST_UNSUPPORTED,
conf.getVar(HiveConf.ConfVars.HIVE_TXN_MANAGER));
}
HiveLockManager lockMgr = txnManager.getLockManager();
if (lockMgr == null) {
throw new HiveException("unlock Database LockManager not specified");
}
String dbName = unlockDb.getDatabaseName();
Database dbObj = db.getDatabase(dbName);
if (dbObj == null) {
throw new HiveException("Database " + dbName + " does not exist ");
}
HiveLockObject obj = new HiveLockObject(dbObj.getName(), null);
List locks = lockMgr.getLocks(obj, false, false);
if ((locks == null) || (locks.isEmpty())) {
throw new HiveException("Database " + dbName + " is not locked ");
}
for (HiveLock lock: locks) {
lockMgr.unlock(lock);
}
return 0;
}
private HiveLockObject getHiveObject(String tabName,
Map partSpec) throws HiveException {
Table tbl = db.getTable(tabName);
if (tbl == null) {
throw new HiveException("Table " + tabName + " does not exist ");
}
HiveLockObject obj = null;
if (partSpec == null) {
obj = new HiveLockObject(tbl, null);
}
else {
Partition par = db.getPartition(tbl, partSpec, false);
if (par == null) {
throw new HiveException("Partition " + partSpec + " for table " + tabName + " does not exist");
}
obj = new HiveLockObject(par, null);
}
return obj;
}
/**
* Unlock the table/partition specified
*
* @param unlockTbl
* the table/partition to be unlocked
* @return Returns 0 when execution succeeds and above 0 if it fails.
* @throws HiveException
* Throws this exception if an unexpected error occurs.
*/
private int unlockTable(UnlockTableDesc unlockTbl) throws HiveException {
Context ctx = driverContext.getCtx();
HiveTxnManager txnManager = ctx.getHiveTxnManager();
if (!txnManager.supportsExplicitLock()) {
throw new HiveException(ErrorMsg.LOCK_REQUEST_UNSUPPORTED,
conf.getVar(HiveConf.ConfVars.HIVE_TXN_MANAGER));
}
HiveLockManager lockMgr = txnManager.getLockManager();
if (lockMgr == null) {
throw new HiveException("unlock Table LockManager not specified");
}
String tabName = unlockTbl.getTableName();
HiveLockObject obj = getHiveObject(tabName, unlockTbl.getPartSpec());
List locks = lockMgr.getLocks(obj, false, false);
if ((locks == null) || (locks.isEmpty())) {
throw new HiveException("Table " + tabName + " is not locked ");
}
Iterator locksIter = locks.iterator();
while (locksIter.hasNext()) {
HiveLock lock = locksIter.next();
lockMgr.unlock(lock);
}
return 0;
}
/**
* Shows a description of a function.
*
* @param descFunc
* is the function we are describing
* @throws HiveException
*/
private int describeFunction(DescFunctionDesc descFunc) throws HiveException, SQLException {
String funcName = descFunc.getName();
// write the results in the file
DataOutputStream outStream = null;
try {
Path resFile = new Path(descFunc.getResFile());
FileSystem fs = resFile.getFileSystem(conf);
outStream = fs.create(resFile);
// get the function documentation
Description desc = null;
Class funcClass = null;
FunctionInfo functionInfo = FunctionRegistry.getFunctionInfo(funcName);
if (functionInfo != null) {
funcClass = functionInfo.getFunctionClass();
}
if (funcClass != null) {
desc = AnnotationUtils.getAnnotation(funcClass, Description.class);
}
if (desc != null) {
outStream.writeBytes(desc.value().replace("_FUNC_", funcName));
if (descFunc.isExtended()) {
Set synonyms = FunctionRegistry.getFunctionSynonyms(funcName);
if (synonyms.size() > 0) {
outStream.writeBytes("\nSynonyms: " + join(synonyms, ", "));
}
if (desc.extended().length() > 0) {
outStream.writeBytes("\n"
+ desc.extended().replace("_FUNC_", funcName));
}
}
} else {
if (funcClass != null) {
outStream.writeBytes("There is no documentation for function '"
+ funcName + "'");
} else {
outStream.writeBytes("Function '" + funcName + "' does not exist.");
}
}
outStream.write(terminator);
outStream.close();
outStream = null;
} catch (FileNotFoundException e) {
LOG.warn("describe function: " + stringifyException(e));
return 1;
} catch (IOException e) {
LOG.warn("describe function: " + stringifyException(e));
return 1;
} catch (Exception e) {
throw new HiveException(e);
} finally {
IOUtils.closeStream(outStream);
}
return 0;
}
private int descDatabase(DescDatabaseDesc descDatabase) throws HiveException {
DataOutputStream outStream = null;
try {
Path resFile = new Path(descDatabase.getResFile());
FileSystem fs = resFile.getFileSystem(conf);
outStream = fs.create(resFile);
Database database = db.getDatabase(descDatabase.getDatabaseName());
if (database == null) {
throw new HiveException(ErrorMsg.DATABASE_NOT_EXISTS, descDatabase.getDatabaseName());
}
Map params = null;
if (descDatabase.isExt()) {
params = database.getParameters();
}
// If this is a q-test, let's order the params map (lexicographically) by
// key. This is to get consistent param ordering between Java7 and Java8.
if (HiveConf.getBoolVar(conf, HiveConf.ConfVars.HIVE_IN_TEST) &&
params != null) {
params = new TreeMap(params);
}
String location = database.getLocationUri();
if (HiveConf.getBoolVar(conf, HiveConf.ConfVars.HIVE_IN_TEST)) {
location = "location/in/test";
}
PrincipalType ownerType = database.getOwnerType();
formatter.showDatabaseDescription(outStream, database.getName(),
database.getDescription(), location,
database.getOwnerName(), (null == ownerType) ? null : ownerType.name(), params);
outStream.close();
outStream = null;
} catch (IOException e) {
throw new HiveException(e, ErrorMsg.GENERIC_ERROR);
} finally {
IOUtils.closeStream(outStream);
}
return 0;
}
/**
* Write the status of tables to a file.
*
* @param db
* The database in question.
* @param showTblStatus
* tables we are interested in
* @return Return 0 when execution succeeds and above 0 if it fails.
*/
private int showTableStatus(Hive db, ShowTableStatusDesc showTblStatus) throws HiveException {
// get the tables for the desired pattern - populate the output stream
List
tbls = new ArrayList
();
Map part = showTblStatus.getPartSpec();
Partition par = null;
if (part != null) {
Table tbl = db.getTable(showTblStatus.getDbName(), showTblStatus.getPattern());
par = db.getPartition(tbl, part, false);
if (par == null) {
throw new HiveException("Partition " + part + " for table "
+ showTblStatus.getPattern() + " does not exist.");
}
tbls.add(tbl);
} else {
LOG.info("pattern: " + showTblStatus.getPattern());
List tblStr = db.getTablesForDb(showTblStatus.getDbName(),
showTblStatus.getPattern());
SortedSet sortedTbls = new TreeSet(tblStr);
Iterator iterTbls = sortedTbls.iterator();
while (iterTbls.hasNext()) {
// create a row per table name
String tblName = iterTbls.next();
Table tbl = db.getTable(showTblStatus.getDbName(), tblName);
tbls.add(tbl);
}
LOG.info("results : " + tblStr.size());
}
// write the results in the file
DataOutputStream outStream = null;
try {
Path resFile = new Path(showTblStatus.getResFile());
FileSystem fs = resFile.getFileSystem(conf);
outStream = fs.create(resFile);
formatter.showTableStatus(outStream, db, conf, tbls, part, par);
outStream.close();
outStream = null;
} catch (Exception e) {
throw new HiveException(e, ErrorMsg.GENERIC_ERROR, "show table status");
} finally {
IOUtils.closeStream(outStream);
}
return 0;
}
/**
* Write the properties of a table to a file.
*
* @param db
* The database in question.
* @param showTblPrpt
* This is the table we're interested in.
* @return Returns 0 when execution succeeds and above 0 if it fails.
* @throws HiveException
* Throws this exception if an unexpected error occurs.
*/
private int showTableProperties(Hive db, ShowTblPropertiesDesc showTblPrpt) throws HiveException {
String tableName = showTblPrpt.getTableName();
// show table properties - populate the output stream
Table tbl = db.getTable(tableName, false);
try {
if (tbl == null) {
String errMsg = "Table " + tableName + " does not exist";
writeToFile(errMsg, showTblPrpt.getResFile());
return 0;
}
LOG.info("DDLTask: show properties for " + tbl.getTableName());
StringBuilder builder = new StringBuilder();
String propertyName = showTblPrpt.getPropertyName();
if (propertyName != null) {
String propertyValue = tbl.getProperty(propertyName);
if (propertyValue == null) {
String errMsg = "Table " + tableName + " does not have property: " + propertyName;
builder.append(errMsg);
}
else {
builder.append(propertyValue);
}
}
else {
Map properties = new TreeMap(tbl.getParameters());
for (Entry entry : properties.entrySet()) {
appendNonNull(builder, entry.getKey(), true);
appendNonNull(builder, entry.getValue());
}
}
LOG.info("DDLTask: written data for showing properties of " + tbl.getTableName());
writeToFile(builder.toString(), showTblPrpt.getResFile());
} catch (FileNotFoundException e) {
LOG.info("show table properties: " + stringifyException(e));
return 1;
} catch (IOException e) {
LOG.info("show table properties: " + stringifyException(e));
return 1;
} catch (Exception e) {
throw new HiveException(e);
}
return 0;
}
private void writeToFile(String data, String file) throws IOException {
Path resFile = new Path(file);
FileSystem fs = resFile.getFileSystem(conf);
FSDataOutputStream out = fs.create(resFile);
try {
if (data != null && !data.isEmpty()) {
OutputStreamWriter writer = new OutputStreamWriter(out, "UTF-8");
writer.write(data);
writer.write((char) terminator);
writer.flush();
}
} finally {
IOUtils.closeStream(out);
}
}
/**
* Write the description of a table to a file.
*
* @param db
* The database in question.
* @param descTbl
* This is the table we're interested in.
* @return Returns 0 when execution succeeds and above 0 if it fails.
* @throws HiveException
* Throws this exception if an unexpected error occurs.
*/
private int describeTable(Hive db, DescTableDesc descTbl) throws HiveException {
String colPath = descTbl.getColumnPath();
String tableName = descTbl.getTableName();
// describe the table - populate the output stream
Table tbl = db.getTable(tableName, false);
Partition part = null;
DataOutputStream outStream = null;
try {
Path resFile = new Path(descTbl.getResFile());
if (tbl == null) {
FileSystem fs = resFile.getFileSystem(conf);
outStream = fs.create(resFile);
outStream.close();
outStream = null;
throw new HiveException(ErrorMsg.INVALID_TABLE, tableName);
}
if (descTbl.getPartSpec() != null) {
part = db.getPartition(tbl, descTbl.getPartSpec(), false);
if (part == null) {
FileSystem fs = resFile.getFileSystem(conf);
outStream = fs.create(resFile);
outStream.close();
outStream = null;
throw new HiveException(ErrorMsg.INVALID_PARTITION,
StringUtils.join(descTbl.getPartSpec().keySet(), ','), tableName);
}
tbl = part.getTable();
}
} catch (IOException e) {
throw new HiveException(e, ErrorMsg.GENERIC_ERROR, tableName);
} finally {
IOUtils.closeStream(outStream);
}
try {
LOG.info("DDLTask: got data for " + tbl.getTableName());
Path resFile = new Path(descTbl.getResFile());
FileSystem fs = resFile.getFileSystem(conf);
outStream = fs.create(resFile);
List cols = null;
List colStats = null;
Deserializer deserializer = tbl.getDeserializer(true);
if (deserializer instanceof AbstractSerDe) {
String errorMsgs = ((AbstractSerDe) deserializer).getConfigurationErrors();
if (errorMsgs != null && !errorMsgs.isEmpty()) {
throw new SQLException(errorMsgs);
}
}
if (colPath.equals(tableName)) {
cols = (part == null || tbl.getTableType() == TableType.VIRTUAL_VIEW) ?
tbl.getCols() : part.getCols();
if (!descTbl.isFormatted()) {
cols.addAll(tbl.getPartCols());
}
} else {
cols = Hive.getFieldsFromDeserializer(colPath, deserializer);
if (descTbl.isFormatted()) {
// when column name is specified in describe table DDL, colPath will
// will be table_name.column_name
String colName = colPath.split("\\.")[1];
String[] dbTab = Utilities.getDbTableName(tableName);
List colNames = new ArrayList();
colNames.add(colName.toLowerCase());
if (null == part) {
colStats = db.getTableColumnStatistics(dbTab[0].toLowerCase(), dbTab[1].toLowerCase(), colNames);
} else {
List partitions = new ArrayList();
partitions.add(part.getName());
colStats = db.getPartitionColumnStatistics(dbTab[0].toLowerCase(), dbTab[1].toLowerCase(), partitions, colNames).get(part.getName());
}
}
}
fixDecimalColumnTypeName(cols);
// In case the query is served by HiveServer2, don't pad it with spaces,
// as HiveServer2 output is consumed by JDBC/ODBC clients.
boolean isOutputPadded = !SessionState.get().isHiveServerQuery();
formatter.describeTable(outStream, colPath, tableName, tbl, part,
cols, descTbl.isFormatted(), descTbl.isExt(),
descTbl.isPretty(), isOutputPadded, colStats);
LOG.info("DDLTask: written data for " + tbl.getTableName());
outStream.close();
outStream = null;
} catch (SQLException e) {
throw new HiveException(e, ErrorMsg.GENERIC_ERROR, tableName);
} catch (IOException e) {
throw new HiveException(e, ErrorMsg.GENERIC_ERROR, tableName);
} finally {
IOUtils.closeStream(outStream);
}
return 0;
}
/**
* Fix the type name of a column of type decimal w/o precision/scale specified. This makes
* the describe table show "decimal(10,0)" instead of "decimal" even if the type stored
* in metastore is "decimal", which is possible with previous hive.
*
* @param cols columns that to be fixed as such
*/
private static void fixDecimalColumnTypeName(List cols) {
for (FieldSchema col : cols) {
if (serdeConstants.DECIMAL_TYPE_NAME.equals(col.getType())) {
col.setType(DecimalTypeInfo.getQualifiedName(HiveDecimal.USER_DEFAULT_PRECISION,
HiveDecimal.USER_DEFAULT_SCALE));
}
}
}
static String writeGrantInfo(List privileges, boolean testMode) {
if (privileges == null || privileges.isEmpty()) {
return "";
}
StringBuilder builder = new StringBuilder();
//sort the list to get sorted (deterministic) output (for ease of testing)
Collections.sort(privileges, new Comparator() {
@Override
public int compare(HivePrivilegeInfo o1, HivePrivilegeInfo o2) {
int compare = o1.getObject().compareTo(o2.getObject());
if (compare == 0) {
compare = o1.getPrincipal().compareTo(o2.getPrincipal());
}
if (compare == 0) {
compare = o1.getPrivilege().compareTo(o2.getPrivilege());
}
return compare;
}
});
for (HivePrivilegeInfo privilege : privileges) {
HivePrincipal principal = privilege.getPrincipal();
HivePrivilegeObject resource = privilege.getObject();
HivePrincipal grantor = privilege.getGrantorPrincipal();
appendNonNull(builder, resource.getDbname(), true);
appendNonNull(builder, resource.getObjectName());
appendNonNull(builder, resource.getPartKeys());
appendNonNull(builder, resource.getColumns());
appendNonNull(builder, principal.getName());
appendNonNull(builder, principal.getType());
appendNonNull(builder, privilege.getPrivilege().getName());
appendNonNull(builder, privilege.isGrantOption());
appendNonNull(builder, testMode ? -1 : privilege.getGrantTime() * 1000L);
appendNonNull(builder, grantor.getName());
}
return builder.toString();
}
static String writeRoleGrantsInfo(List roleGrants, boolean testMode) {
if (roleGrants == null || roleGrants.isEmpty()) {
return "";
}
StringBuilder builder = new StringBuilder();
//sort the list to get sorted (deterministic) output (for ease of testing)
Collections.sort(roleGrants);
for (RolePrincipalGrant roleGrant : roleGrants) {
appendNonNull(builder, roleGrant.getRoleName(), true);
appendNonNull(builder, roleGrant.isGrantOption());
appendNonNull(builder, testMode ? -1 : roleGrant.getGrantTime() * 1000L);
appendNonNull(builder, roleGrant.getGrantorName());
}
return builder.toString();
}
static String writeRolesGrantedInfo(List roles, boolean testMode) {
if (roles == null || roles.isEmpty()) {
return "";
}
StringBuilder builder = new StringBuilder();
//sort the list to get sorted (deterministic) output (for ease of testing)
Collections.sort(roles);
for (HiveRoleGrant role : roles) {
appendNonNull(builder, role.getRoleName(), true);
appendNonNull(builder, role.isGrantOption());
appendNonNull(builder, testMode ? -1 : role.getGrantTime() * 1000L);
appendNonNull(builder, role.getGrantor());
}
return builder.toString();
}
static StringBuilder appendNonNull(StringBuilder builder, Object value) {
return appendNonNull(builder, value, false);
}
static StringBuilder appendNonNull(StringBuilder builder, Object value, boolean firstColumn) {
if (!firstColumn) {
builder.append((char)separator);
} else if (builder.length() > 0) {
builder.append((char)terminator);
}
if (value != null) {
builder.append(value);
}
return builder;
}
private void setAlterProtectMode(boolean protectModeEnable,
AlterTableDesc.ProtectModeType protectMode,
ProtectMode mode) {
if (protectMode == AlterTableDesc.ProtectModeType.OFFLINE) {
mode.offline = protectModeEnable;
} else if (protectMode == AlterTableDesc.ProtectModeType.NO_DROP) {
mode.noDrop = protectModeEnable;
} else if (protectMode == AlterTableDesc.ProtectModeType.NO_DROP_CASCADE) {
mode.noDropCascade = protectModeEnable;
}
}
/**
* Alter a given table.
*
* @param db
* The database in question.
* @param alterTbl
* This is the table we're altering.
* @return Returns 0 when execution succeeds and above 0 if it fails.
* @throws HiveException
* Throws this exception if an unexpected error occurs.
*/
private int alterTable(Hive db, AlterTableDesc alterTbl) throws HiveException {
// alter the table
Table tbl = db.getTable(alterTbl.getOldName());
List allPartitions = null;
if (alterTbl.getPartSpec() != null) {
Map partSpec = alterTbl.getPartSpec();
if (DDLSemanticAnalyzer.isFullSpec(tbl, partSpec)) {
allPartitions = new ArrayList();
Partition part = db.getPartition(tbl, partSpec, false);
if (part == null) {
// User provided a fully specified partition spec but it doesn't exist, fail.
throw new HiveException(ErrorMsg.INVALID_PARTITION,
StringUtils.join(alterTbl.getPartSpec().keySet(), ',') + " for table " + alterTbl.getOldName());
}
allPartitions.add(part);
} else {
// DDLSemanticAnalyzer has already checked if partial partition specs are allowed,
// thus we should not need to check it here.
allPartitions = db.getPartitions(tbl, alterTbl.getPartSpec());
}
}
Table oldTbl = tbl.copy();
if (allPartitions != null) {
// Alter all partitions
for (Partition part : allPartitions) {
alterTableOrSinglePartition(alterTbl, tbl, part);
}
} else {
// Just alter the table
alterTableOrSinglePartition(alterTbl, tbl, null);
}
if (allPartitions == null) {
updateModifiedParameters(tbl.getTTable().getParameters(), conf);
tbl.checkValidity();
} else {
for (Partition tmpPart: allPartitions) {
updateModifiedParameters(tmpPart.getParameters(), conf);
}
}
try {
if (allPartitions == null) {
db.alterTable(alterTbl.getOldName(), tbl, alterTbl.getIsCascade());
} else {
db.alterPartitions(tbl.getTableName(), allPartitions);
}
} catch (InvalidOperationException e) {
LOG.error("alter table: " + stringifyException(e));
throw new HiveException(e, ErrorMsg.GENERIC_ERROR);
}
// This is kind of hacky - the read entity contains the old table, whereas
// the write entity
// contains the new table. This is needed for rename - both the old and the
// new table names are
// passed
// Don't acquire locks for any of these, we have already asked for them in DDLSemanticAnalyzer.
if (allPartitions != null ) {
for (Partition tmpPart: allPartitions) {
work.getInputs().add(new ReadEntity(tmpPart));
work.getOutputs().add(new WriteEntity(tmpPart, WriteEntity.WriteType.DDL_NO_LOCK));
}
} else {
work.getInputs().add(new ReadEntity(oldTbl));
work.getOutputs().add(new WriteEntity(tbl, WriteEntity.WriteType.DDL_NO_LOCK));
}
return 0;
}
private int alterTableOrSinglePartition(AlterTableDesc alterTbl, Table tbl, Partition part)
throws HiveException {
if (alterTbl.getOp() == AlterTableDesc.AlterTableTypes.RENAME) {
tbl.setDbName(Utilities.getDatabaseName(alterTbl.getNewName()));
tbl.setTableName(Utilities.getTableName(alterTbl.getNewName()));
} else if (alterTbl.getOp() == AlterTableDesc.AlterTableTypes.ADDCOLS) {
List oldCols = (part == null ? tbl.getCols() : part.getCols());
StorageDescriptor sd = (part == null ? tbl.getTTable().getSd() : part.getTPartition().getSd());
List newCols = alterTbl.getNewCols();
String serializationLib = sd.getSerdeInfo().getSerializationLib();
if (serializationLib.equals(
"org.apache.hadoop.hive.serde.thrift.columnsetSerDe")) {
console
.printInfo("Replacing columns for columnsetSerDe and changing to LazySimpleSerDe");
sd.getSerdeInfo().setSerializationLib(LazySimpleSerDe.class.getName());
sd.setCols(newCols);
} else {
// make sure the columns does not already exist
Iterator iterNewCols = newCols.iterator();
while (iterNewCols.hasNext()) {
FieldSchema newCol = iterNewCols.next();
String newColName = newCol.getName();
Iterator iterOldCols = oldCols.iterator();
while (iterOldCols.hasNext()) {
String oldColName = iterOldCols.next().getName();
if (oldColName.equalsIgnoreCase(newColName)) {
throw new HiveException(ErrorMsg.DUPLICATE_COLUMN_NAMES, newColName);
}
}
oldCols.add(newCol);
}
sd.setCols(oldCols);
}
} else if (alterTbl.getOp() == AlterTableDesc.AlterTableTypes.RENAMECOLUMN) {
List oldCols = (part == null ? tbl.getCols() : part.getCols());
StorageDescriptor sd = (part == null ? tbl.getTTable().getSd() : part.getTPartition().getSd());
List newCols = new ArrayList();
Iterator iterOldCols = oldCols.iterator();
String oldName = alterTbl.getOldColName();
String newName = alterTbl.getNewColName();
String type = alterTbl.getNewColType();
String comment = alterTbl.getNewColComment();
boolean first = alterTbl.getFirst();
String afterCol = alterTbl.getAfterCol();
FieldSchema column = null;
boolean found = false;
int position = -1;
if (first) {
position = 0;
}
int i = 1;
while (iterOldCols.hasNext()) {
FieldSchema col = iterOldCols.next();
String oldColName = col.getName();
if (oldColName.equalsIgnoreCase(newName)
&& !oldColName.equalsIgnoreCase(oldName)) {
throw new HiveException(ErrorMsg.DUPLICATE_COLUMN_NAMES, newName);
} else if (oldColName.equalsIgnoreCase(oldName)) {
col.setName(newName);
if (type != null && !type.trim().equals("")) {
col.setType(type);
}
if (comment != null) {
col.setComment(comment);
}
found = true;
if (first || (afterCol != null && !afterCol.trim().equals(""))) {
column = col;
continue;
}
}
if (afterCol != null && !afterCol.trim().equals("")
&& oldColName.equalsIgnoreCase(afterCol)) {
position = i;
}
i++;
newCols.add(col);
}
// did not find the column
if (!found) {
throw new HiveException(ErrorMsg.INVALID_COLUMN, oldName);
}
// after column is not null, but we did not find it.
if ((afterCol != null && !afterCol.trim().equals("")) && position < 0) {
throw new HiveException(ErrorMsg.INVALID_COLUMN, afterCol);
}
if (position >= 0) {
newCols.add(position, column);
}
sd.setCols(newCols);
} else if (alterTbl.getOp() == AlterTableDesc.AlterTableTypes.REPLACECOLS) {
StorageDescriptor sd = (part == null ? tbl.getTTable().getSd() : part.getTPartition().getSd());
// change SerDe to LazySimpleSerDe if it is columnsetSerDe
String serializationLib = sd.getSerdeInfo().getSerializationLib();
if (serializationLib.equals(
"org.apache.hadoop.hive.serde.thrift.columnsetSerDe")) {
console
.printInfo("Replacing columns for columnsetSerDe and changing to LazySimpleSerDe");
sd.getSerdeInfo().setSerializationLib(LazySimpleSerDe.class.getName());
} else if (!serializationLib.equals(
MetadataTypedColumnsetSerDe.class.getName())
&& !serializationLib.equals(LazySimpleSerDe.class.getName())
&& !serializationLib.equals(ColumnarSerDe.class.getName())
&& !serializationLib.equals(DynamicSerDe.class.getName())
&& !serializationLib.equals(ParquetHiveSerDe.class.getName())) {
throw new HiveException(ErrorMsg.CANNOT_REPLACE_COLUMNS, alterTbl.getOldName());
}
sd.setCols(alterTbl.getNewCols());
} else if (alterTbl.getOp() == AlterTableDesc.AlterTableTypes.ADDPROPS) {
tbl.getTTable().getParameters().putAll(alterTbl.getProps());
} else if (alterTbl.getOp() == AlterTableDesc.AlterTableTypes.DROPPROPS) {
Iterator keyItr = alterTbl.getProps().keySet().iterator();
while (keyItr.hasNext()) {
tbl.getTTable().getParameters().remove(keyItr.next());
}
} else if (alterTbl.getOp() == AlterTableDesc.AlterTableTypes.ADDSERDEPROPS) {
StorageDescriptor sd = (part == null ? tbl.getTTable().getSd() : part.getTPartition().getSd());
sd.getSerdeInfo().getParameters().putAll(alterTbl.getProps());
} else if (alterTbl.getOp() == AlterTableDesc.AlterTableTypes.ADDSERDE) {
StorageDescriptor sd = (part == null ? tbl.getTTable().getSd() : part.getTPartition().getSd());
String serdeName = alterTbl.getSerdeName();
sd.getSerdeInfo().setSerializationLib(serdeName);
if ((alterTbl.getProps() != null) && (alterTbl.getProps().size() > 0)) {
sd.getSerdeInfo().getParameters().putAll(alterTbl.getProps());
}
if (part != null) {
part.getTPartition().getSd().setCols(part.getTPartition().getSd().getCols());
} else {
if (!Table.hasMetastoreBasedSchema(conf, serdeName)) {
tbl.setFields(Hive.getFieldsFromDeserializer(tbl.getTableName(), tbl.
getDeserializer()));
}
}
} else if (alterTbl.getOp() == AlterTableDesc.AlterTableTypes.ADDFILEFORMAT) {
StorageDescriptor sd = (part == null ? tbl.getTTable().getSd() : part.getTPartition().getSd());
sd.setInputFormat(alterTbl.getInputFormat());
sd.setOutputFormat(alterTbl.getOutputFormat());
if (alterTbl.getSerdeName() != null) {
sd.getSerdeInfo().setSerializationLib(alterTbl.getSerdeName());
}
} else if (alterTbl.getOp() == AlterTableDesc.AlterTableTypes.ALTERPROTECTMODE) {
boolean protectModeEnable = alterTbl.isProtectModeEnable();
AlterTableDesc.ProtectModeType protectMode = alterTbl.getProtectModeType();
ProtectMode mode = null;
if (part != null) {
mode = part.getProtectMode();
setAlterProtectMode(protectModeEnable, protectMode, mode);
part.setProtectMode(mode);
} else {
mode = tbl.getProtectMode();
setAlterProtectMode(protectModeEnable,protectMode, mode);
tbl.setProtectMode(mode);
}
} else if (alterTbl.getOp() == AlterTableDesc.AlterTableTypes.ADDCLUSTERSORTCOLUMN) {
StorageDescriptor sd = (part == null ? tbl.getTTable().getSd() : part.getTPartition().getSd());
// validate sort columns and bucket columns
List columns = Utilities.getColumnNamesFromFieldSchema(tbl
.getCols());
if (!alterTbl.isTurnOffSorting()) {
Utilities.validateColumnNames(columns, alterTbl.getBucketColumns());
}
if (alterTbl.getSortColumns() != null) {
Utilities.validateColumnNames(columns, Utilities
.getColumnNamesFromSortCols(alterTbl.getSortColumns()));
}
if (alterTbl.isTurnOffSorting()) {
sd.setSortCols(new ArrayList());
} else if (alterTbl.getNumberBuckets() == -1) {
// -1 buckets means to turn off bucketing
sd.setBucketCols(new ArrayList());
sd.setNumBuckets(-1);
sd.setSortCols(new ArrayList());
} else {
sd.setBucketCols(alterTbl.getBucketColumns());
sd.setNumBuckets(alterTbl.getNumberBuckets());
sd.setSortCols(alterTbl.getSortColumns());
}
} else if (alterTbl.getOp() == AlterTableDesc.AlterTableTypes.ALTERLOCATION) {
StorageDescriptor sd = (part == null ? tbl.getTTable().getSd() : part.getTPartition().getSd());
String newLocation = alterTbl.getNewLocation();
try {
URI locUri = new URI(newLocation);
if (!locUri.isAbsolute() || locUri.getScheme() == null
|| locUri.getScheme().trim().equals("")) {
throw new HiveException(ErrorMsg.BAD_LOCATION_VALUE, newLocation);
}
sd.setLocation(newLocation);
} catch (URISyntaxException e) {
throw new HiveException(e);
}
} else if (alterTbl.getOp() == AlterTableDesc.AlterTableTypes.ADDSKEWEDBY) {
// Validation's been done at compile time. no validation is needed here.
List skewedColNames = null;
List> skewedValues = null;
if (alterTbl.isTurnOffSkewed()) {
// Convert skewed table to non-skewed table.
skewedColNames = new ArrayList();
skewedValues = new ArrayList>();
} else {
skewedColNames = alterTbl.getSkewedColNames();
skewedValues = alterTbl.getSkewedColValues();
}
if ( null == tbl.getSkewedInfo()) {
// Convert non-skewed table to skewed table.
SkewedInfo skewedInfo = new SkewedInfo();
skewedInfo.setSkewedColNames(skewedColNames);
skewedInfo.setSkewedColValues(skewedValues);
tbl.setSkewedInfo(skewedInfo);
} else {
tbl.setSkewedColNames(skewedColNames);
tbl.setSkewedColValues(skewedValues);
}
tbl.setStoredAsSubDirectories(alterTbl.isStoredAsSubDirectories());
} else if (alterTbl.getOp() == AlterTableDesc.AlterTableTypes.ALTERSKEWEDLOCATION) {
// process location one-by-one
Map,String> locMaps = alterTbl.getSkewedLocations();
Set> keys = locMaps.keySet();
for(List key:keys){
String newLocation = locMaps.get(key);
try {
URI locUri = new URI(newLocation);
if (part != null) {
List slk = new ArrayList(key);
part.setSkewedValueLocationMap(slk, locUri.toString());
} else {
List slk = new ArrayList(key);
tbl.setSkewedValueLocationMap(slk, locUri.toString());
}
} catch (URISyntaxException e) {
throw new HiveException(e);
}
}
} else if (alterTbl.getOp() == AlterTableTypes.ALTERBUCKETNUM) {
if (part != null) {
if (part.getBucketCount() == alterTbl.getNumberBuckets()) {
return 0;
}
part.setBucketCount(alterTbl.getNumberBuckets());
} else {
if (tbl.getNumBuckets() == alterTbl.getNumberBuckets()) {
return 0;
}
tbl.setNumBuckets(alterTbl.getNumberBuckets());
}
} else {
throw new HiveException(ErrorMsg.UNSUPPORTED_ALTER_TBL_OP, alterTbl.getOp().toString());
}
return 0;
}
/**
* Drop a given table or some partitions. DropTableDesc is currently used for both.
*
* @param db
* The database in question.
* @param dropTbl
* This is the table we're dropping.
* @throws HiveException
* Throws this exception if an unexpected error occurs.
*/
private void dropTableOrPartitions(Hive db, DropTableDesc dropTbl) throws HiveException {
// We need to fetch the table before it is dropped so that it can be passed to
// post-execution hook
Table tbl = null;
try {
tbl = db.getTable(dropTbl.getTableName());
} catch (InvalidTableException e) {
// drop table is idempotent
}
if (dropTbl.getPartSpecs() == null) {
dropTable(db, tbl, dropTbl);
} else {
dropPartitions(db, tbl, dropTbl);
}
}
private void dropPartitions(Hive db, Table tbl, DropTableDesc dropTbl) throws HiveException {
ReplicationSpec replicationSpec = dropTbl.getReplicationSpec();
if (replicationSpec.isInReplicationScope()){
/**
* ALTER TABLE DROP PARTITION ... FOR REPLICATION(x) behaves as a DROP PARTITION IF OLDER THAN x
*
* So, we check each partition that matches our DropTableDesc.getPartSpecs(), and drop it only
* if it's older than the event that spawned this replicated request to drop partition
*/
// TODO: Current implementation of replication will result in DROP_PARTITION under replication
// scope being called per-partition instead of multiple partitions. However, to be robust, we
// must still handle the case of multiple partitions in case this assumption changes in the
// future. However, if this assumption changes, we will not be very performant if we fetch
// each partition one-by-one, and then decide on inspection whether or not this is a candidate
// for dropping. Thus, we need a way to push this filter (replicationSpec.allowEventReplacementInto)
// to the metastore to allow it to do drop a partition or not, depending on a Predicate on the
// parameter key values.
for (DropTableDesc.PartSpec partSpec : dropTbl.getPartSpecs()){
try {
for (Partition p : Iterables.filter(
db.getPartitionsByFilter(tbl, partSpec.getPartSpec().getExprString()),
replicationSpec.allowEventReplacementInto())){
db.dropPartition(tbl.getDbName(),tbl.getTableName(),p.getValues(),true);
}
} catch (NoSuchObjectException e){
// ignore NSOE because that means there's nothing to drop.
} catch (Exception e) {
throw new HiveException(e.getMessage(), e);
}
}
return;
}
// ifExists is currently verified in DDLSemanticAnalyzer
List droppedParts
= db.dropPartitions(dropTbl.getTableName(),
dropTbl.getPartSpecs(),
PartitionDropOptions.instance()
.deleteData(true)
.ignoreProtection(dropTbl.getIgnoreProtection())
.ifExists(true)
.purgeData(dropTbl.getIfPurge()));
for (Partition partition : droppedParts) {
console.printInfo("Dropped the partition " + partition.getName());
// We have already locked the table, don't lock the partitions.
work.getOutputs().add(new WriteEntity(partition, WriteEntity.WriteType.DDL_NO_LOCK));
};
}
private void dropTable(Hive db, Table tbl, DropTableDesc dropTbl) throws HiveException {
// This is a true DROP TABLE
if (tbl != null) {
if (tbl.isView()) {
if (!dropTbl.getExpectView()) {
if (dropTbl.getIfExists()) {
return;
}
throw new HiveException("Cannot drop a view with DROP TABLE");
}
} else {
if (dropTbl.getExpectView()) {
if (dropTbl.getIfExists()) {
return;
}
throw new HiveException(
"Cannot drop a base table with DROP VIEW");
}
}
}
if (tbl != null && !tbl.canDrop()) {
throw new HiveException("Table " + tbl.getTableName() +
" is protected from being dropped");
}
ReplicationSpec replicationSpec = dropTbl.getReplicationSpec();
if ((tbl!= null) && replicationSpec.isInReplicationScope()){
/**
* DROP TABLE FOR REPLICATION behaves differently from DROP TABLE IF EXISTS - it more closely
* matches a DROP TABLE IF OLDER THAN(x) semantic.
*
* Ideally, commands executed under the scope of replication need to be idempotent and resilient
* to repeats. What can happen, sometimes, is that a drone processing a replication task can
* have been abandoned for not returning in time, but still execute its task after a while,
* which should not result in it mucking up data that has been impressed later on. So, for eg.,
* if we create partition P1, followed by droppping it, followed by creating it yet again,
* the replication of that drop should not drop the newer partition if it runs after the destination
* object is already in the newer state.
*
* Thus, we check the replicationSpec.allowEventReplacementInto to determine whether or not we can
* drop the object in question(will return false if object is newer than the event, true if not)
*
* In addition, since DROP TABLE FOR REPLICATION can result in a table not being dropped, while DROP
* TABLE will always drop the table, and the included partitions, DROP TABLE FOR REPLICATION must
* do one more thing - if it does not drop the table because the table is in a newer state, it must
* drop the partitions inside it that are older than this event. To wit, DROP TABLE FOR REPL
* acts like a recursive DROP TABLE IF OLDER.
*/
if (!replicationSpec.allowEventReplacementInto(tbl)){
// Drop occured as part of replicating a drop, but the destination
// table was newer than the event being replicated. Ignore, but drop
// any partitions inside that are older.
if (tbl.isPartitioned()){
PartitionIterable partitions = new PartitionIterable(db,tbl,null,conf.getIntVar(
HiveConf.ConfVars.METASTORE_BATCH_RETRIEVE_MAX));
for (Partition p : Iterables.filter(partitions, replicationSpec.allowEventReplacementInto())){
db.dropPartition(tbl.getDbName(),tbl.getTableName(),p.getValues(),true);
}
}
return; // table is newer, leave it be.
}
}
int partitionBatchSize = HiveConf.getIntVar(conf,
ConfVars.METASTORE_BATCH_RETRIEVE_TABLE_PARTITION_MAX);
// We should check that all the partitions of the table can be dropped
if (tbl != null && tbl.isPartitioned()) {
List partitionNames = db.getPartitionNames(tbl.getDbName(), tbl.getTableName(), (short)-1);
for(int i=0; i < partitionNames.size(); i+= partitionBatchSize) {
List partNames = partitionNames.subList(i, Math.min(i+partitionBatchSize,
partitionNames.size()));
List listPartitions = db.getPartitionsByNames(tbl, partNames);
for (Partition p: listPartitions) {
if (!p.canDrop()) {
throw new HiveException("Table " + tbl.getTableName() +
" Partition" + p.getName() +
" is protected from being dropped");
}
}
}
}
// drop the table
db.dropTable(dropTbl.getTableName(), dropTbl.getIfPurge());
if (tbl != null) {
// We have already locked the table in DDLSemanticAnalyzer, don't do it again here
work.getOutputs().add(new WriteEntity(tbl, WriteEntity.WriteType.DDL_NO_LOCK));
}
}
/**
* Update last_modified_by and last_modified_time parameters in parameter map.
*
* @param params
* Parameters.
* @param conf
* HiveConf of session
*/
private boolean updateModifiedParameters(Map params, HiveConf conf) throws HiveException {
String user = null;
user = SessionState.getUserFromAuthenticator();
params.put("last_modified_by", user);
params.put("last_modified_time", Long.toString(System.currentTimeMillis() / 1000));
return true;
}
/**
* Check if the given serde is valid.
*/
private void validateSerDe(String serdeName) throws HiveException {
try {
Deserializer d = ReflectionUtil.newInstance(conf.getClassByName(serdeName).
asSubclass(Deserializer.class), conf);
if (d != null) {
LOG.debug("Found class for " + serdeName);
}
} catch (Exception e) {
throw new HiveException("Cannot validate serde: " + serdeName, e);
}
}
/**
* Create a Database
* @param db
* @param crtDb
* @return Always returns 0
* @throws HiveException
*/
private int createDatabase(Hive db, CreateDatabaseDesc crtDb)
throws HiveException {
Database database = new Database();
database.setName(crtDb.getName());
database.setDescription(crtDb.getComment());
database.setLocationUri(crtDb.getLocationUri());
database.setParameters(crtDb.getDatabaseProperties());
database.setOwnerName(SessionState.getUserFromAuthenticator());
database.setOwnerType(PrincipalType.USER);
try {
if (!Utilities.isDefaultNameNode(conf)) {
makeLocationQualified(database);
}
db.createDatabase(database, crtDb.getIfNotExists());
}
catch (AlreadyExistsException ex) {
//it would be better if AlreadyExistsException had an errorCode field....
throw new HiveException(ex, ErrorMsg.DATABSAE_ALREADY_EXISTS, crtDb.getName());
}
return 0;
}
/**
* Drop a Database
* @param db
* @param dropDb
* @return Always returns 0
* @throws HiveException
*/
private int dropDatabase(Hive db, DropDatabaseDesc dropDb)
throws HiveException {
try {
db.dropDatabase(dropDb.getDatabaseName(), true, dropDb.getIfExists(), dropDb.isCasdade());
}
catch (NoSuchObjectException ex) {
throw new HiveException(ex, ErrorMsg.DATABASE_NOT_EXISTS, dropDb.getDatabaseName());
}
return 0;
}
/**
* Switch to a different Database
* @param db
* @param switchDb
* @return Always returns 0
* @throws HiveException
*/
private int switchDatabase(Hive db, SwitchDatabaseDesc switchDb)
throws HiveException {
String dbName = switchDb.getDatabaseName();
if (!db.databaseExists(dbName)) {
throw new HiveException(ErrorMsg.DATABASE_NOT_EXISTS, dbName);
}
SessionState.get().setCurrentDatabase(dbName);
// set database specific parameters
Database database = db.getDatabase(dbName);
assert(database != null);
Map dbParams = database.getParameters();
if (dbParams != null) {
for (HiveConf.ConfVars var: HiveConf.dbVars) {
String newValue = dbParams.get(var.varname);
if (newValue != null) {
LOG.info("Changing " + var.varname +
" from " + conf.getVar(var) + " to " + newValue);
conf.setVar(var, newValue);
}
}
}
return 0;
}
/**
* Create a new table.
*
* @param db
* The database in question.
* @param crtTbl
* This is the table we're creating.
* @return Returns 0 when execution succeeds and above 0 if it fails.
* @throws HiveException
* Throws this exception if an unexpected error occurs.
*/
private int createTable(Hive db, CreateTableDesc crtTbl) throws HiveException {
// create the table
Table tbl;
if (crtTbl.getDatabaseName() == null || (crtTbl.getTableName().contains("."))){
tbl = db.newTable(crtTbl.getTableName());
}else {
tbl = new Table(crtTbl.getDatabaseName(),crtTbl.getTableName());
}
if (crtTbl.getTblProps() != null) {
tbl.getTTable().getParameters().putAll(crtTbl.getTblProps());
}
if (crtTbl.getPartCols() != null) {
tbl.setPartCols(crtTbl.getPartCols());
}
if (crtTbl.getNumBuckets() != -1) {
tbl.setNumBuckets(crtTbl.getNumBuckets());
}
if (crtTbl.getStorageHandler() != null) {
tbl.setProperty(
org.apache.hadoop.hive.metastore.api.hive_metastoreConstants.META_TABLE_STORAGE,
crtTbl.getStorageHandler());
}
HiveStorageHandler storageHandler = tbl.getStorageHandler();
/*
* We use LazySimpleSerDe by default.
*
* If the user didn't specify a SerDe, and any of the columns are not simple
* types, we will have to use DynamicSerDe instead.
*/
if (crtTbl.getSerName() == null) {
if (storageHandler == null) {
LOG.info("Default to LazySimpleSerDe for table " + crtTbl.getTableName());
tbl.setSerializationLib(org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe.class.getName());
} else {
String serDeClassName = storageHandler.getSerDeClass().getName();
LOG.info("Use StorageHandler-supplied " + serDeClassName
+ " for table " + crtTbl.getTableName());
tbl.setSerializationLib(serDeClassName);
}
} else {
// let's validate that the serde exists
validateSerDe(crtTbl.getSerName());
tbl.setSerializationLib(crtTbl.getSerName());
}
if (crtTbl.getFieldDelim() != null) {
tbl.setSerdeParam(serdeConstants.FIELD_DELIM, crtTbl.getFieldDelim());
tbl.setSerdeParam(serdeConstants.SERIALIZATION_FORMAT, crtTbl.getFieldDelim());
}
if (crtTbl.getFieldEscape() != null) {
tbl.setSerdeParam(serdeConstants.ESCAPE_CHAR, crtTbl.getFieldEscape());
}
if (crtTbl.getCollItemDelim() != null) {
tbl.setSerdeParam(serdeConstants.COLLECTION_DELIM, crtTbl.getCollItemDelim());
}
if (crtTbl.getMapKeyDelim() != null) {
tbl.setSerdeParam(serdeConstants.MAPKEY_DELIM, crtTbl.getMapKeyDelim());
}
if (crtTbl.getLineDelim() != null) {
tbl.setSerdeParam(serdeConstants.LINE_DELIM, crtTbl.getLineDelim());
}
if (crtTbl.getNullFormat() != null) {
tbl.setSerdeParam(serdeConstants.SERIALIZATION_NULL_FORMAT, crtTbl.getNullFormat());
}
if (crtTbl.getSerdeProps() != null) {
Iterator> iter = crtTbl.getSerdeProps().entrySet()
.iterator();
while (iter.hasNext()) {
Entry m = iter.next();
tbl.setSerdeParam(m.getKey(), m.getValue());
}
}
if (crtTbl.getCols() != null) {
tbl.setFields(crtTbl.getCols());
}
if (crtTbl.getBucketCols() != null) {
tbl.setBucketCols(crtTbl.getBucketCols());
}
if (crtTbl.getSortCols() != null) {
tbl.setSortCols(crtTbl.getSortCols());
}
if (crtTbl.getComment() != null) {
tbl.setProperty("comment", crtTbl.getComment());
}
if (crtTbl.getLocation() != null) {
tbl.setDataLocation(new Path(crtTbl.getLocation()));
}
if (crtTbl.getSkewedColNames() != null) {
tbl.setSkewedColNames(crtTbl.getSkewedColNames());
}
if (crtTbl.getSkewedColValues() != null) {
tbl.setSkewedColValues(crtTbl.getSkewedColValues());
}
tbl.getTTable().setTemporary(crtTbl.isTemporary());
tbl.setStoredAsSubDirectories(crtTbl.isStoredAsSubDirectories());
tbl.setInputFormatClass(crtTbl.getInputFormat());
tbl.setOutputFormatClass(crtTbl.getOutputFormat());
// only persist input/output format to metadata when it is explicitly specified.
// Otherwise, load lazily via StorageHandler at query time.
if (crtTbl.getInputFormat() != null && !crtTbl.getInputFormat().isEmpty()) {
tbl.getTTable().getSd().setInputFormat(tbl.getInputFormatClass().getName());
}
if (crtTbl.getOutputFormat() != null && !crtTbl.getOutputFormat().isEmpty()) {
tbl.getTTable().getSd().setOutputFormat(tbl.getOutputFormatClass().getName());
}
if (!Utilities.isDefaultNameNode(conf) && doesTableNeedLocation(tbl)) {
// If location is specified - ensure that it is a full qualified name
makeLocationQualified(tbl.getDbName(), tbl.getTTable().getSd(), tbl.getTableName());
}
if (crtTbl.isExternal()) {
tbl.setProperty("EXTERNAL", "TRUE");
tbl.setTableType(TableType.EXTERNAL_TABLE);
}
// If the sorted columns is a superset of bucketed columns, store this fact.
// It can be later used to
// optimize some group-by queries. Note that, the order does not matter as
// long as it in the first
// 'n' columns where 'n' is the length of the bucketed columns.
if ((tbl.getBucketCols() != null) && (tbl.getSortCols() != null)) {
List bucketCols = tbl.getBucketCols();
List sortCols = tbl.getSortCols();
if ((sortCols.size() > 0) && (sortCols.size() >= bucketCols.size())) {
boolean found = true;
Iterator iterBucketCols = bucketCols.iterator();
while (iterBucketCols.hasNext()) {
String bucketCol = iterBucketCols.next();
boolean colFound = false;
for (int i = 0; i < bucketCols.size(); i++) {
if (bucketCol.equals(sortCols.get(i).getCol())) {
colFound = true;
break;
}
}
if (colFound == false) {
found = false;
break;
}
}
if (found) {
tbl.setProperty("SORTBUCKETCOLSPREFIX", "TRUE");
}
}
}
// create the table
if (crtTbl.getReplaceMode()){
// replace-mode creates are really alters using CreateTableDesc.
try {
db.alterTable(tbl.getDbName()+"."+tbl.getTableName(),tbl);
} catch (InvalidOperationException e) {
throw new HiveException("Unable to alter table. " + e.getMessage(), e);
}
} else {
db.createTable(tbl, crtTbl.getIfNotExists());
}
work.getOutputs().add(new WriteEntity(tbl, WriteEntity.WriteType.DDL_NO_LOCK));
return 0;
}
/**
* Create a new table like an existing table.
*
* @param db
* The database in question.
* @param crtTbl
* This is the table we're creating.
* @return Returns 0 when execution succeeds and above 0 if it fails.
* @throws HiveException
* Throws this exception if an unexpected error occurs.
*/
private int createTableLike(Hive db, CreateTableLikeDesc crtTbl) throws Exception {
// Get the existing table
Table oldtbl = db.getTable(crtTbl.getLikeTableName());
Table tbl;
if (oldtbl.getTableType() == TableType.VIRTUAL_VIEW) {
String targetTableName = crtTbl.getTableName();
tbl=db.newTable(targetTableName);
if (crtTbl.getTblProps() != null) {
tbl.getTTable().getParameters().putAll(crtTbl.getTblProps());
}
tbl.setTableType(TableType.MANAGED_TABLE);
if (crtTbl.isExternal()) {
tbl.setProperty("EXTERNAL", "TRUE");
tbl.setTableType(TableType.EXTERNAL_TABLE);
}
tbl.setFields(oldtbl.getCols());
tbl.setPartCols(oldtbl.getPartCols());
if (crtTbl.getDefaultSerName() == null) {
LOG.info("Default to LazySimpleSerDe for table " + crtTbl.getTableName());
tbl.setSerializationLib(org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe.class.getName());
} else {
// let's validate that the serde exists
validateSerDe(crtTbl.getDefaultSerName());
tbl.setSerializationLib(crtTbl.getDefaultSerName());
}
if (crtTbl.getDefaultSerdeProps() != null) {
Iterator> iter = crtTbl.getDefaultSerdeProps().entrySet()
.iterator();
while (iter.hasNext()) {
Entry m = iter.next();
tbl.setSerdeParam(m.getKey(), m.getValue());
}
}
tbl.setInputFormatClass(crtTbl.getDefaultInputFormat());
tbl.setOutputFormatClass(crtTbl.getDefaultOutputFormat());
tbl.getTTable().getSd().setInputFormat(
tbl.getInputFormatClass().getName());
tbl.getTTable().getSd().setOutputFormat(
tbl.getOutputFormatClass().getName());
} else {
tbl=oldtbl;
// find out database name and table name of target table
String targetTableName = crtTbl.getTableName();
String[] names = Utilities.getDbTableName(targetTableName);
tbl.setDbName(names[0]);
tbl.setTableName(names[1]);
// using old table object, hence reset the owner to current user for new table.
tbl.setOwner(SessionState.getUserFromAuthenticator());
if (crtTbl.getLocation() != null) {
tbl.setDataLocation(new Path(crtTbl.getLocation()));
} else {
tbl.unsetDataLocation();
}
Class serdeClass = oldtbl.getDeserializerClass();
Map params = tbl.getParameters();
// We should copy only those table parameters that are specified in the config.
SerDeSpec spec = AnnotationUtils.getAnnotation(serdeClass, SerDeSpec.class);
String paramsStr = HiveConf.getVar(conf, HiveConf.ConfVars.DDL_CTL_PARAMETERS_WHITELIST);
Set retainer = new HashSet();
if (spec != null && spec.schemaProps() != null) {
retainer.addAll(Arrays.asList(spec.schemaProps()));
}
if (paramsStr != null) {
retainer.addAll(Arrays.asList(paramsStr.split(",")));
}
if (!retainer.isEmpty()) {
params.keySet().retainAll(retainer);
} else {
params.clear();
}
if (crtTbl.getTblProps() != null) {
params.putAll(crtTbl.getTblProps());
}
if (crtTbl.isUserStorageFormat()) {
tbl.setInputFormatClass(crtTbl.getDefaultInputFormat());
tbl.setOutputFormatClass(crtTbl.getDefaultOutputFormat());
tbl.getTTable().getSd().setInputFormat(
tbl.getInputFormatClass().getName());
tbl.getTTable().getSd().setOutputFormat(
tbl.getOutputFormatClass().getName());
if (crtTbl.getDefaultSerName() == null) {
LOG.info("Default to LazySimpleSerDe for like table " + crtTbl.getTableName());
tbl.setSerializationLib(org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe.class.getName());
} else {
// let's validate that the serde exists
validateSerDe(crtTbl.getDefaultSerName());
tbl.setSerializationLib(crtTbl.getDefaultSerName());
}
}
tbl.getTTable().setTemporary(crtTbl.isTemporary());
if (crtTbl.isExternal()) {
tbl.setProperty("EXTERNAL", "TRUE");
tbl.setTableType(TableType.EXTERNAL_TABLE);
} else {
tbl.getParameters().remove("EXTERNAL");
}
}
if (!Utilities.isDefaultNameNode(conf)) {
// If location is specified - ensure that it is a full qualified name
makeLocationQualified(tbl.getDbName(), tbl.getTTable().getSd(), tbl.getTableName());
}
// create the table
db.createTable(tbl, crtTbl.getIfNotExists());
work.getOutputs().add(new WriteEntity(tbl, WriteEntity.WriteType.DDL_NO_LOCK));
return 0;
}
/**
* Create a new view.
*
* @param db
* The database in question.
* @param crtView
* This is the view we're creating.
* @return Returns 0 when execution succeeds and above 0 if it fails.
* @throws HiveException
* Throws this exception if an unexpected error occurs.
*/
private int createView(Hive db, CreateViewDesc crtView) throws HiveException {
Table oldview = db.getTable(crtView.getViewName(), false);
if (crtView.getOrReplace() && oldview != null) {
// replace existing view
// remove the existing partition columns from the field schema
oldview.setViewOriginalText(crtView.getViewOriginalText());
oldview.setViewExpandedText(crtView.getViewExpandedText());
oldview.setFields(crtView.getSchema());
if (crtView.getComment() != null) {
oldview.setProperty("comment", crtView.getComment());
}
if (crtView.getTblProps() != null) {
oldview.getTTable().getParameters().putAll(crtView.getTblProps());
}
oldview.setPartCols(crtView.getPartCols());
oldview.checkValidity();
try {
db.alterTable(crtView.getViewName(), oldview);
} catch (InvalidOperationException e) {
throw new HiveException(e);
}
work.getOutputs().add(new WriteEntity(oldview, WriteEntity.WriteType.DDL_NO_LOCK));
} else {
// create new view
Table tbl = db.newTable(crtView.getViewName());
tbl.setTableType(TableType.VIRTUAL_VIEW);
tbl.setSerializationLib(null);
tbl.clearSerDeInfo();
tbl.setViewOriginalText(crtView.getViewOriginalText());
tbl.setViewExpandedText(crtView.getViewExpandedText());
tbl.setFields(crtView.getSchema());
if (crtView.getComment() != null) {
tbl.setProperty("comment", crtView.getComment());
}
if (crtView.getTblProps() != null) {
tbl.getTTable().getParameters().putAll(crtView.getTblProps());
}
if (crtView.getPartCols() != null) {
tbl.setPartCols(crtView.getPartCols());
}
db.createTable(tbl, crtView.getIfNotExists());
work.getOutputs().add(new WriteEntity(tbl, WriteEntity.WriteType.DDL_NO_LOCK));
}
return 0;
}
private int truncateTable(Hive db, TruncateTableDesc truncateTableDesc) throws HiveException {
if (truncateTableDesc.getColumnIndexes() != null) {
ColumnTruncateWork truncateWork = new ColumnTruncateWork(
truncateTableDesc.getColumnIndexes(), truncateTableDesc.getInputDir(),
truncateTableDesc.getOutputDir());
truncateWork.setListBucketingCtx(truncateTableDesc.getLbCtx());
truncateWork.setMapperCannotSpanPartns(true);
DriverContext driverCxt = new DriverContext();
ColumnTruncateTask taskExec = new ColumnTruncateTask();
taskExec.initialize(db.getConf(), null, driverCxt);
taskExec.setWork(truncateWork);
taskExec.setQueryPlan(this.getQueryPlan());
return taskExec.execute(driverCxt);
}
String tableName = truncateTableDesc.getTableName();
Map partSpec = truncateTableDesc.getPartSpec();
Table table = db.getTable(tableName, true);
try {
// this is not transactional
HadoopShims shim = ShimLoader.getHadoopShims();
for (Path location : getLocations(db, table, partSpec)) {
FileSystem fs = location.getFileSystem(conf);
HdfsFileStatus fullFileStatus = shim.getFullFileStatus(conf, fs, location);
fs.delete(location, true);
fs.mkdirs(location);
try {
shim.setFullFileStatus(conf, fullFileStatus, fs, location);
} catch (Exception e) {
LOG.warn("Error setting permissions of " + location, e);
}
}
} catch (Exception e) {
throw new HiveException(e, ErrorMsg.GENERIC_ERROR);
}
return 0;
}
private int exchangeTablePartition(Hive db,
AlterTableExchangePartition exchangePartition) throws HiveException {
Map partitionSpecs = exchangePartition.getPartitionSpecs();
Table destTable = exchangePartition.getDestinationTable();
Table sourceTable = exchangePartition.getSourceTable();
db.exchangeTablePartitions(partitionSpecs, sourceTable.getDbName(),
sourceTable.getTableName(),destTable.getDbName(),
destTable.getTableName());
return 0;
}
private List getLocations(Hive db, Table table, Map partSpec)
throws HiveException, InvalidOperationException {
List locations = new ArrayList();
if (partSpec == null) {
if (table.isPartitioned()) {
for (Partition partition : db.getPartitions(table)) {
locations.add(partition.getDataLocation());
if (needToUpdateStats(partition.getParameters())) {
db.alterPartition(table.getDbName(), table.getTableName(), partition);
}
}
} else {
locations.add(table.getPath());
if (needToUpdateStats(table.getParameters())) {
db.alterTable(table.getDbName()+"."+table.getTableName(), table);
}
}
} else {
for (Partition partition : db.getPartitionsByNames(table, partSpec)) {
locations.add(partition.getDataLocation());
if (needToUpdateStats(partition.getParameters())) {
db.alterPartition(table.getDbName(), table.getTableName(), partition);
}
}
}
return locations;
}
private boolean needToUpdateStats(Map props) {
if (null == props) {
return false;
}
boolean statsPresent = false;
for (String stat : StatsSetupConst.supportedStats) {
String statVal = props.get(stat);
if (statVal != null && Long.parseLong(statVal) > 0) {
statsPresent = true;
props.put(stat, "0");
props.put(StatsSetupConst.COLUMN_STATS_ACCURATE, "false");
}
}
return statsPresent;
}
private String escapeHiveCommand(String str) {
StringBuilder sb = new StringBuilder();
for (int i = 0; i < str.length(); i ++) {
char c = str.charAt(i);
if (c == '\'' || c == ';') {
sb.append('\\');
}
sb.append(c);
}
return sb.toString();
}
@Override
public StageType getType() {
return StageType.DDL;
}
@Override
public String getName() {
return "DDL";
}
/**
* Make location in specified sd qualified.
*
* @param databaseName
* Database name.
* @param sd
* Storage descriptor.
* @param name
* Object name.
*/
private void makeLocationQualified(String databaseName, StorageDescriptor sd, String name)
throws HiveException {
Path path = null;
if (!sd.isSetLocation())
{
// Location is not set, leave it as-is if this is not a default DB
if (databaseName.equalsIgnoreCase(MetaStoreUtils.DEFAULT_DATABASE_NAME))
{
// Default database name path is always ignored, use METASTOREWAREHOUSE and object name
// instead
path = new Path(HiveConf.getVar(conf, HiveConf.ConfVars.METASTOREWAREHOUSE), name.toLowerCase());
}
}
else
{
path = new Path(sd.getLocation());
}
if (path != null)
{
sd.setLocation(Utilities.getQualifiedPath(conf, path));
}
}
/**
* Make qualified location for an index .
*
* @param crtIndex
* Create index descriptor.
* @param name
* Object name.
*/
private void makeLocationQualified(CreateIndexDesc crtIndex, String name) throws HiveException
{
Path path = null;
if (crtIndex.getLocation() == null) {
// Location is not set, leave it as-is if index doesn't belong to default DB
// Currently all indexes are created in current DB only
if (Utilities.getDatabaseName(name).equalsIgnoreCase(MetaStoreUtils.DEFAULT_DATABASE_NAME)) {
// Default database name path is always ignored, use METASTOREWAREHOUSE and object name
// instead
String warehouse = HiveConf.getVar(conf, ConfVars.METASTOREWAREHOUSE);
String tableName = Utilities.getTableName(name);
path = new Path(warehouse, tableName.toLowerCase());
}
}
else {
path = new Path(crtIndex.getLocation());
}
if (path != null) {
crtIndex.setLocation(Utilities.getQualifiedPath(conf, path));
}
}
/**
* Make qualified location for a database .
*
* @param database
* Database.
*/
private void makeLocationQualified(Database database) throws HiveException {
if (database.isSetLocationUri()) {
database.setLocationUri(Utilities.getQualifiedPath(conf, new Path(database.getLocationUri())));
}
else {
// Location is not set we utilize METASTOREWAREHOUSE together with database name
database.setLocationUri(
Utilities.getQualifiedPath(conf, new Path(HiveConf.getVar(conf, HiveConf.ConfVars.METASTOREWAREHOUSE),
database.getName().toLowerCase() + ".db")));
}
}
private static boolean doesTableNeedLocation(Table tbl) {
// If we are ok with breaking compatibility of existing 3rd party StorageHandlers,
// this method could be moved to the HiveStorageHandler interface.
boolean retval = true;
if (tbl.getStorageHandler() != null) {
retval = !tbl.getStorageHandler().toString().equals(
"org.apache.hadoop.hive.hbase.HBaseStorageHandler");
}
return retval;
}
}
