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org.apache.hadoop.hive.ql.parse.DDLSemanticAnalyzer Maven / Gradle / Ivy
/**
* 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.parse;
import static org.apache.hadoop.hive.ql.parse.HiveParser.TOK_DATABASELOCATION;
import static org.apache.hadoop.hive.ql.parse.HiveParser.TOK_DATABASEPROPERTIES;
import java.io.Serializable;
import java.net.URI;
import java.net.URISyntaxException;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Iterator;
import java.util.LinkedHashMap;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
import java.util.Properties;
import java.util.Set;
import org.antlr.runtime.tree.CommonTree;
import org.antlr.runtime.tree.Tree;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.hive.common.FileUtils;
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.TableType;
import org.apache.hadoop.hive.metastore.Warehouse;
import org.apache.hadoop.hive.metastore.api.Database;
import org.apache.hadoop.hive.metastore.api.FieldSchema;
import org.apache.hadoop.hive.metastore.api.Index;
import org.apache.hadoop.hive.metastore.api.MetaException;
import org.apache.hadoop.hive.metastore.api.Order;
import org.apache.hadoop.hive.metastore.api.SkewedInfo;
import org.apache.hadoop.hive.ql.Driver;
import org.apache.hadoop.hive.ql.ErrorMsg;
import org.apache.hadoop.hive.ql.exec.ArchiveUtils;
import org.apache.hadoop.hive.ql.exec.ColumnStatsUpdateTask;
import org.apache.hadoop.hive.ql.exec.FetchTask;
import org.apache.hadoop.hive.ql.exec.FunctionRegistry;
import org.apache.hadoop.hive.ql.exec.Task;
import org.apache.hadoop.hive.ql.exec.TaskFactory;
import org.apache.hadoop.hive.ql.exec.Utilities;
import org.apache.hadoop.hive.ql.hooks.ReadEntity;
import org.apache.hadoop.hive.ql.hooks.WriteEntity;
import org.apache.hadoop.hive.ql.index.HiveIndex;
import org.apache.hadoop.hive.ql.index.HiveIndex.IndexType;
import org.apache.hadoop.hive.ql.index.HiveIndexHandler;
import org.apache.hadoop.hive.ql.io.IgnoreKeyTextOutputFormat;
import org.apache.hadoop.hive.ql.io.RCFileInputFormat;
import org.apache.hadoop.hive.ql.io.orc.OrcInputFormat;
import org.apache.hadoop.hive.ql.lib.Node;
import org.apache.hadoop.hive.ql.lockmgr.HiveTxnManager;
import org.apache.hadoop.hive.ql.lockmgr.LockException;
import org.apache.hadoop.hive.ql.lockmgr.TxnManagerFactory;
import org.apache.hadoop.hive.ql.metadata.Hive;
import org.apache.hadoop.hive.ql.metadata.HiveException;
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.Table;
import org.apache.hadoop.hive.ql.parse.authorization.AuthorizationParseUtils;
import org.apache.hadoop.hive.ql.parse.authorization.HiveAuthorizationTaskFactory;
import org.apache.hadoop.hive.ql.parse.authorization.HiveAuthorizationTaskFactoryImpl;
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.AlterIndexDesc.AlterIndexTypes;
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.ColumnStatsDesc;
import org.apache.hadoop.hive.ql.plan.ColumnStatsUpdateWork;
import org.apache.hadoop.hive.ql.plan.CreateDatabaseDesc;
import org.apache.hadoop.hive.ql.plan.CreateIndexDesc;
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.ExprNodeColumnDesc;
import org.apache.hadoop.hive.ql.plan.ExprNodeConstantDesc;
import org.apache.hadoop.hive.ql.plan.ExprNodeDesc;
import org.apache.hadoop.hive.ql.plan.ExprNodeGenericFuncDesc;
import org.apache.hadoop.hive.ql.plan.FetchWork;
import org.apache.hadoop.hive.ql.plan.ListBucketingCtx;
import org.apache.hadoop.hive.ql.plan.LoadTableDesc;
import org.apache.hadoop.hive.ql.plan.LockDatabaseDesc;
import org.apache.hadoop.hive.ql.plan.LockTableDesc;
import org.apache.hadoop.hive.ql.plan.MoveWork;
import org.apache.hadoop.hive.ql.plan.MsckDesc;
import org.apache.hadoop.hive.ql.plan.PlanUtils;
import org.apache.hadoop.hive.ql.plan.PrincipalDesc;
import org.apache.hadoop.hive.ql.plan.RenamePartitionDesc;
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.StatsWork;
import org.apache.hadoop.hive.ql.plan.SwitchDatabaseDesc;
import org.apache.hadoop.hive.ql.plan.TableDesc;
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.session.SessionState;
import org.apache.hadoop.hive.serde.serdeConstants;
import org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe;
import org.apache.hadoop.hive.serde2.objectinspector.ObjectInspectorConverters;
import org.apache.hadoop.hive.serde2.objectinspector.ObjectInspectorConverters.Converter;
import org.apache.hadoop.hive.serde2.typeinfo.CharTypeInfo;
import org.apache.hadoop.hive.serde2.typeinfo.DecimalTypeInfo;
import org.apache.hadoop.hive.serde2.typeinfo.PrimitiveTypeInfo;
import org.apache.hadoop.hive.serde2.typeinfo.TypeInfoFactory;
import org.apache.hadoop.hive.serde2.typeinfo.TypeInfoUtils;
import org.apache.hadoop.hive.serde2.typeinfo.VarcharTypeInfo;
import org.apache.hadoop.mapred.InputFormat;
import org.apache.hadoop.mapred.TextInputFormat;
import org.apache.hadoop.util.StringUtils;
import com.google.common.collect.Lists;
/**
* DDLSemanticAnalyzer.
*
*/
public class DDLSemanticAnalyzer extends BaseSemanticAnalyzer {
private static final Log LOG = LogFactory.getLog(DDLSemanticAnalyzer.class);
private static final Map TokenToTypeName = new HashMap();
private final Set reservedPartitionValues;
private final HiveAuthorizationTaskFactory hiveAuthorizationTaskFactory;
static {
TokenToTypeName.put(HiveParser.TOK_BOOLEAN, serdeConstants.BOOLEAN_TYPE_NAME);
TokenToTypeName.put(HiveParser.TOK_TINYINT, serdeConstants.TINYINT_TYPE_NAME);
TokenToTypeName.put(HiveParser.TOK_SMALLINT, serdeConstants.SMALLINT_TYPE_NAME);
TokenToTypeName.put(HiveParser.TOK_INT, serdeConstants.INT_TYPE_NAME);
TokenToTypeName.put(HiveParser.TOK_BIGINT, serdeConstants.BIGINT_TYPE_NAME);
TokenToTypeName.put(HiveParser.TOK_FLOAT, serdeConstants.FLOAT_TYPE_NAME);
TokenToTypeName.put(HiveParser.TOK_DOUBLE, serdeConstants.DOUBLE_TYPE_NAME);
TokenToTypeName.put(HiveParser.TOK_STRING, serdeConstants.STRING_TYPE_NAME);
TokenToTypeName.put(HiveParser.TOK_CHAR, serdeConstants.CHAR_TYPE_NAME);
TokenToTypeName.put(HiveParser.TOK_VARCHAR, serdeConstants.VARCHAR_TYPE_NAME);
TokenToTypeName.put(HiveParser.TOK_BINARY, serdeConstants.BINARY_TYPE_NAME);
TokenToTypeName.put(HiveParser.TOK_DATE, serdeConstants.DATE_TYPE_NAME);
TokenToTypeName.put(HiveParser.TOK_DATETIME, serdeConstants.DATETIME_TYPE_NAME);
TokenToTypeName.put(HiveParser.TOK_TIMESTAMP, serdeConstants.TIMESTAMP_TYPE_NAME);
TokenToTypeName.put(HiveParser.TOK_DECIMAL, serdeConstants.DECIMAL_TYPE_NAME);
}
public static String getTypeName(ASTNode node) throws SemanticException {
int token = node.getType();
String typeName;
// datetime type isn't currently supported
if (token == HiveParser.TOK_DATETIME) {
throw new SemanticException(ErrorMsg.UNSUPPORTED_TYPE.getMsg());
}
switch (token) {
case HiveParser.TOK_CHAR:
CharTypeInfo charTypeInfo = ParseUtils.getCharTypeInfo(node);
typeName = charTypeInfo.getQualifiedName();
break;
case HiveParser.TOK_VARCHAR:
VarcharTypeInfo varcharTypeInfo = ParseUtils.getVarcharTypeInfo(node);
typeName = varcharTypeInfo.getQualifiedName();
break;
case HiveParser.TOK_DECIMAL:
DecimalTypeInfo decTypeInfo = ParseUtils.getDecimalTypeTypeInfo(node);
typeName = decTypeInfo.getQualifiedName();
break;
default:
typeName = TokenToTypeName.get(token);
}
return typeName;
}
static class TablePartition {
String tableName;
HashMap partSpec = null;
public TablePartition() {
}
public TablePartition(ASTNode tblPart) throws SemanticException {
tableName = getDotName((getQualifiedTableName((ASTNode) tblPart.getChild(0))));
if (tblPart.getChildCount() > 1) {
ASTNode part = (ASTNode) tblPart.getChild(1);
if (part.getToken().getType() == HiveParser.TOK_PARTSPEC) {
this.partSpec = DDLSemanticAnalyzer.getPartSpec(part);
}
}
}
}
public DDLSemanticAnalyzer(HiveConf conf) throws SemanticException {
this(conf, createHiveDB(conf));
}
public DDLSemanticAnalyzer(HiveConf conf, Hive db) throws SemanticException {
super(conf, db);
reservedPartitionValues = new HashSet();
// Partition can't have this name
reservedPartitionValues.add(HiveConf.getVar(conf, ConfVars.DEFAULTPARTITIONNAME));
reservedPartitionValues.add(HiveConf.getVar(conf, ConfVars.DEFAULT_ZOOKEEPER_PARTITION_NAME));
// Partition value can't end in this suffix
reservedPartitionValues.add(HiveConf.getVar(conf, ConfVars.METASTORE_INT_ORIGINAL));
reservedPartitionValues.add(HiveConf.getVar(conf, ConfVars.METASTORE_INT_ARCHIVED));
reservedPartitionValues.add(HiveConf.getVar(conf, ConfVars.METASTORE_INT_EXTRACTED));
hiveAuthorizationTaskFactory = new HiveAuthorizationTaskFactoryImpl(conf, db);
}
@Override
public void analyzeInternal(ASTNode input) throws SemanticException {
ASTNode ast = input;
switch (ast.getType()) {
case HiveParser.TOK_ALTERTABLE: {
ast = (ASTNode) input.getChild(1);
String[] qualified = getQualifiedTableName((ASTNode) input.getChild(0));
String tableName = getDotName(qualified);
HashMap partSpec = DDLSemanticAnalyzer.getPartSpec((ASTNode) input.getChild(2));
if (ast.getType() == HiveParser.TOK_ALTERTABLE_RENAME) {
analyzeAlterTableRename(qualified, ast, false);
} else if (ast.getType() == HiveParser.TOK_ALTERTABLE_TOUCH) {
analyzeAlterTableTouch(qualified, ast);
} else if (ast.getType() == HiveParser.TOK_ALTERTABLE_ARCHIVE) {
analyzeAlterTableArchive(qualified, ast, false);
} else if (ast.getType() == HiveParser.TOK_ALTERTABLE_UNARCHIVE) {
analyzeAlterTableArchive(qualified, ast, true);
} else if (ast.getType() == HiveParser.TOK_ALTERTABLE_ADDCOLS) {
analyzeAlterTableModifyCols(qualified, ast, partSpec, AlterTableTypes.ADDCOLS);
} else if (ast.getType() == HiveParser.TOK_ALTERTABLE_REPLACECOLS) {
analyzeAlterTableModifyCols(qualified, ast, partSpec, AlterTableTypes.REPLACECOLS);
} else if (ast.getType() == HiveParser.TOK_ALTERTABLE_RENAMECOL) {
analyzeAlterTableRenameCol(qualified, ast, partSpec);
} else if (ast.getType() == HiveParser.TOK_ALTERTABLE_ADDPARTS) {
analyzeAlterTableAddParts(qualified, ast, false);
} else if (ast.getType() == HiveParser.TOK_ALTERTABLE_DROPPARTS) {
analyzeAlterTableDropParts(qualified, ast, false);
} else if (ast.getType() == HiveParser.TOK_ALTERTABLE_PARTCOLTYPE) {
analyzeAlterTablePartColType(qualified, ast);
} else if (ast.getType() == HiveParser.TOK_ALTERTABLE_PROPERTIES) {
analyzeAlterTableProps(qualified, ast, false, false);
} else if (ast.getType() == HiveParser.TOK_ALTERTABLE_DROPPROPERTIES) {
analyzeAlterTableProps(qualified, ast, false, true);
} else if (ast.getType() == HiveParser.TOK_ALTERTABLE_SKEWED) {
analyzeAltertableSkewedby(qualified, ast);
} else if (ast.getType() == HiveParser.TOK_ALTERTABLE_EXCHANGEPARTITION) {
analyzeExchangePartition(qualified, ast);
} else if (ast.getToken().getType() == HiveParser.TOK_ALTERTABLE_FILEFORMAT) {
analyzeAlterTableFileFormat(ast, tableName, partSpec);
} else if (ast.getToken().getType() == HiveParser.TOK_ALTERTABLE_PROTECTMODE) {
analyzeAlterTableProtectMode(ast, tableName, partSpec);
} else if (ast.getToken().getType() == HiveParser.TOK_ALTERTABLE_LOCATION) {
analyzeAlterTableLocation(ast, tableName, partSpec);
} else if (ast.getToken().getType() == HiveParser.TOK_ALTERTABLE_MERGEFILES) {
analyzeAlterTablePartMergeFiles(ast, tableName, partSpec);
} else if (ast.getToken().getType() == HiveParser.TOK_ALTERTABLE_SERIALIZER) {
analyzeAlterTableSerde(ast, tableName, partSpec);
} else if (ast.getToken().getType() == HiveParser.TOK_ALTERTABLE_SERDEPROPERTIES) {
analyzeAlterTableSerdeProps(ast, tableName, partSpec);
} else if (ast.getToken().getType() == HiveParser.TOK_ALTERTABLE_RENAMEPART) {
analyzeAlterTableRenamePart(ast, tableName, partSpec);
} else if (ast.getToken().getType() == HiveParser.TOK_ALTERTABLE_SKEWED_LOCATION) {
analyzeAlterTableSkewedLocation(ast, tableName, partSpec);
} else if (ast.getToken().getType() == HiveParser.TOK_ALTERTABLE_BUCKETS) {
analyzeAlterTableBucketNum(ast, tableName, partSpec);
} else if (ast.getToken().getType() == HiveParser.TOK_ALTERTABLE_CLUSTER_SORT) {
analyzeAlterTableClusterSort(ast, tableName, partSpec);
} else if (ast.getToken().getType() == HiveParser.TOK_ALTERTABLE_COMPACT) {
analyzeAlterTableCompact(ast, tableName, partSpec);
} else if(ast.getToken().getType() == HiveParser.TOK_ALTERTABLE_UPDATECOLSTATS){
analyzeAlterTableUpdateStats(ast, tableName, partSpec);
}
break;
}
case HiveParser.TOK_DROPTABLE:
analyzeDropTable(ast, false);
break;
case HiveParser.TOK_TRUNCATETABLE:
analyzeTruncateTable(ast);
break;
case HiveParser.TOK_CREATEINDEX:
analyzeCreateIndex(ast);
break;
case HiveParser.TOK_DROPINDEX:
analyzeDropIndex(ast);
break;
case HiveParser.TOK_DESCTABLE:
ctx.setResFile(ctx.getLocalTmpPath());
analyzeDescribeTable(ast);
break;
case HiveParser.TOK_SHOWDATABASES:
ctx.setResFile(ctx.getLocalTmpPath());
analyzeShowDatabases(ast);
break;
case HiveParser.TOK_SHOWTABLES:
ctx.setResFile(ctx.getLocalTmpPath());
analyzeShowTables(ast);
break;
case HiveParser.TOK_SHOWCOLUMNS:
ctx.setResFile(ctx.getLocalTmpPath());
analyzeShowColumns(ast);
break;
case HiveParser.TOK_SHOW_TABLESTATUS:
ctx.setResFile(ctx.getLocalTmpPath());
analyzeShowTableStatus(ast);
break;
case HiveParser.TOK_SHOW_TBLPROPERTIES:
ctx.setResFile(ctx.getLocalTmpPath());
analyzeShowTableProperties(ast);
break;
case HiveParser.TOK_SHOWFUNCTIONS:
ctx.setResFile(ctx.getLocalTmpPath());
analyzeShowFunctions(ast);
break;
case HiveParser.TOK_SHOWLOCKS:
ctx.setResFile(ctx.getLocalTmpPath());
analyzeShowLocks(ast);
break;
case HiveParser.TOK_SHOWDBLOCKS:
ctx.setResFile(ctx.getLocalTmpPath());
analyzeShowDbLocks(ast);
break;
case HiveParser.TOK_SHOW_COMPACTIONS:
ctx.setResFile(ctx.getLocalTmpPath());
analyzeShowCompactions(ast);
break;
case HiveParser.TOK_SHOW_TRANSACTIONS:
ctx.setResFile(ctx.getLocalTmpPath());
analyzeShowTxns(ast);
break;
case HiveParser.TOK_SHOWCONF:
ctx.setResFile(ctx.getLocalTmpPath());
analyzeShowConf(ast);
break;
case HiveParser.TOK_DESCFUNCTION:
ctx.setResFile(ctx.getLocalTmpPath());
analyzeDescFunction(ast);
break;
case HiveParser.TOK_DESCDATABASE:
ctx.setResFile(ctx.getLocalTmpPath());
analyzeDescDatabase(ast);
break;
case HiveParser.TOK_MSCK:
ctx.setResFile(ctx.getLocalTmpPath());
analyzeMetastoreCheck(ast);
break;
case HiveParser.TOK_DROPVIEW:
analyzeDropTable(ast, true);
break;
case HiveParser.TOK_ALTERVIEW: {
String[] qualified = getQualifiedTableName((ASTNode) ast.getChild(0));
ast = (ASTNode) ast.getChild(1);
if (ast.getType() == HiveParser.TOK_ALTERVIEW_PROPERTIES) {
analyzeAlterTableProps(qualified, ast, true, false);
} else if (ast.getType() == HiveParser.TOK_ALTERVIEW_DROPPROPERTIES) {
analyzeAlterTableProps(qualified, ast, true, true);
} else if (ast.getType() == HiveParser.TOK_ALTERVIEW_ADDPARTS) {
analyzeAlterTableAddParts(qualified, ast, true);
} else if (ast.getType() == HiveParser.TOK_ALTERVIEW_DROPPARTS) {
analyzeAlterTableDropParts(qualified, ast, true);
} else if (ast.getType() == HiveParser.TOK_ALTERVIEW_RENAME) {
analyzeAlterTableRename(qualified, ast, true);
}
break;
}
case HiveParser.TOK_ALTERINDEX_REBUILD:
analyzeAlterIndexRebuild(ast);
break;
case HiveParser.TOK_ALTERINDEX_PROPERTIES:
analyzeAlterIndexProps(ast);
break;
case HiveParser.TOK_SHOWPARTITIONS:
ctx.setResFile(ctx.getLocalTmpPath());
analyzeShowPartitions(ast);
break;
case HiveParser.TOK_SHOW_CREATETABLE:
ctx.setResFile(ctx.getLocalTmpPath());
analyzeShowCreateTable(ast);
break;
case HiveParser.TOK_SHOWINDEXES:
ctx.setResFile(ctx.getLocalTmpPath());
analyzeShowIndexes(ast);
break;
case HiveParser.TOK_LOCKTABLE:
analyzeLockTable(ast);
break;
case HiveParser.TOK_UNLOCKTABLE:
analyzeUnlockTable(ast);
break;
case HiveParser.TOK_LOCKDB:
analyzeLockDatabase(ast);
break;
case HiveParser.TOK_UNLOCKDB:
analyzeUnlockDatabase(ast);
break;
case HiveParser.TOK_CREATEDATABASE:
analyzeCreateDatabase(ast);
break;
case HiveParser.TOK_DROPDATABASE:
analyzeDropDatabase(ast);
break;
case HiveParser.TOK_SWITCHDATABASE:
analyzeSwitchDatabase(ast);
break;
case HiveParser.TOK_ALTERDATABASE_PROPERTIES:
analyzeAlterDatabaseProperties(ast);
break;
case HiveParser.TOK_ALTERDATABASE_OWNER:
analyzeAlterDatabaseOwner(ast);
break;
case HiveParser.TOK_CREATEROLE:
analyzeCreateRole(ast);
break;
case HiveParser.TOK_DROPROLE:
analyzeDropRole(ast);
break;
case HiveParser.TOK_SHOW_ROLE_GRANT:
ctx.setResFile(ctx.getLocalTmpPath());
analyzeShowRoleGrant(ast);
break;
case HiveParser.TOK_SHOW_ROLE_PRINCIPALS:
ctx.setResFile(ctx.getLocalTmpPath());
analyzeShowRolePrincipals(ast);
break;
case HiveParser.TOK_SHOW_ROLES:
ctx.setResFile(ctx.getLocalTmpPath());
analyzeShowRoles(ast);
break;
case HiveParser.TOK_GRANT_ROLE:
analyzeGrantRevokeRole(true, ast);
break;
case HiveParser.TOK_REVOKE_ROLE:
analyzeGrantRevokeRole(false, ast);
break;
case HiveParser.TOK_GRANT:
analyzeGrant(ast);
break;
case HiveParser.TOK_SHOW_GRANT:
ctx.setResFile(ctx.getLocalTmpPath());
analyzeShowGrant(ast);
break;
case HiveParser.TOK_REVOKE:
analyzeRevoke(ast);
break;
case HiveParser.TOK_SHOW_SET_ROLE:
analyzeSetShowRole(ast);
break;
default:
throw new SemanticException("Unsupported command.");
}
if (fetchTask != null && !rootTasks.isEmpty()) {
rootTasks.get(rootTasks.size() - 1).setFetchSource(true);
}
}
private void analyzeAlterTableUpdateStats(ASTNode ast, String tblName, Map partSpec)
throws SemanticException {
String colName = getUnescapedName((ASTNode) ast.getChild(0));
Map mapProp = getProps((ASTNode) (ast.getChild(1)).getChild(0));
Table tbl = getTable(tblName);
String partName = null;
if (partSpec != null) {
try {
partName = Warehouse.makePartName(partSpec, false);
} catch (MetaException e) {
// TODO Auto-generated catch block
throw new SemanticException("partition " + partSpec.toString()
+ " not found");
}
}
String colType = null;
List cols = tbl.getCols();
for (FieldSchema col : cols) {
if (colName.equalsIgnoreCase(col.getName())) {
colType = col.getType();
break;
}
}
if (colType == null)
throw new SemanticException("column type not found");
ColumnStatsDesc cStatsDesc = new ColumnStatsDesc(tbl.getTableName(),
Arrays.asList(colName), Arrays.asList(colType), partSpec == null);
ColumnStatsUpdateTask cStatsUpdateTask = (ColumnStatsUpdateTask) TaskFactory
.get(new ColumnStatsUpdateWork(cStatsDesc, partName, mapProp), conf);
rootTasks.add(cStatsUpdateTask);
}
private void analyzeSetShowRole(ASTNode ast) throws SemanticException {
switch (ast.getChildCount()) {
case 0:
ctx.setResFile(ctx.getLocalTmpPath());
rootTasks.add(hiveAuthorizationTaskFactory.createShowCurrentRoleTask(
getInputs(), getOutputs(), ctx.getResFile()));
setFetchTask(createFetchTask(RoleDDLDesc.getRoleNameSchema()));
break;
case 1:
rootTasks.add(hiveAuthorizationTaskFactory.createSetRoleTask(
BaseSemanticAnalyzer.unescapeIdentifier(ast.getChild(0).getText()),
getInputs(), getOutputs()));
break;
default:
throw new SemanticException("Internal error. ASTNode expected to have 0 or 1 child. "
+ ast.dump());
}
}
private void analyzeGrantRevokeRole(boolean grant, ASTNode ast) throws SemanticException {
Task task;
if(grant) {
task = hiveAuthorizationTaskFactory.createGrantRoleTask(ast, getInputs(), getOutputs());
} else {
task = hiveAuthorizationTaskFactory.createRevokeRoleTask(ast, getInputs(), getOutputs());
}
if(task != null) {
rootTasks.add(task);
}
}
private void analyzeShowGrant(ASTNode ast) throws SemanticException {
Task task = hiveAuthorizationTaskFactory.
createShowGrantTask(ast, ctx.getResFile(), getInputs(), getOutputs());
if(task != null) {
rootTasks.add(task);
setFetchTask(createFetchTask(ShowGrantDesc.getSchema()));
}
}
private void analyzeGrant(ASTNode ast) throws SemanticException {
Task task = hiveAuthorizationTaskFactory.
createGrantTask(ast, getInputs(), getOutputs());
if(task != null) {
rootTasks.add(task);
}
}
private void analyzeRevoke(ASTNode ast) throws SemanticException {
Task task = hiveAuthorizationTaskFactory.
createRevokeTask(ast, getInputs(), getOutputs());
if(task != null) {
rootTasks.add(task);
}
}
private void analyzeCreateRole(ASTNode ast) throws SemanticException {
Task task = hiveAuthorizationTaskFactory.
createCreateRoleTask(ast, getInputs(), getOutputs());
if(task != null) {
rootTasks.add(task);
}
}
private void analyzeDropRole(ASTNode ast) throws SemanticException {
Task task = hiveAuthorizationTaskFactory.
createDropRoleTask(ast, getInputs(), getOutputs());
if(task != null) {
rootTasks.add(task);
}
}
private void analyzeShowRoleGrant(ASTNode ast) throws SemanticException {
Task task = hiveAuthorizationTaskFactory.
createShowRoleGrantTask(ast, ctx.getResFile(), getInputs(), getOutputs());
if(task != null) {
rootTasks.add(task);
setFetchTask(createFetchTask(RoleDDLDesc.getRoleShowGrantSchema()));
}
}
private void analyzeShowRolePrincipals(ASTNode ast) throws SemanticException {
Task roleDDLTask = (Task) hiveAuthorizationTaskFactory
.createShowRolePrincipalsTask(ast, ctx.getResFile(), getInputs(), getOutputs());
if (roleDDLTask != null) {
rootTasks.add(roleDDLTask);
setFetchTask(createFetchTask(RoleDDLDesc.getShowRolePrincipalsSchema()));
}
}
private void analyzeShowRoles(ASTNode ast) throws SemanticException {
Task roleDDLTask = (Task) hiveAuthorizationTaskFactory
.createShowRolesTask(ast, ctx.getResFile(), getInputs(), getOutputs());
if (roleDDLTask != null) {
rootTasks.add(roleDDLTask);
setFetchTask(createFetchTask(RoleDDLDesc.getRoleNameSchema()));
}
}
private void analyzeAlterDatabaseProperties(ASTNode ast) throws SemanticException {
String dbName = unescapeIdentifier(ast.getChild(0).getText());
Map dbProps = null;
for (int i = 1; i < ast.getChildCount(); i++) {
ASTNode childNode = (ASTNode) ast.getChild(i);
switch (childNode.getToken().getType()) {
case HiveParser.TOK_DATABASEPROPERTIES:
dbProps = DDLSemanticAnalyzer.getProps((ASTNode) childNode.getChild(0));
break;
default:
throw new SemanticException("Unrecognized token in CREATE DATABASE statement");
}
}
AlterDatabaseDesc alterDesc = new AlterDatabaseDesc(dbName, dbProps);
addAlterDbDesc(alterDesc);
}
private void addAlterDbDesc(AlterDatabaseDesc alterDesc) throws SemanticException {
Database database = getDatabase(alterDesc.getDatabaseName());
outputs.add(new WriteEntity(database, WriteEntity.WriteType.DDL_NO_LOCK));
rootTasks.add(TaskFactory.get(new DDLWork(getInputs(), getOutputs(), alterDesc), conf));
}
private void analyzeAlterDatabaseOwner(ASTNode ast) throws SemanticException {
String dbName = getUnescapedName((ASTNode) ast.getChild(0));
PrincipalDesc principalDesc = AuthorizationParseUtils.getPrincipalDesc((ASTNode) ast
.getChild(1));
// The syntax should not allow these fields to be null, but lets verify
String nullCmdMsg = "can't be null in alter database set owner command";
if(principalDesc.getName() == null){
throw new SemanticException("Owner name " + nullCmdMsg);
}
if(principalDesc.getType() == null){
throw new SemanticException("Owner type " + nullCmdMsg);
}
AlterDatabaseDesc alterDesc = new AlterDatabaseDesc(dbName, principalDesc);
addAlterDbDesc(alterDesc);
}
private void analyzeExchangePartition(String[] qualified, ASTNode ast) throws SemanticException {
Table destTable = getTable(qualified);
Table sourceTable = getTable(getUnescapedName((ASTNode)ast.getChild(1)));
// Get the partition specs
Map partSpecs = getPartSpec((ASTNode) ast.getChild(0));
validatePartitionValues(partSpecs);
boolean sameColumns = MetaStoreUtils.compareFieldColumns(
destTable.getAllCols(), sourceTable.getAllCols());
boolean samePartitions = MetaStoreUtils.compareFieldColumns(
destTable.getPartitionKeys(), sourceTable.getPartitionKeys());
if (!sameColumns || !samePartitions) {
throw new SemanticException(ErrorMsg.TABLES_INCOMPATIBLE_SCHEMAS.getMsg());
}
// check if source partition exists
getPartitions(sourceTable, partSpecs, true);
// Verify that the partitions specified are continuous
// If a subpartition value is specified without specifying a partition's value
// then we throw an exception
int counter = isPartitionValueContinuous(sourceTable.getPartitionKeys(), partSpecs);
if (counter < 0) {
throw new SemanticException(
ErrorMsg.PARTITION_VALUE_NOT_CONTINUOUS.getMsg(partSpecs.toString()));
}
List destPartitions = null;
try {
destPartitions = getPartitions(destTable, partSpecs, true);
} catch (SemanticException ex) {
// We should expect a semantic exception being throw as this partition
// should not be present.
}
if (destPartitions != null) {
// If any destination partition is present then throw a Semantic Exception.
throw new SemanticException(ErrorMsg.PARTITION_EXISTS.getMsg(destPartitions.toString()));
}
AlterTableExchangePartition alterTableExchangePartition =
new AlterTableExchangePartition(sourceTable, destTable, partSpecs);
rootTasks.add(TaskFactory.get(new DDLWork(getInputs(), getOutputs(),
alterTableExchangePartition), conf));
}
/**
* @param partitionKeys the list of partition keys of the table
* @param partSpecs the partition specs given by the user
* @return >=0 if no subpartition value is specified without a partition's
* value being specified else it returns -1
*/
private int isPartitionValueContinuous(List partitionKeys,
Map partSpecs) {
int counter = 0;
for (FieldSchema partitionKey : partitionKeys) {
if (partSpecs.containsKey(partitionKey.getName())) {
counter++;
continue;
}
return partSpecs.size() == counter ? counter : -1;
}
return counter;
}
private void analyzeCreateDatabase(ASTNode ast) throws SemanticException {
String dbName = unescapeIdentifier(ast.getChild(0).getText());
boolean ifNotExists = false;
String dbComment = null;
String dbLocation = null;
Map dbProps = null;
for (int i = 1; i < ast.getChildCount(); i++) {
ASTNode childNode = (ASTNode) ast.getChild(i);
switch (childNode.getToken().getType()) {
case HiveParser.TOK_IFNOTEXISTS:
ifNotExists = true;
break;
case HiveParser.TOK_DATABASECOMMENT:
dbComment = unescapeSQLString(childNode.getChild(0).getText());
break;
case TOK_DATABASEPROPERTIES:
dbProps = DDLSemanticAnalyzer.getProps((ASTNode) childNode.getChild(0));
break;
case TOK_DATABASELOCATION:
dbLocation = unescapeSQLString(childNode.getChild(0).getText());
addLocationToOutputs(dbLocation);
break;
default:
throw new SemanticException("Unrecognized token in CREATE DATABASE statement");
}
}
CreateDatabaseDesc createDatabaseDesc =
new CreateDatabaseDesc(dbName, dbComment, dbLocation, ifNotExists);
if (dbProps != null) {
createDatabaseDesc.setDatabaseProperties(dbProps);
}
Database database = new Database(dbName, dbComment, dbLocation, dbProps);
outputs.add(new WriteEntity(database, WriteEntity.WriteType.DDL_NO_LOCK));
rootTasks.add(TaskFactory.get(new DDLWork(getInputs(), getOutputs(),
createDatabaseDesc), conf));
}
private void analyzeDropDatabase(ASTNode ast) throws SemanticException {
String dbName = unescapeIdentifier(ast.getChild(0).getText());
boolean ifExists = false;
boolean ifCascade = false;
if (null != ast.getFirstChildWithType(HiveParser.TOK_IFEXISTS)) {
ifExists = true;
}
if (null != ast.getFirstChildWithType(HiveParser.TOK_CASCADE)) {
ifCascade = true;
}
Database database = getDatabase(dbName, !ifExists);
if (database == null) {
return;
}
// if cascade=true, then we need to authorize the drop table action as well
if (ifCascade) {
// add the tables as well to outputs
List tableNames;
// get names of all tables under this dbName
try {
tableNames = db.getAllTables(dbName);
} catch (HiveException e) {
throw new SemanticException(e);
}
// add tables to outputs
if (tableNames != null) {
for (String tableName : tableNames) {
Table table = getTable(dbName, tableName, true);
// We want no lock here, as the database lock will cover the tables,
// and putting a lock will actually cause us to deadlock on ourselves.
outputs.add(new WriteEntity(table, WriteEntity.WriteType.DDL_NO_LOCK));
}
}
}
inputs.add(new ReadEntity(database));
outputs.add(new WriteEntity(database, WriteEntity.WriteType.DDL_EXCLUSIVE));
DropDatabaseDesc dropDatabaseDesc = new DropDatabaseDesc(dbName, ifExists, ifCascade);
rootTasks.add(TaskFactory.get(new DDLWork(getInputs(), getOutputs(), dropDatabaseDesc), conf));
}
private void analyzeSwitchDatabase(ASTNode ast) throws SemanticException {
String dbName = unescapeIdentifier(ast.getChild(0).getText());
Database database = getDatabase(dbName, true);
ReadEntity dbReadEntity = new ReadEntity(database);
dbReadEntity.noLockNeeded();
inputs.add(dbReadEntity);
SwitchDatabaseDesc switchDatabaseDesc = new SwitchDatabaseDesc(dbName);
rootTasks.add(TaskFactory.get(new DDLWork(getInputs(), getOutputs(),
switchDatabaseDesc), conf));
}
private void analyzeDropTable(ASTNode ast, boolean expectView)
throws SemanticException {
String tableName = getUnescapedName((ASTNode) ast.getChild(0));
boolean ifExists = (ast.getFirstChildWithType(HiveParser.TOK_IFEXISTS) != null);
// we want to signal an error if the table/view doesn't exist and we're
// configured not to fail silently
boolean throwException =
!ifExists && !HiveConf.getBoolVar(conf, ConfVars.DROPIGNORESNONEXISTENT);
Table tab = getTable(tableName, throwException);
if (tab != null) {
inputs.add(new ReadEntity(tab));
outputs.add(new WriteEntity(tab, WriteEntity.WriteType.DDL_EXCLUSIVE));
}
boolean ifPurge = (ast.getFirstChildWithType(HiveParser.KW_PURGE) != null);
DropTableDesc dropTblDesc = new DropTableDesc(tableName, expectView, ifExists, ifPurge);
rootTasks.add(TaskFactory.get(new DDLWork(getInputs(), getOutputs(),
dropTblDesc), conf));
}
private void analyzeTruncateTable(ASTNode ast) throws SemanticException {
ASTNode root = (ASTNode) ast.getChild(0); // TOK_TABLE_PARTITION
String tableName = getUnescapedName((ASTNode) root.getChild(0));
Table table = getTable(tableName, true);
if (table.getTableType() != TableType.MANAGED_TABLE) {
throw new SemanticException(ErrorMsg.TRUNCATE_FOR_NON_MANAGED_TABLE.format(tableName));
}
if (table.isNonNative()) {
throw new SemanticException(ErrorMsg.TRUNCATE_FOR_NON_NATIVE_TABLE.format(tableName)); //TODO
}
if (!table.isPartitioned() && root.getChildCount() > 1) {
throw new SemanticException(ErrorMsg.PARTSPEC_FOR_NON_PARTITIONED_TABLE.format(tableName));
}
Map partSpec = getPartSpec((ASTNode) root.getChild(1));
if (partSpec == null) {
if (!table.isPartitioned()) {
outputs.add(new WriteEntity(table, WriteEntity.WriteType.DDL_EXCLUSIVE));
} else {
for (Partition partition : getPartitions(table, null, false)) {
outputs.add(new WriteEntity(partition, WriteEntity.WriteType.DDL_EXCLUSIVE));
}
}
} else {
if (isFullSpec(table, partSpec)) {
Partition partition = getPartition(table, partSpec, true);
outputs.add(new WriteEntity(partition, WriteEntity.WriteType.DDL_EXCLUSIVE));
} else {
for (Partition partition : getPartitions(table, partSpec, false)) {
outputs.add(new WriteEntity(partition, WriteEntity.WriteType.DDL_EXCLUSIVE));
}
}
}
TruncateTableDesc truncateTblDesc = new TruncateTableDesc(tableName, partSpec);
DDLWork ddlWork = new DDLWork(getInputs(), getOutputs(), truncateTblDesc);
Task truncateTask = TaskFactory.get(ddlWork, conf);
// Is this a truncate column command
List columnNames = null;
if (ast.getChildCount() == 2) {
try {
columnNames = getColumnNames((ASTNode)ast.getChild(1));
// Throw an error if the table is indexed
List indexes = db.getIndexes(table.getDbName(), tableName, (short)1);
if (indexes != null && indexes.size() > 0) {
throw new SemanticException(ErrorMsg.TRUNCATE_COLUMN_INDEXED_TABLE.getMsg());
}
List bucketCols = null;
Class inputFormatClass = null;
boolean isArchived = false;
Path newTblPartLoc = null;
Path oldTblPartLoc = null;
List cols = null;
ListBucketingCtx lbCtx = null;
boolean isListBucketed = false;
List listBucketColNames = null;
if (table.isPartitioned()) {
Partition part = db.getPartition(table, partSpec, false);
Path tabPath = table.getPath();
Path partPath = part.getDataLocation();
// if the table is in a different dfs than the partition,
// replace the partition's dfs with the table's dfs.
newTblPartLoc = new Path(tabPath.toUri().getScheme(), tabPath.toUri()
.getAuthority(), partPath.toUri().getPath());
oldTblPartLoc = partPath;
cols = part.getCols();
bucketCols = part.getBucketCols();
inputFormatClass = part.getInputFormatClass();
isArchived = ArchiveUtils.isArchived(part);
lbCtx = constructListBucketingCtx(part.getSkewedColNames(), part.getSkewedColValues(),
part.getSkewedColValueLocationMaps(), part.isStoredAsSubDirectories(), conf);
isListBucketed = part.isStoredAsSubDirectories();
listBucketColNames = part.getSkewedColNames();
} else {
// input and output are the same
oldTblPartLoc = table.getPath();
newTblPartLoc = table.getPath();
cols = table.getCols();
bucketCols = table.getBucketCols();
inputFormatClass = table.getInputFormatClass();
lbCtx = constructListBucketingCtx(table.getSkewedColNames(), table.getSkewedColValues(),
table.getSkewedColValueLocationMaps(), table.isStoredAsSubDirectories(), conf);
isListBucketed = table.isStoredAsSubDirectories();
listBucketColNames = table.getSkewedColNames();
}
// throw a HiveException for non-rcfile.
if (!inputFormatClass.equals(RCFileInputFormat.class)) {
throw new SemanticException(ErrorMsg.TRUNCATE_COLUMN_NOT_RC.getMsg());
}
// throw a HiveException if the table/partition is archived
if (isArchived) {
throw new SemanticException(ErrorMsg.TRUNCATE_COLUMN_ARCHIVED.getMsg());
}
Set columnIndexes = new HashSet();
for (String columnName : columnNames) {
boolean found = false;
for (int columnIndex = 0; columnIndex < cols.size(); columnIndex++) {
if (columnName.equalsIgnoreCase(cols.get(columnIndex).getName())) {
columnIndexes.add(columnIndex);
found = true;
break;
}
}
// Throw an exception if the user is trying to truncate a column which doesn't exist
if (!found) {
throw new SemanticException(ErrorMsg.INVALID_COLUMN.getMsg(columnName));
}
// Throw an exception if the table/partition is bucketed on one of the columns
for (String bucketCol : bucketCols) {
if (bucketCol.equalsIgnoreCase(columnName)) {
throw new SemanticException(ErrorMsg.TRUNCATE_BUCKETED_COLUMN.getMsg(columnName));
}
}
if (isListBucketed) {
for (String listBucketCol : listBucketColNames) {
if (listBucketCol.equalsIgnoreCase(columnName)) {
throw new SemanticException(
ErrorMsg.TRUNCATE_LIST_BUCKETED_COLUMN.getMsg(columnName));
}
}
}
}
truncateTblDesc.setColumnIndexes(new ArrayList(columnIndexes));
truncateTblDesc.setInputDir(oldTblPartLoc);
addInputsOutputsAlterTable(tableName, partSpec);
truncateTblDesc.setLbCtx(lbCtx);
addInputsOutputsAlterTable(tableName, partSpec);
ddlWork.setNeedLock(true);
TableDesc tblDesc = Utilities.getTableDesc(table);
// Write the output to temporary directory and move it to the final location at the end
// so the operation is atomic.
Path queryTmpdir = ctx.getExternalTmpPath(newTblPartLoc);
truncateTblDesc.setOutputDir(queryTmpdir);
LoadTableDesc ltd = new LoadTableDesc(queryTmpdir, tblDesc,
partSpec == null ? new HashMap() : partSpec);
ltd.setLbCtx(lbCtx);
Task moveTsk = TaskFactory.get(new MoveWork(null, null, ltd, null, false),
conf);
truncateTask.addDependentTask(moveTsk);
// Recalculate the HDFS stats if auto gather stats is set
if (conf.getBoolVar(HiveConf.ConfVars.HIVESTATSAUTOGATHER)) {
StatsWork statDesc;
if (oldTblPartLoc.equals(newTblPartLoc)) {
// If we're merging to the same location, we can avoid some metastore calls
tableSpec tablepart = new tableSpec(this.db, conf, root);
statDesc = new StatsWork(tablepart);
} else {
statDesc = new StatsWork(ltd);
}
statDesc.setNoStatsAggregator(true);
statDesc.setClearAggregatorStats(true);
statDesc.setStatsReliable(conf.getBoolVar(HiveConf.ConfVars.HIVE_STATS_RELIABLE));
Task statTask = TaskFactory.get(statDesc, conf);
moveTsk.addDependentTask(statTask);
}
} catch (HiveException e) {
throw new SemanticException(e);
}
}
rootTasks.add(truncateTask);
}
public static boolean isFullSpec(Table table, Map partSpec) {
for (FieldSchema partCol : table.getPartCols()) {
if (partSpec.get(partCol.getName()) == null) {
return false;
}
}
return true;
}
private void analyzeCreateIndex(ASTNode ast) throws SemanticException {
String indexName = unescapeIdentifier(ast.getChild(0).getText());
String typeName = unescapeSQLString(ast.getChild(1).getText());
String[] qTabName = getQualifiedTableName((ASTNode) ast.getChild(2));
List indexedCols = getColumnNames((ASTNode) ast.getChild(3));
IndexType indexType = HiveIndex.getIndexType(typeName);
if (indexType != null) {
typeName = indexType.getHandlerClsName();
} else {
try {
Class.forName(typeName);
} catch (Exception e) {
throw new SemanticException("class name provided for index handler not found.", e);
}
}
String indexTableName = null;
boolean deferredRebuild = false;
String location = null;
Map tblProps = null;
Map idxProps = null;
String indexComment = null;
RowFormatParams rowFormatParams = new RowFormatParams();
StorageFormat storageFormat = new StorageFormat(conf);
for (int idx = 4; idx < ast.getChildCount(); idx++) {
ASTNode child = (ASTNode) ast.getChild(idx);
if (storageFormat.fillStorageFormat(child)) {
continue;
}
switch (child.getToken().getType()) {
case HiveParser.TOK_TABLEROWFORMAT:
rowFormatParams.analyzeRowFormat(child);
break;
case HiveParser.TOK_CREATEINDEX_INDEXTBLNAME:
ASTNode ch = (ASTNode) child.getChild(0);
indexTableName = getUnescapedName(ch);
break;
case HiveParser.TOK_DEFERRED_REBUILDINDEX:
deferredRebuild = true;
break;
case HiveParser.TOK_TABLELOCATION:
location = unescapeSQLString(child.getChild(0).getText());
addLocationToOutputs(location);
break;
case HiveParser.TOK_TABLEPROPERTIES:
tblProps = DDLSemanticAnalyzer.getProps((ASTNode) child.getChild(0));
break;
case HiveParser.TOK_INDEXPROPERTIES:
idxProps = DDLSemanticAnalyzer.getProps((ASTNode) child.getChild(0));
break;
case HiveParser.TOK_TABLESERIALIZER:
child = (ASTNode) child.getChild(0);
storageFormat.setSerde(unescapeSQLString(child.getChild(0).getText()));
if (child.getChildCount() == 2) {
readProps((ASTNode) (child.getChild(1).getChild(0)),
storageFormat.getSerdeProps());
}
break;
case HiveParser.TOK_INDEXCOMMENT:
child = (ASTNode) child.getChild(0);
indexComment = unescapeSQLString(child.getText());
}
}
storageFormat.fillDefaultStorageFormat();
if (indexTableName == null) {
indexTableName = MetaStoreUtils.getIndexTableName(qTabName[0], qTabName[1], indexName);
indexTableName = qTabName[0] + "." + indexTableName; // on same database with base table
} else {
indexTableName = getDotName(Utilities.getDbTableName(indexTableName));
}
inputs.add(new ReadEntity(getTable(qTabName)));
CreateIndexDesc crtIndexDesc = new CreateIndexDesc(getDotName(qTabName), indexName,
indexedCols, indexTableName, deferredRebuild, storageFormat.getInputFormat(),
storageFormat.getOutputFormat(),
storageFormat.getStorageHandler(), typeName, location, idxProps, tblProps,
storageFormat.getSerde(), storageFormat.getSerdeProps(), rowFormatParams.collItemDelim,
rowFormatParams.fieldDelim, rowFormatParams.fieldEscape,
rowFormatParams.lineDelim, rowFormatParams.mapKeyDelim, indexComment);
Task createIndex =
TaskFactory.get(new DDLWork(getInputs(), getOutputs(), crtIndexDesc), conf);
rootTasks.add(createIndex);
}
private void analyzeDropIndex(ASTNode ast) throws SemanticException {
String indexName = unescapeIdentifier(ast.getChild(0).getText());
String tableName = getUnescapedName((ASTNode) ast.getChild(1));
boolean ifExists = (ast.getFirstChildWithType(HiveParser.TOK_IFEXISTS) != null);
// we want to signal an error if the index doesn't exist and we're
// configured not to ignore this
boolean throwException =
!ifExists && !HiveConf.getBoolVar(conf, ConfVars.DROPIGNORESNONEXISTENT);
if (throwException) {
try {
Index idx = db.getIndex(tableName, indexName);
} catch (HiveException e) {
throw new SemanticException(ErrorMsg.INVALID_INDEX.getMsg(indexName));
}
}
Table tbl = getTable(tableName, false);
if (tbl != null) {
inputs.add(new ReadEntity(getTable(tableName)));
}
DropIndexDesc dropIdxDesc = new DropIndexDesc(indexName, tableName);
rootTasks.add(TaskFactory.get(new DDLWork(getInputs(), getOutputs(),
dropIdxDesc), conf));
}
private void analyzeAlterIndexRebuild(ASTNode ast) throws SemanticException {
String[] qualified = getQualifiedTableName((ASTNode) ast.getChild(0));
String indexName = unescapeIdentifier(ast.getChild(1).getText());
HashMap partSpec = null;
Tree part = ast.getChild(2);
if (part != null) {
partSpec = extractPartitionSpecs(part);
}
List> indexBuilder = getIndexBuilderMapRed(qualified, indexName, partSpec);
rootTasks.addAll(indexBuilder);
// Handle updating index timestamps
AlterIndexDesc alterIdxDesc = new AlterIndexDesc(AlterIndexTypes.UPDATETIMESTAMP);
alterIdxDesc.setIndexName(indexName);
alterIdxDesc.setBaseTableName(getDotName(qualified));
alterIdxDesc.setSpec(partSpec);
Task tsTask = TaskFactory.get(new DDLWork(alterIdxDesc), conf);
for (Task t : indexBuilder) {
t.addDependentTask(tsTask);
}
}
private void analyzeAlterIndexProps(ASTNode ast)
throws SemanticException {
String[] qualified = getQualifiedTableName((ASTNode) ast.getChild(0));
String indexName = unescapeIdentifier(ast.getChild(1).getText());
HashMap mapProp = getProps((ASTNode) (ast.getChild(2))
.getChild(0));
AlterIndexDesc alterIdxDesc = new AlterIndexDesc(AlterIndexTypes.ADDPROPS);
alterIdxDesc.setProps(mapProp);
alterIdxDesc.setIndexName(indexName);
alterIdxDesc.setBaseTableName(getDotName(qualified));
rootTasks.add(TaskFactory.get(new DDLWork(alterIdxDesc), conf));
}
private List> getIndexBuilderMapRed(String[] names, String indexName,
HashMap partSpec) throws SemanticException {
try {
Index index = db.getIndex(names[0], names[1], indexName);
Table indexTbl = null;
String indexTableName = index.getIndexTableName();
if (indexTableName != null) {
indexTbl = getTable(Utilities.getDbTableName(index.getDbName(), indexTableName));
}
Table baseTbl = getTable(new String[] {index.getDbName(), index.getOrigTableName()});
String handlerCls = index.getIndexHandlerClass();
HiveIndexHandler handler = HiveUtils.getIndexHandler(conf, handlerCls);
List indexTblPartitions = null;
List baseTblPartitions = null;
if (indexTbl != null) {
indexTblPartitions = new ArrayList();
baseTblPartitions = preparePartitions(baseTbl, partSpec,
indexTbl, db, indexTblPartitions);
}
List> ret = handler.generateIndexBuildTaskList(baseTbl,
index, indexTblPartitions, baseTblPartitions, indexTbl, getInputs(), getOutputs());
return ret;
} catch (Exception e) {
throw new SemanticException(e);
}
}
private List preparePartitions(
org.apache.hadoop.hive.ql.metadata.Table baseTbl,
HashMap partSpec,
org.apache.hadoop.hive.ql.metadata.Table indexTbl, Hive db,
List indexTblPartitions)
throws HiveException, MetaException {
List baseTblPartitions = new ArrayList();
if (partSpec != null) {
// if partspec is specified, then only producing index for that
// partition
Partition part = db.getPartition(baseTbl, partSpec, false);
if (part == null) {
throw new HiveException("Partition "
+ Warehouse.makePartName(partSpec, false)
+ " does not exist in table "
+ baseTbl.getTableName());
}
baseTblPartitions.add(part);
Partition indexPart = db.getPartition(indexTbl, partSpec, false);
if (indexPart == null) {
indexPart = db.createPartition(indexTbl, partSpec);
}
indexTblPartitions.add(indexPart);
} else if (baseTbl.isPartitioned()) {
// if no partition is specified, create indexes for all partitions one
// by one.
baseTblPartitions = db.getPartitions(baseTbl);
for (Partition basePart : baseTblPartitions) {
HashMap pSpec = basePart.getSpec();
Partition indexPart = db.getPartition(indexTbl, pSpec, false);
if (indexPart == null) {
indexPart = db.createPartition(indexTbl, pSpec);
}
indexTblPartitions.add(indexPart);
}
}
return baseTblPartitions;
}
private void validateAlterTableType(Table tbl, AlterTableTypes op) throws SemanticException {
validateAlterTableType(tbl, op, false);
}
private void validateAlterTableType(Table tbl, AlterTableTypes op, boolean expectView)
throws SemanticException {
if (tbl.isView()) {
if (!expectView) {
throw new SemanticException(ErrorMsg.ALTER_COMMAND_FOR_VIEWS.getMsg());
}
switch (op) {
case ADDPARTITION:
case DROPPARTITION:
case RENAMEPARTITION:
case ADDPROPS:
case DROPPROPS:
case RENAME:
// allow this form
break;
default:
throw new SemanticException(ErrorMsg.ALTER_VIEW_DISALLOWED_OP.getMsg(op.toString()));
}
} else {
if (expectView) {
throw new SemanticException(ErrorMsg.ALTER_COMMAND_FOR_TABLES.getMsg());
}
}
if (tbl.isNonNative()) {
throw new SemanticException(ErrorMsg.ALTER_TABLE_NON_NATIVE.getMsg(tbl.getTableName()));
}
}
private void analyzeAlterTableProps(String[] qualified, ASTNode ast, boolean expectView, boolean isUnset)
throws SemanticException {
String tableName = getDotName(qualified);
HashMap mapProp = getProps((ASTNode) (ast.getChild(0))
.getChild(0));
AlterTableDesc alterTblDesc = null;
if (isUnset == true) {
alterTblDesc = new AlterTableDesc(AlterTableTypes.DROPPROPS, expectView);
if (ast.getChild(1) != null) {
alterTblDesc.setDropIfExists(true);
}
} else {
alterTblDesc = new AlterTableDesc(AlterTableTypes.ADDPROPS, expectView);
}
alterTblDesc.setProps(mapProp);
alterTblDesc.setOldName(tableName);
addInputsOutputsAlterTable(tableName, null, alterTblDesc);
rootTasks.add(TaskFactory.get(new DDLWork(getInputs(), getOutputs(),
alterTblDesc), conf));
}
private void analyzeAlterTableSerdeProps(ASTNode ast, String tableName,
HashMap partSpec)
throws SemanticException {
HashMap mapProp = getProps((ASTNode) (ast.getChild(0))
.getChild(0));
AlterTableDesc alterTblDesc = new AlterTableDesc(
AlterTableTypes.ADDSERDEPROPS);
alterTblDesc.setProps(mapProp);
alterTblDesc.setOldName(tableName);
alterTblDesc.setPartSpec(partSpec);
addInputsOutputsAlterTable(tableName, partSpec, alterTblDesc);
rootTasks.add(TaskFactory.get(new DDLWork(getInputs(), getOutputs(),
alterTblDesc), conf));
}
private void analyzeAlterTableSerde(ASTNode ast, String tableName,
HashMap partSpec)
throws SemanticException {
String serdeName = unescapeSQLString(ast.getChild(0).getText());
AlterTableDesc alterTblDesc = new AlterTableDesc(AlterTableTypes.ADDSERDE);
if (ast.getChildCount() > 1) {
HashMap mapProp = getProps((ASTNode) (ast.getChild(1))
.getChild(0));
alterTblDesc.setProps(mapProp);
}
alterTblDesc.setOldName(tableName);
alterTblDesc.setSerdeName(serdeName);
alterTblDesc.setPartSpec(partSpec);
addInputsOutputsAlterTable(tableName, partSpec, alterTblDesc);
rootTasks.add(TaskFactory.get(new DDLWork(getInputs(), getOutputs(),
alterTblDesc), conf));
}
private void analyzeAlterTableFileFormat(ASTNode ast, String tableName,
HashMap partSpec)
throws SemanticException {
StorageFormat format = new StorageFormat(conf);
ASTNode child = (ASTNode) ast.getChild(0);
if (!format.fillStorageFormat(child)) {
throw new AssertionError("Unknown token " + child.getText());
}
AlterTableDesc alterTblDesc = new AlterTableDesc(tableName, format.getInputFormat(),
format.getOutputFormat(), format.getSerde(), format.getStorageHandler(), partSpec);
addInputsOutputsAlterTable(tableName, partSpec, alterTblDesc);
rootTasks.add(TaskFactory.get(new DDLWork(getInputs(), getOutputs(),
alterTblDesc), conf));
}
private void addInputsOutputsAlterTable(String tableName, Map partSpec)
throws SemanticException {
addInputsOutputsAlterTable(tableName, partSpec, null);
}
private void addInputsOutputsAlterTable(String tableName, Map partSpec,
AlterTableDesc desc) throws SemanticException {
Table tab = getTable(tableName, true);
// Determine the lock type to acquire
WriteEntity.WriteType writeType = desc == null ? WriteEntity.WriteType.DDL_EXCLUSIVE :
WriteEntity.determineAlterTableWriteType(desc.getOp());
if (partSpec == null || partSpec.isEmpty()) {
inputs.add(new ReadEntity(tab));
outputs.add(new WriteEntity(tab, writeType));
}
else {
ReadEntity re = new ReadEntity(tab);
// In the case of altering a table for its partitions we don't need to lock the table
// itself, just the partitions. But the table will have a ReadEntity. So mark that
// ReadEntity as no lock.
re.noLockNeeded();
inputs.add(re);
if (isFullSpec(tab, partSpec)) {
// Fully specified partition spec
Partition part = getPartition(tab, partSpec, true);
outputs.add(new WriteEntity(part, writeType));
} else {
// Partial partition spec supplied. Make sure this is allowed.
if (desc == null
|| !AlterTableDesc.doesAlterTableTypeSupportPartialPartitionSpec(desc.getOp())) {
String alterTabletype = (desc != null) ? desc.getOp().name() : "";
throw new SemanticException(
ErrorMsg.ALTER_TABLE_TYPE_PARTIAL_PARTITION_SPEC_NO_SUPPORTED, alterTabletype);
} else if (!conf.getBoolVar(HiveConf.ConfVars.DYNAMICPARTITIONING)) {
throw new SemanticException(ErrorMsg.DYNAMIC_PARTITION_DISABLED);
}
for (Partition part : getPartitions(tab, partSpec, true)) {
outputs.add(new WriteEntity(part, writeType));
}
}
}
if (desc != null) {
validateAlterTableType(tab, desc.getOp(), desc.getExpectView());
// validate Unset Non Existed Table Properties
if (desc.getOp() == AlterTableDesc.AlterTableTypes.DROPPROPS &&
desc.getIsDropIfExists() == false) {
Iterator keyItr = desc.getProps().keySet().iterator();
while (keyItr.hasNext()) {
String currKey = keyItr.next();
if (tab.getTTable().getParameters().containsKey(currKey) == false) {
String errorMsg =
"The following property " + currKey +
" does not exist in " + tab.getTableName();
throw new SemanticException(
ErrorMsg.ALTER_TBL_UNSET_NON_EXIST_PROPERTY.getMsg(errorMsg));
}
}
}
}
}
private void analyzeAlterTableLocation(ASTNode ast, String tableName,
HashMap partSpec) throws SemanticException {
String newLocation = unescapeSQLString(ast.getChild(0).getText());
addLocationToOutputs(newLocation);
AlterTableDesc alterTblDesc = new AlterTableDesc(tableName, newLocation, partSpec);
addInputsOutputsAlterTable(tableName, partSpec, alterTblDesc);
rootTasks.add(TaskFactory.get(new DDLWork(getInputs(), getOutputs(),
alterTblDesc), conf));
}
private void analyzeAlterTableProtectMode(ASTNode ast, String tableName,
HashMap partSpec)
throws SemanticException {
AlterTableDesc alterTblDesc =
new AlterTableDesc(AlterTableTypes.ALTERPROTECTMODE);
alterTblDesc.setOldName(tableName);
alterTblDesc.setPartSpec(partSpec);
ASTNode child = (ASTNode) ast.getChild(0);
switch (child.getToken().getType()) {
case HiveParser.TOK_ENABLE:
alterTblDesc.setProtectModeEnable(true);
break;
case HiveParser.TOK_DISABLE:
alterTblDesc.setProtectModeEnable(false);
break;
default:
throw new SemanticException(
"Set Protect mode Syntax parsing error.");
}
ASTNode grandChild = (ASTNode) child.getChild(0);
switch (grandChild.getToken().getType()) {
case HiveParser.TOK_OFFLINE:
alterTblDesc.setProtectModeType(AlterTableDesc.ProtectModeType.OFFLINE);
break;
case HiveParser.TOK_NO_DROP:
if (grandChild.getChildCount() > 0) {
alterTblDesc.setProtectModeType(AlterTableDesc.ProtectModeType.NO_DROP_CASCADE);
}
else {
alterTblDesc.setProtectModeType(AlterTableDesc.ProtectModeType.NO_DROP);
}
break;
case HiveParser.TOK_READONLY:
throw new SemanticException(
"Potect mode READONLY is not implemented");
default:
throw new SemanticException(
"Only protect mode NO_DROP or OFFLINE supported");
}
addInputsOutputsAlterTable(tableName, partSpec, alterTblDesc);
rootTasks.add(TaskFactory.get(new DDLWork(getInputs(), getOutputs(),
alterTblDesc), conf));
}
private void analyzeAlterTablePartMergeFiles(ASTNode ast,
String tableName, HashMap partSpec)
throws SemanticException {
AlterTablePartMergeFilesDesc mergeDesc = new AlterTablePartMergeFilesDesc(
tableName, partSpec);
List inputDir = new ArrayList();
Path oldTblPartLoc = null;
Path newTblPartLoc = null;
Table tblObj = null;
ListBucketingCtx lbCtx = null;
try {
tblObj = getTable(tableName);
List bucketCols = null;
Class inputFormatClass = null;
boolean isArchived = false;
boolean checkIndex = HiveConf.getBoolVar(conf,
HiveConf.ConfVars.HIVE_CONCATENATE_CHECK_INDEX);
if (checkIndex) {
List indexes = db.getIndexes(tblObj.getDbName(), tblObj.getTableName(),
Short.MAX_VALUE);
if (indexes != null && indexes.size() > 0) {
throw new SemanticException("can not do merge because source table "
+ tableName + " is indexed.");
}
}
if (tblObj.isPartitioned()) {
if (partSpec == null) {
throw new SemanticException("source table " + tableName
+ " is partitioned but no partition desc found.");
} else {
Partition part = getPartition(tblObj, partSpec, false);
if (part == null) {
throw new SemanticException("source table " + tableName
+ " is partitioned but partition not found.");
}
bucketCols = part.getBucketCols();
inputFormatClass = part.getInputFormatClass();
isArchived = ArchiveUtils.isArchived(part);
Path tabPath = tblObj.getPath();
Path partPath = part.getDataLocation();
// if the table is in a different dfs than the partition,
// replace the partition's dfs with the table's dfs.
newTblPartLoc = new Path(tabPath.toUri().getScheme(), tabPath.toUri()
.getAuthority(), partPath.toUri().getPath());
oldTblPartLoc = partPath;
lbCtx = constructListBucketingCtx(part.getSkewedColNames(), part.getSkewedColValues(),
part.getSkewedColValueLocationMaps(), part.isStoredAsSubDirectories(), conf);
}
} else {
inputFormatClass = tblObj.getInputFormatClass();
bucketCols = tblObj.getBucketCols();
// input and output are the same
oldTblPartLoc = tblObj.getPath();
newTblPartLoc = tblObj.getPath();
lbCtx = constructListBucketingCtx(tblObj.getSkewedColNames(), tblObj.getSkewedColValues(),
tblObj.getSkewedColValueLocationMaps(), tblObj.isStoredAsSubDirectories(), conf);
}
// throw a HiveException for other than rcfile and orcfile.
if (!((inputFormatClass.equals(RCFileInputFormat.class) ||
(inputFormatClass.equals(OrcInputFormat.class))))) {
throw new SemanticException(
"Only RCFile and ORCFile Formats are supportted right now.");
}
mergeDesc.setInputFormatClass(inputFormatClass);
// throw a HiveException if the table/partition is bucketized
if (bucketCols != null && bucketCols.size() > 0) {
throw new SemanticException(
"Merge can not perform on bucketized partition/table.");
}
// throw a HiveException if the table/partition is archived
if (isArchived) {
throw new SemanticException(
"Merge can not perform on archived partitions.");
}
inputDir.add(oldTblPartLoc);
mergeDesc.setInputDir(inputDir);
mergeDesc.setLbCtx(lbCtx);
addInputsOutputsAlterTable(tableName, partSpec);
DDLWork ddlWork = new DDLWork(getInputs(), getOutputs(), mergeDesc);
ddlWork.setNeedLock(true);
Task mergeTask = TaskFactory.get(ddlWork, conf);
TableDesc tblDesc = Utilities.getTableDesc(tblObj);
Path queryTmpdir = ctx.getExternalTmpPath(newTblPartLoc);
mergeDesc.setOutputDir(queryTmpdir);
LoadTableDesc ltd = new LoadTableDesc(queryTmpdir, tblDesc,
partSpec == null ? new HashMap() : partSpec);
ltd.setLbCtx(lbCtx);
Task moveTsk = TaskFactory.get(new MoveWork(null, null, ltd, null, false),
conf);
mergeTask.addDependentTask(moveTsk);
if (conf.getBoolVar(HiveConf.ConfVars.HIVESTATSAUTOGATHER)) {
StatsWork statDesc;
if (oldTblPartLoc.equals(newTblPartLoc)) {
// If we're merging to the same location, we can avoid some metastore calls
tableSpec tablepart = new tableSpec(db, conf, tableName, partSpec);
statDesc = new StatsWork(tablepart);
} else {
statDesc = new StatsWork(ltd);
}
statDesc.setNoStatsAggregator(true);
statDesc.setClearAggregatorStats(true);
statDesc.setStatsReliable(conf.getBoolVar(HiveConf.ConfVars.HIVE_STATS_RELIABLE));
Task statTask = TaskFactory.get(statDesc, conf);
moveTsk.addDependentTask(statTask);
}
rootTasks.add(mergeTask);
} catch (Exception e) {
throw new SemanticException(e);
}
}
private void analyzeAlterTableClusterSort(ASTNode ast, String tableName,
HashMap partSpec) throws SemanticException {
addInputsOutputsAlterTable(tableName, partSpec);
AlterTableDesc alterTblDesc;
switch (ast.getChild(0).getType()) {
case HiveParser.TOK_NOT_CLUSTERED:
alterTblDesc = new AlterTableDesc(tableName, -1, new ArrayList(),
new ArrayList(), partSpec);
rootTasks.add(TaskFactory.get(new DDLWork(getInputs(), getOutputs(), alterTblDesc), conf));
break;
case HiveParser.TOK_NOT_SORTED:
alterTblDesc = new AlterTableDesc(tableName, true, partSpec);
rootTasks.add(TaskFactory.get(new DDLWork(getInputs(), getOutputs(), alterTblDesc), conf));
break;
case HiveParser.TOK_ALTERTABLE_BUCKETS:
ASTNode buckets = (ASTNode) ast.getChild(0);
List bucketCols = getColumnNames((ASTNode) buckets.getChild(0));
List sortCols = new ArrayList();
int numBuckets = -1;
if (buckets.getChildCount() == 2) {
numBuckets = (Integer.valueOf(buckets.getChild(1).getText())).intValue();
} else {
sortCols = getColumnNamesOrder((ASTNode) buckets.getChild(1));
numBuckets = (Integer.valueOf(buckets.getChild(2).getText())).intValue();
}
if (numBuckets <= 0) {
throw new SemanticException(ErrorMsg.INVALID_BUCKET_NUMBER.getMsg());
}
alterTblDesc = new AlterTableDesc(tableName, numBuckets,
bucketCols, sortCols, partSpec);
rootTasks.add(TaskFactory.get(new DDLWork(getInputs(), getOutputs(),
alterTblDesc), conf));
break;
}
}
private void analyzeAlterTableCompact(ASTNode ast, String tableName,
HashMap partSpec) throws SemanticException {
String type = unescapeSQLString(ast.getChild(0).getText()).toLowerCase();
if (!type.equals("minor") && !type.equals("major")) {
throw new SemanticException(ErrorMsg.INVALID_COMPACTION_TYPE.getMsg());
}
LinkedHashMap newPartSpec = null;
if (partSpec != null) newPartSpec = new LinkedHashMap(partSpec);
AlterTableSimpleDesc desc = new AlterTableSimpleDesc(
tableName, newPartSpec, type);
rootTasks.add(TaskFactory.get(new DDLWork(getInputs(), getOutputs(), desc), conf));
}
static HashMap getProps(ASTNode prop) {
HashMap mapProp = new HashMap();
readProps(prop, mapProp);
return mapProp;
}
/**
* Utility class to resolve QualifiedName
*/
static class QualifiedNameUtil {
// delimiter to check DOT delimited qualified names
static String delimiter = "\\.";
/**
* Get the fully qualified name in the ast. e.g. the ast of the form ^(DOT
* ^(DOT a b) c) will generate a name of the form a.b.c
*
* @param ast
* The AST from which the qualified name has to be extracted
* @return String
*/
static public String getFullyQualifiedName(ASTNode ast) {
if (ast.getChildCount() == 0) {
return ast.getText();
} else if (ast.getChildCount() == 2) {
return getFullyQualifiedName((ASTNode) ast.getChild(0)) + "."
+ getFullyQualifiedName((ASTNode) ast.getChild(1));
} else if (ast.getChildCount() == 3) {
return getFullyQualifiedName((ASTNode) ast.getChild(0)) + "."
+ getFullyQualifiedName((ASTNode) ast.getChild(1)) + "."
+ getFullyQualifiedName((ASTNode) ast.getChild(2));
} else {
return null;
}
}
// assume the first component of DOT delimited name is tableName
// get the attemptTableName
static public String getAttemptTableName(Hive db, String qualifiedName, boolean isColumn)
throws SemanticException {
// check whether the name starts with table
// DESCRIBE table
// DESCRIBE table.column
// DECRIBE table column
String tableName = qualifiedName.substring(0,
qualifiedName.indexOf('.') == -1 ?
qualifiedName.length() : qualifiedName.indexOf('.'));
try {
Table tab = db.getTable(tableName);
if (tab != null) {
if (isColumn) {
// if attempt to get columnPath
// return the whole qualifiedName(table.column or table)
return qualifiedName;
} else {
// if attempt to get tableName
// return table
return tableName;
}
}
} catch (InvalidTableException e) {
// assume the first DOT delimited component is tableName
// OK if it is not
// do nothing when having exception
return null;
} catch (HiveException e) {
throw new SemanticException(e.getMessage(), e);
}
return null;
}
// get Database Name
static public String getDBName(Hive db, ASTNode ast) {
String dbName = null;
String fullyQualifiedName = getFullyQualifiedName(ast);
// if database.table or database.table.column or table.column
// first try the first component of the DOT separated name
if (ast.getChildCount() >= 2) {
dbName = fullyQualifiedName.substring(0,
fullyQualifiedName.indexOf('.') == -1 ?
fullyQualifiedName.length() :
fullyQualifiedName.indexOf('.'));
try {
// if the database name is not valid
// it is table.column
// return null as dbName
if (!db.databaseExists(dbName)) {
return null;
}
} catch (HiveException e) {
return null;
}
} else {
// in other cases, return null
// database is not validated if null
return null;
}
return dbName;
}
// get Table Name
static public String getTableName(Hive db, ASTNode ast)
throws SemanticException {
String tableName = null;
String fullyQualifiedName = getFullyQualifiedName(ast);
// assume the first component of DOT delimited name is tableName
String attemptTableName = getAttemptTableName(db, fullyQualifiedName, false);
if (attemptTableName != null) {
return attemptTableName;
}
// if the name does not start with table
// it should start with database
// DESCRIBE database.table
// DESCRIBE database.table column
if (fullyQualifiedName.split(delimiter).length == 3) {
// if DESCRIBE database.table.column
// invalid syntax exception
if (ast.getChildCount() == 2) {
throw new SemanticException(ErrorMsg.INVALID_TABLE_OR_COLUMN.getMsg(fullyQualifiedName));
} else {
// if DESCRIBE database.table column
// return database.table as tableName
tableName = fullyQualifiedName.substring(0,
fullyQualifiedName.lastIndexOf('.'));
}
} else if (fullyQualifiedName.split(delimiter).length == 2) {
// if DESCRIBE database.table
// return database.table as tableName
tableName = fullyQualifiedName;
} else {
// if fullyQualifiedName only have one component
// it is an invalid table
throw new SemanticException(ErrorMsg.INVALID_TABLE.getMsg(fullyQualifiedName));
}
return tableName;
}
// get column path
static public String getColPath(
Hive db,
ASTNode parentAst,
ASTNode ast,
String tableName,
Map partSpec) throws SemanticException {
// if parent has two children
// it could be DESCRIBE table key
// or DESCRIBE table partition
if (parentAst.getChildCount() == 2 && partSpec == null) {
// if partitionSpec is null
// it is DESCRIBE table key
// return table as columnPath
return getFullyQualifiedName(parentAst);
}
// assume the first component of DOT delimited name is tableName
String attemptTableName = getAttemptTableName(db, tableName, true);
if (attemptTableName != null) {
return attemptTableName;
}
// if the name does not start with table
// it should start with database
// DESCRIBE database.table
// DESCRIBE database.table column
if (tableName.split(delimiter).length == 3) {
// if DESCRIBE database.table column
// return table.column as column path
return tableName.substring(
tableName.indexOf(".") + 1, tableName.length());
}
// in other cases, column path is the same as tableName
return tableName;
}
// get partition metadata
static public Map getPartitionSpec(Hive db, ASTNode ast, String tableName)
throws SemanticException {
// if ast has two children
// it could be DESCRIBE table key
// or DESCRIBE table partition
// check whether it is DESCRIBE table partition
if (ast.getChildCount() == 2) {
ASTNode partNode = (ASTNode) ast.getChild(1);
HashMap partSpec = null;
try {
partSpec = getPartSpec(partNode);
} catch (SemanticException e) {
// get exception in resolving partition
// it could be DESCRIBE table key
// return null
// continue processing for DESCRIBE table key
return null;
}
Table tab = null;
try {
tab = db.getTable(tableName);
}
catch (InvalidTableException e) {
throw new SemanticException(ErrorMsg.INVALID_TABLE.getMsg(tableName), e);
}
catch (HiveException e) {
throw new SemanticException(e.getMessage(), e);
}
if (partSpec != null) {
Partition part = null;
try {
part = db.getPartition(tab, partSpec, false);
} catch (HiveException e) {
// if get exception in finding partition
// it could be DESCRIBE table key
// return null
// continue processing for DESCRIBE table key
return null;
}
// if partition is not found
// it is DESCRIBE table partition
// invalid partition exception
if (part == null) {
throw new SemanticException(ErrorMsg.INVALID_PARTITION.getMsg(partSpec.toString()));
}
// it is DESCRIBE table partition
// return partition metadata
return partSpec;
}
}
return null;
}
}
/**
* Create a FetchTask for a given thrift ddl schema.
*
* @param schema
* thrift ddl
*/
private FetchTask createFetchTask(String schema) {
Properties prop = new Properties();
prop.setProperty(serdeConstants.SERIALIZATION_FORMAT, "9");
prop.setProperty(serdeConstants.SERIALIZATION_NULL_FORMAT, " ");
String[] colTypes = schema.split("#");
prop.setProperty("columns", colTypes[0]);
prop.setProperty("columns.types", colTypes[1]);
prop.setProperty(serdeConstants.SERIALIZATION_LIB, LazySimpleSerDe.class.getName());
FetchWork fetch = new FetchWork(ctx.getResFile(), new TableDesc(
TextInputFormat.class,IgnoreKeyTextOutputFormat.class, prop), -1);
fetch.setSerializationNullFormat(" ");
return (FetchTask) TaskFactory.get(fetch, conf);
}
private void validateDatabase(String databaseName) throws SemanticException {
try {
if (!db.databaseExists(databaseName)) {
throw new SemanticException(ErrorMsg.DATABASE_NOT_EXISTS.getMsg(databaseName));
}
} catch (HiveException e) {
throw new SemanticException(ErrorMsg.DATABASE_NOT_EXISTS.getMsg(databaseName), e);
}
}
private void validateTable(String tableName, Map partSpec)
throws SemanticException {
Table tab = getTable(tableName);
if (partSpec != null) {
getPartition(tab, partSpec, true);
}
}
private void analyzeDescribeTable(ASTNode ast) throws SemanticException {
ASTNode tableTypeExpr = (ASTNode) ast.getChild(0);
String qualifiedName =
QualifiedNameUtil.getFullyQualifiedName((ASTNode) tableTypeExpr.getChild(0));
String tableName =
QualifiedNameUtil.getTableName(db, (ASTNode)(tableTypeExpr.getChild(0)));
String dbName =
QualifiedNameUtil.getDBName(db, (ASTNode)(tableTypeExpr.getChild(0)));
Map partSpec =
QualifiedNameUtil.getPartitionSpec(db, tableTypeExpr, tableName);
String colPath = QualifiedNameUtil.getColPath(
db, tableTypeExpr, (ASTNode) tableTypeExpr.getChild(0), qualifiedName, partSpec);
// if database is not the one currently using
// validate database
if (dbName != null) {
validateDatabase(dbName);
}
if (partSpec != null) {
validateTable(tableName, partSpec);
}
DescTableDesc descTblDesc = new DescTableDesc(
ctx.getResFile(), tableName, partSpec, colPath);
boolean showColStats = false;
if (ast.getChildCount() == 2) {
int descOptions = ast.getChild(1).getType();
descTblDesc.setFormatted(descOptions == HiveParser.KW_FORMATTED);
descTblDesc.setExt(descOptions == HiveParser.KW_EXTENDED);
descTblDesc.setPretty(descOptions == HiveParser.KW_PRETTY);
// in case of "DESCRIBE FORMATTED tablename column_name" statement, colPath
// will contain tablename.column_name. If column_name is not specified
// colPath will be equal to tableName. This is how we can differentiate
// if we are describing a table or column
if (!colPath.equalsIgnoreCase(tableName) && descTblDesc.isFormatted()) {
showColStats = true;
}
}
inputs.add(new ReadEntity(getTable(tableName)));
Task ddlTask = TaskFactory.get(new DDLWork(getInputs(), getOutputs(),
descTblDesc), conf);
rootTasks.add(ddlTask);
String schema = DescTableDesc.getSchema(showColStats);
setFetchTask(createFetchTask(schema));
LOG.info("analyzeDescribeTable done");
}
/**
* Describe database.
*
* @param ast
* @throws SemanticException
*/
private void analyzeDescDatabase(ASTNode ast) throws SemanticException {
boolean isExtended;
String dbName;
if (ast.getChildCount() == 1) {
dbName = stripQuotes(ast.getChild(0).getText());
isExtended = false;
} else if (ast.getChildCount() == 2) {
dbName = stripQuotes(ast.getChild(0).getText());
isExtended = true;
} else {
throw new SemanticException("Unexpected Tokens at DESCRIBE DATABASE");
}
DescDatabaseDesc descDbDesc = new DescDatabaseDesc(ctx.getResFile(),
dbName, isExtended);
rootTasks.add(TaskFactory.get(new DDLWork(getInputs(), getOutputs(), descDbDesc), conf));
setFetchTask(createFetchTask(descDbDesc.getSchema()));
}
public static HashMap getPartSpec(ASTNode partspec)
throws SemanticException {
if (partspec == null) {
return null;
}
HashMap partSpec = new LinkedHashMap();
for (int i = 0; i < partspec.getChildCount(); ++i) {
ASTNode partspec_val = (ASTNode) partspec.getChild(i);
String key = partspec_val.getChild(0).getText();
String val = null;
if (partspec_val.getChildCount() > 1) {
val = stripQuotes(partspec_val.getChild(1).getText());
}
partSpec.put(key.toLowerCase(), val);
}
return partSpec;
}
private void analyzeShowPartitions(ASTNode ast) throws SemanticException {
ShowPartitionsDesc showPartsDesc;
String tableName = getUnescapedName((ASTNode) ast.getChild(0));
List> partSpecs = getPartitionSpecs(ast);
// We only can have a single partition spec
assert (partSpecs.size() <= 1);
Map partSpec = null;
if (partSpecs.size() > 0) {
partSpec = partSpecs.get(0);
}
validateTable(tableName, null);
showPartsDesc = new ShowPartitionsDesc(tableName, ctx.getResFile(), partSpec);
inputs.add(new ReadEntity(getTable(tableName)));
rootTasks.add(TaskFactory.get(new DDLWork(getInputs(), getOutputs(),
showPartsDesc), conf));
setFetchTask(createFetchTask(showPartsDesc.getSchema()));
}
private void analyzeShowCreateTable(ASTNode ast) throws SemanticException {
ShowCreateTableDesc showCreateTblDesc;
String tableName = getUnescapedName((ASTNode)ast.getChild(0));
showCreateTblDesc = new ShowCreateTableDesc(tableName, ctx.getResFile().toString());
Table tab = getTable(tableName);
if (tab.getTableType() == org.apache.hadoop.hive.metastore.TableType.INDEX_TABLE) {
throw new SemanticException(ErrorMsg.SHOW_CREATETABLE_INDEX.getMsg(tableName
+ " has table type INDEX_TABLE"));
}
inputs.add(new ReadEntity(tab));
rootTasks.add(TaskFactory.get(new DDLWork(getInputs(), getOutputs(),
showCreateTblDesc), conf));
setFetchTask(createFetchTask(showCreateTblDesc.getSchema()));
}
private void analyzeShowDatabases(ASTNode ast) throws SemanticException {
ShowDatabasesDesc showDatabasesDesc;
if (ast.getChildCount() == 1) {
String databasePattern = unescapeSQLString(ast.getChild(0).getText());
showDatabasesDesc = new ShowDatabasesDesc(ctx.getResFile(), databasePattern);
} else {
showDatabasesDesc = new ShowDatabasesDesc(ctx.getResFile());
}
rootTasks.add(TaskFactory.get(new DDLWork(getInputs(), getOutputs(), showDatabasesDesc), conf));
setFetchTask(createFetchTask(showDatabasesDesc.getSchema()));
}
private void analyzeShowTables(ASTNode ast) throws SemanticException {
ShowTablesDesc showTblsDesc;
String dbName = SessionState.get().getCurrentDatabase();
String tableNames = null;
if (ast.getChildCount() > 3) {
throw new SemanticException(ErrorMsg.GENERIC_ERROR.getMsg());
}
switch (ast.getChildCount()) {
case 1: // Uses a pattern
tableNames = unescapeSQLString(ast.getChild(0).getText());
showTblsDesc = new ShowTablesDesc(ctx.getResFile(), dbName, tableNames);
break;
case 2: // Specifies a DB
assert (ast.getChild(0).getType() == HiveParser.TOK_FROM);
dbName = unescapeIdentifier(ast.getChild(1).getText());
validateDatabase(dbName);
showTblsDesc = new ShowTablesDesc(ctx.getResFile(), dbName);
break;
case 3: // Uses a pattern and specifies a DB
assert (ast.getChild(0).getType() == HiveParser.TOK_FROM);
dbName = unescapeIdentifier(ast.getChild(1).getText());
tableNames = unescapeSQLString(ast.getChild(2).getText());
validateDatabase(dbName);
showTblsDesc = new ShowTablesDesc(ctx.getResFile(), dbName, tableNames);
break;
default: // No pattern or DB
showTblsDesc = new ShowTablesDesc(ctx.getResFile(), dbName);
break;
}
rootTasks.add(TaskFactory.get(new DDLWork(getInputs(), getOutputs(),
showTblsDesc), conf));
setFetchTask(createFetchTask(showTblsDesc.getSchema()));
}
private void analyzeShowColumns(ASTNode ast) throws SemanticException {
String tableName = getUnescapedName((ASTNode) ast.getChild(0));
if (ast.getChildCount() > 1) {
if (tableName.contains(".")) {
throw new SemanticException("Duplicates declaration for database name");
}
tableName = getUnescapedName((ASTNode) ast.getChild(1)) + "." + tableName;
}
Table tab = getTable(tableName);
inputs.add(new ReadEntity(tab));
ShowColumnsDesc showColumnsDesc = new ShowColumnsDesc(ctx.getResFile(), tableName);
rootTasks.add(TaskFactory.get(new DDLWork(getInputs(), getOutputs(),
showColumnsDesc), conf));
setFetchTask(createFetchTask(showColumnsDesc.getSchema()));
}
private void analyzeShowTableStatus(ASTNode ast) throws SemanticException {
ShowTableStatusDesc showTblStatusDesc;
String tableNames = getUnescapedName((ASTNode) ast.getChild(0));
String dbName = SessionState.get().getCurrentDatabase();
int children = ast.getChildCount();
HashMap partSpec = null;
if (children >= 2) {
if (children > 3) {
throw new SemanticException(ErrorMsg.GENERIC_ERROR.getMsg());
}
for (int i = 1; i < children; i++) {
ASTNode child = (ASTNode) ast.getChild(i);
if (child.getToken().getType() == HiveParser.Identifier) {
dbName = unescapeIdentifier(child.getText());
} else if (child.getToken().getType() == HiveParser.TOK_PARTSPEC) {
partSpec = getPartSpec(child);
} else {
throw new SemanticException(ErrorMsg.GENERIC_ERROR.getMsg());
}
}
}
if (partSpec != null) {
validateTable(tableNames, partSpec);
}
showTblStatusDesc = new ShowTableStatusDesc(ctx.getResFile().toString(), dbName,
tableNames, partSpec);
rootTasks.add(TaskFactory.get(new DDLWork(getInputs(), getOutputs(),
showTblStatusDesc), conf));
setFetchTask(createFetchTask(showTblStatusDesc.getSchema()));
}
private void analyzeShowTableProperties(ASTNode ast) throws SemanticException {
ShowTblPropertiesDesc showTblPropertiesDesc;
String[] qualified = getQualifiedTableName((ASTNode) ast.getChild(0));
String propertyName = null;
if (ast.getChildCount() > 1) {
propertyName = unescapeSQLString(ast.getChild(1).getText());
}
String tableNames = getDotName(qualified);
validateTable(tableNames, null);
showTblPropertiesDesc = new ShowTblPropertiesDesc(ctx.getResFile().toString(), tableNames,
propertyName);
rootTasks.add(TaskFactory.get(new DDLWork(getInputs(), getOutputs(),
showTblPropertiesDesc), conf));
setFetchTask(createFetchTask(showTblPropertiesDesc.getSchema()));
}
private void analyzeShowIndexes(ASTNode ast) throws SemanticException {
ShowIndexesDesc showIndexesDesc;
String tableName = getUnescapedName((ASTNode) ast.getChild(0));
showIndexesDesc = new ShowIndexesDesc(tableName, ctx.getResFile());
if (ast.getChildCount() == 2) {
int descOptions = ast.getChild(1).getType();
showIndexesDesc.setFormatted(descOptions == HiveParser.KW_FORMATTED);
}
rootTasks.add(TaskFactory.get(new DDLWork(getInputs(), getOutputs(),
showIndexesDesc), conf));
setFetchTask(createFetchTask(showIndexesDesc.getSchema()));
}
/**
* Add the task according to the parsed command tree. This is used for the CLI
* command "SHOW FUNCTIONS;".
*
* @param ast
* The parsed command tree.
* @throws SemanticException
* Parsin failed
*/
private void analyzeShowFunctions(ASTNode ast) throws SemanticException {
ShowFunctionsDesc showFuncsDesc;
if (ast.getChildCount() == 1) {
String funcNames = stripQuotes(ast.getChild(0).getText());
showFuncsDesc = new ShowFunctionsDesc(ctx.getResFile(), funcNames);
} else {
showFuncsDesc = new ShowFunctionsDesc(ctx.getResFile());
}
rootTasks.add(TaskFactory.get(new DDLWork(getInputs(), getOutputs(),
showFuncsDesc), conf));
setFetchTask(createFetchTask(showFuncsDesc.getSchema()));
}
/**
* Add the task according to the parsed command tree. This is used for the CLI
* command "SHOW LOCKS;".
*
* @param ast
* The parsed command tree.
* @throws SemanticException
* Parsing failed
*/
private void analyzeShowLocks(ASTNode ast) throws SemanticException {
String tableName = null;
HashMap partSpec = null;
boolean isExtended = false;
if (ast.getChildCount() >= 1) {
// table for which show locks is being executed
for (int i = 0; i < ast.getChildCount(); i++) {
ASTNode child = (ASTNode) ast.getChild(i);
if (child.getType() == HiveParser.TOK_TABTYPE) {
ASTNode tableTypeExpr = child;
tableName =
QualifiedNameUtil.getFullyQualifiedName((ASTNode) tableTypeExpr.getChild(0));
// get partition metadata if partition specified
if (tableTypeExpr.getChildCount() == 2) {
ASTNode partspec = (ASTNode) tableTypeExpr.getChild(1);
partSpec = getPartSpec(partspec);
}
} else if (child.getType() == HiveParser.KW_EXTENDED) {
isExtended = true;
}
}
}
HiveTxnManager txnManager = null;
try {
txnManager = TxnManagerFactory.getTxnManagerFactory().getTxnManager(conf);
} catch (LockException e) {
throw new SemanticException(e.getMessage());
}
ShowLocksDesc showLocksDesc = new ShowLocksDesc(ctx.getResFile(), tableName,
partSpec, isExtended, txnManager.useNewShowLocksFormat());
rootTasks.add(TaskFactory.get(new DDLWork(getInputs(), getOutputs(),
showLocksDesc), conf));
setFetchTask(createFetchTask(showLocksDesc.getSchema()));
// Need to initialize the lock manager
ctx.setNeedLockMgr(true);
}
/**
* Add the task according to the parsed command tree. This is used for the CLI
* command "SHOW LOCKS DATABASE database [extended];".
*
* @param ast
* The parsed command tree.
* @throws SemanticException
* Parsing failed
*/
private void analyzeShowDbLocks(ASTNode ast) throws SemanticException {
boolean isExtended = (ast.getChildCount() > 1);
String dbName = stripQuotes(ast.getChild(0).getText());
HiveTxnManager txnManager = null;
try {
txnManager = TxnManagerFactory.getTxnManagerFactory().getTxnManager(conf);
} catch (LockException e) {
throw new SemanticException(e.getMessage());
}
ShowLocksDesc showLocksDesc = new ShowLocksDesc(ctx.getResFile(), dbName,
isExtended, txnManager.useNewShowLocksFormat());
rootTasks.add(TaskFactory.get(new DDLWork(getInputs(), getOutputs(),
showLocksDesc), conf));
setFetchTask(createFetchTask(showLocksDesc.getSchema()));
// Need to initialize the lock manager
ctx.setNeedLockMgr(true);
}
private void analyzeShowConf(ASTNode ast) throws SemanticException {
String confName = stripQuotes(ast.getChild(0).getText());
ShowConfDesc showConfDesc = new ShowConfDesc(ctx.getResFile(), confName);
rootTasks.add(TaskFactory.get(new DDLWork(getInputs(), getOutputs(),
showConfDesc), conf));
setFetchTask(createFetchTask(showConfDesc.getSchema()));
}
/**
* Add the task according to the parsed command tree. This is used for the CLI
* command "LOCK TABLE ..;".
*
* @param ast
* The parsed command tree.
* @throws SemanticException
* Parsing failed
*/
private void analyzeLockTable(ASTNode ast)
throws SemanticException {
String tableName = getUnescapedName((ASTNode) ast.getChild(0)).toLowerCase();
String mode = unescapeIdentifier(ast.getChild(1).getText().toUpperCase());
List> partSpecs = getPartitionSpecs(ast);
// We only can have a single partition spec
assert (partSpecs.size() <= 1);
Map partSpec = null;
if (partSpecs.size() > 0) {
partSpec = partSpecs.get(0);
}
LockTableDesc lockTblDesc = new LockTableDesc(tableName, mode, partSpec,
HiveConf.getVar(conf, ConfVars.HIVEQUERYID));
lockTblDesc.setQueryStr(this.ctx.getCmd());
rootTasks.add(TaskFactory.get(new DDLWork(getInputs(), getOutputs(),
lockTblDesc), conf));
// Need to initialize the lock manager
ctx.setNeedLockMgr(true);
}
/**
* Add a task to execute "SHOW COMPACTIONS"
* @param ast The parsed command tree.
* @throws SemanticException Parsing failed.
*/
private void analyzeShowCompactions(ASTNode ast) throws SemanticException {
ShowCompactionsDesc desc = new ShowCompactionsDesc(ctx.getResFile());
rootTasks.add(TaskFactory.get(new DDLWork(getInputs(), getOutputs(), desc), conf));
setFetchTask(createFetchTask(desc.getSchema()));
}
/**
* Add a task to execute "SHOW COMPACTIONS"
* @param ast The parsed command tree.
* @throws SemanticException Parsing failed.
*/
private void analyzeShowTxns(ASTNode ast) throws SemanticException {
ShowTxnsDesc desc = new ShowTxnsDesc(ctx.getResFile());
rootTasks.add(TaskFactory.get(new DDLWork(getInputs(), getOutputs(), desc), conf));
setFetchTask(createFetchTask(desc.getSchema()));
}
/**
* Add the task according to the parsed command tree. This is used for the CLI
* command "UNLOCK TABLE ..;".
*
* @param ast
* The parsed command tree.
* @throws SemanticException
* Parsing failed
*/
private void analyzeUnlockTable(ASTNode ast)
throws SemanticException {
String tableName = getUnescapedName((ASTNode) ast.getChild(0));
List> partSpecs = getPartitionSpecs(ast);
// We only can have a single partition spec
assert (partSpecs.size() <= 1);
Map partSpec = null;
if (partSpecs.size() > 0) {
partSpec = partSpecs.get(0);
}
UnlockTableDesc unlockTblDesc = new UnlockTableDesc(tableName, partSpec);
rootTasks.add(TaskFactory.get(new DDLWork(getInputs(), getOutputs(),
unlockTblDesc), conf));
// Need to initialize the lock manager
ctx.setNeedLockMgr(true);
}
private void analyzeLockDatabase(ASTNode ast) throws SemanticException {
String dbName = unescapeIdentifier(ast.getChild(0).getText());
String mode = unescapeIdentifier(ast.getChild(1).getText().toUpperCase());
//inputs.add(new ReadEntity(dbName));
//outputs.add(new WriteEntity(dbName));
LockDatabaseDesc lockDatabaseDesc = new LockDatabaseDesc(dbName, mode,
HiveConf.getVar(conf, ConfVars.HIVEQUERYID));
lockDatabaseDesc.setQueryStr(ctx.getCmd());
DDLWork work = new DDLWork(getInputs(), getOutputs(), lockDatabaseDesc);
rootTasks.add(TaskFactory.get(work, conf));
ctx.setNeedLockMgr(true);
}
private void analyzeUnlockDatabase(ASTNode ast) throws SemanticException {
String dbName = unescapeIdentifier(ast.getChild(0).getText());
UnlockDatabaseDesc unlockDatabaseDesc = new UnlockDatabaseDesc(dbName);
DDLWork work = new DDLWork(getInputs(), getOutputs(), unlockDatabaseDesc);
rootTasks.add(TaskFactory.get(work, conf));
// Need to initialize the lock manager
ctx.setNeedLockMgr(true);
}
/**
* Add the task according to the parsed command tree. This is used for the CLI
* command "DESCRIBE FUNCTION;".
*
* @param ast
* The parsed command tree.
* @throws SemanticException
* Parsing failed
*/
private void analyzeDescFunction(ASTNode ast) throws SemanticException {
String funcName;
boolean isExtended;
if (ast.getChildCount() == 1) {
funcName = stripQuotes(ast.getChild(0).getText());
isExtended = false;
} else if (ast.getChildCount() == 2) {
funcName = stripQuotes(ast.getChild(0).getText());
isExtended = true;
} else {
throw new SemanticException("Unexpected Tokens at DESCRIBE FUNCTION");
}
DescFunctionDesc descFuncDesc = new DescFunctionDesc(ctx.getResFile(),
funcName, isExtended);
rootTasks.add(TaskFactory.get(new DDLWork(getInputs(), getOutputs(),
descFuncDesc), conf));
setFetchTask(createFetchTask(descFuncDesc.getSchema()));
}
private void analyzeAlterTableRename(String[] source, ASTNode ast, boolean expectView)
throws SemanticException {
String[] target = getQualifiedTableName((ASTNode) ast.getChild(0));
String sourceName = getDotName(source);
String targetName = getDotName(target);
AlterTableDesc alterTblDesc = new AlterTableDesc(sourceName, targetName, expectView);
addInputsOutputsAlterTable(sourceName, null, alterTblDesc);
rootTasks.add(TaskFactory.get(new DDLWork(getInputs(), getOutputs(),
alterTblDesc), conf));
}
private void analyzeAlterTableRenameCol(String[] qualified, ASTNode ast,
HashMap partSpec) throws SemanticException {
String newComment = null;
String newType = null;
newType = getTypeStringFromAST((ASTNode) ast.getChild(2));
boolean first = false;
String flagCol = null;
ASTNode positionNode = null;
if (ast.getChildCount() == 5) {
newComment = unescapeSQLString(ast.getChild(3).getText());
positionNode = (ASTNode) ast.getChild(4);
} else if (ast.getChildCount() == 4) {
if (ast.getChild(3).getType() == HiveParser.StringLiteral) {
newComment = unescapeSQLString(ast.getChild(3).getText());
} else {
positionNode = (ASTNode) ast.getChild(3);
}
}
if (positionNode != null) {
if (positionNode.getChildCount() == 0) {
first = true;
} else {
flagCol = unescapeIdentifier(positionNode.getChild(0).getText());
}
}
String oldColName = ast.getChild(0).getText();
String newColName = ast.getChild(1).getText();
/* Validate the operation of renaming a column name. */
Table tab = getTable(qualified);
SkewedInfo skewInfo = tab.getTTable().getSd().getSkewedInfo();
if ((null != skewInfo)
&& (null != skewInfo.getSkewedColNames())
&& skewInfo.getSkewedColNames().contains(oldColName)) {
throw new SemanticException(oldColName
+ ErrorMsg.ALTER_TABLE_NOT_ALLOWED_RENAME_SKEWED_COLUMN.getMsg());
}
String tblName = getDotName(qualified);
AlterTableDesc alterTblDesc = new AlterTableDesc(tblName, partSpec,
unescapeIdentifier(oldColName), unescapeIdentifier(newColName),
newType, newComment, first, flagCol);
addInputsOutputsAlterTable(tblName, partSpec, alterTblDesc);
rootTasks.add(TaskFactory.get(new DDLWork(getInputs(), getOutputs(),
alterTblDesc), conf));
}
private void analyzeAlterTableRenamePart(ASTNode ast, String tblName,
HashMap oldPartSpec) throws SemanticException {
Map newPartSpec = extractPartitionSpecs(ast.getChild(0));
if (newPartSpec == null) {
throw new SemanticException("RENAME PARTITION Missing Destination" + ast);
}
Table tab = getTable(tblName, true);
validateAlterTableType(tab, AlterTableTypes.RENAMEPARTITION);
ReadEntity re = new ReadEntity(tab);
re.noLockNeeded();
inputs.add(re);
List> partSpecs = new ArrayList>();
partSpecs.add(oldPartSpec);
partSpecs.add(newPartSpec);
addTablePartsOutputs(tab, partSpecs, WriteEntity.WriteType.DDL_EXCLUSIVE);
RenamePartitionDesc renamePartitionDesc = new RenamePartitionDesc(tblName, oldPartSpec, newPartSpec);
rootTasks.add(TaskFactory.get(new DDLWork(getInputs(), getOutputs(),
renamePartitionDesc), conf));
}
private void analyzeAlterTableBucketNum(ASTNode ast, String tblName,
HashMap partSpec) throws SemanticException {
Table tab = getTable(tblName, true);
if (tab.getBucketCols() == null || tab.getBucketCols().isEmpty()) {
throw new SemanticException(ErrorMsg.ALTER_BUCKETNUM_NONBUCKETIZED_TBL.getMsg());
}
validateAlterTableType(tab, AlterTableTypes.ALTERBUCKETNUM);
inputs.add(new ReadEntity(tab));
int bucketNum = Integer.parseInt(ast.getChild(0).getText());
AlterTableDesc alterBucketNum = new AlterTableDesc(tblName, partSpec, bucketNum);
rootTasks.add(TaskFactory.get(new DDLWork(getInputs(), getOutputs(),
alterBucketNum), conf));
}
private void analyzeAlterTableModifyCols(String[] qualified, ASTNode ast,
HashMap partSpec, AlterTableTypes alterType) throws SemanticException {
String tblName = getDotName(qualified);
List newCols = getColumns((ASTNode) ast.getChild(0));
AlterTableDesc alterTblDesc = new AlterTableDesc(tblName, partSpec, newCols,
alterType);
addInputsOutputsAlterTable(tblName, partSpec, alterTblDesc);
rootTasks.add(TaskFactory.get(new DDLWork(getInputs(), getOutputs(),
alterTblDesc), conf));
}
private void analyzeAlterTableDropParts(String[] qualified, ASTNode ast, boolean expectView)
throws SemanticException {
boolean ifExists = (ast.getFirstChildWithType(HiveParser.TOK_IFEXISTS) != null)
|| HiveConf.getBoolVar(conf, ConfVars.DROPIGNORESNONEXISTENT);
// If the drop has to fail on non-existent partitions, we cannot batch expressions.
// That is because we actually have to check each separate expression for existence.
// We could do a small optimization for the case where expr has all columns and all
// operators are equality, if we assume those would always match one partition (which
// may not be true with legacy, non-normalized column values). This is probably a
// popular case but that's kinda hacky. Let's not do it for now.
boolean canGroupExprs = ifExists;
Table tab = getTable(qualified);
Map> partSpecs =
getFullPartitionSpecs(ast, tab, canGroupExprs);
if (partSpecs.isEmpty()) return; // nothing to do
validateAlterTableType(tab, AlterTableTypes.DROPPARTITION, expectView);
ReadEntity re = new ReadEntity(tab);
re.noLockNeeded();
inputs.add(re);
boolean ignoreProtection = ast.getFirstChildWithType(HiveParser.TOK_IGNOREPROTECTION) != null;
addTableDropPartsOutputs(tab, partSpecs.values(), !ifExists, ignoreProtection);
DropTableDesc dropTblDesc =
new DropTableDesc(getDotName(qualified), partSpecs, expectView, ignoreProtection);
rootTasks.add(TaskFactory.get(new DDLWork(getInputs(), getOutputs(), dropTblDesc), conf));
}
private void analyzeAlterTablePartColType(String[] qualified, ASTNode ast)
throws SemanticException {
// check if table exists.
Table tab = getTable(qualified);
inputs.add(new ReadEntity(tab));
// validate the DDL is a valid operation on the table.
validateAlterTableType(tab, AlterTableTypes.ALTERPARTITION, false);
// Alter table ... partition column ( column newtype) only takes one column at a time.
// It must have a column name followed with type.
ASTNode colAst = (ASTNode) ast.getChild(0);
assert(colAst.getChildCount() == 2);
FieldSchema newCol = new FieldSchema();
// get column name
String name = colAst.getChild(0).getText().toLowerCase();
newCol.setName(unescapeIdentifier(name));
// get column type
ASTNode typeChild = (ASTNode) (colAst.getChild(1));
newCol.setType(getTypeStringFromAST(typeChild));
// check if column is defined or not
boolean fFoundColumn = false;
for( FieldSchema col : tab.getTTable().getPartitionKeys()) {
if (col.getName().compareTo(newCol.getName()) == 0) {
fFoundColumn = true;
}
}
// raise error if we could not find the column
if (!fFoundColumn) {
throw new SemanticException(ErrorMsg.INVALID_COLUMN.getMsg(newCol.getName()));
}
AlterTableAlterPartDesc alterTblAlterPartDesc =
new AlterTableAlterPartDesc(getDotName(qualified), newCol);
rootTasks.add(TaskFactory.get(new DDLWork(getInputs(), getOutputs(),
alterTblAlterPartDesc), conf));
}
/**
* Add one or more partitions to a table. Useful when the data has been copied
* to the right location by some other process.
*
* @param ast
* The parsed command tree.
*
* @param expectView
* True for ALTER VIEW, false for ALTER TABLE.
*
* @throws SemanticException
* Parsing failed
*/
private void analyzeAlterTableAddParts(String[] qualified, CommonTree ast, boolean expectView)
throws SemanticException {
// ^(TOK_ALTERTABLE_ADDPARTS identifier ifNotExists? alterStatementSuffixAddPartitionsElement+)
boolean ifNotExists = ast.getChild(0).getType() == HiveParser.TOK_IFNOTEXISTS;
Table tab = getTable(qualified);
boolean isView = tab.isView();
validateAlterTableType(tab, AlterTableTypes.ADDPARTITION, expectView);
outputs.add(new WriteEntity(tab, WriteEntity.WriteType.DDL_SHARED));
int numCh = ast.getChildCount();
int start = ifNotExists ? 1 : 0;
String currentLocation = null;
Map currentPart = null;
// Parser has done some verification, so the order of tokens doesn't need to be verified here.
AddPartitionDesc addPartitionDesc =
new AddPartitionDesc(tab.getDbName(), tab.getTableName(), ifNotExists);
for (int num = start; num < numCh; num++) {
ASTNode child = (ASTNode) ast.getChild(num);
switch (child.getToken().getType()) {
case HiveParser.TOK_PARTSPEC:
if (currentPart != null) {
addPartitionDesc.addPartition(currentPart, currentLocation);
currentLocation = null;
}
currentPart = getPartSpec(child);
validatePartitionValues(currentPart); // validate reserved values
validatePartSpec(tab, currentPart, child, conf, true);
break;
case HiveParser.TOK_PARTITIONLOCATION:
// if location specified, set in partition
if (isView) {
throw new SemanticException("LOCATION clause illegal for view partition");
}
currentLocation = unescapeSQLString(child.getChild(0).getText());
boolean isLocal = false;
try {
// do best effort to determine if this is a local file
String scheme = new URI(currentLocation).getScheme();
if (scheme != null) {
isLocal = FileUtils.isLocalFile(conf, currentLocation);
}
} catch (URISyntaxException e) {
LOG.warn("Unable to create URI from " + currentLocation, e);
}
inputs.add(new ReadEntity(new Path(currentLocation), isLocal));
break;
default:
throw new SemanticException("Unknown child: " + child);
}
}
// add the last one
if (currentPart != null) {
addPartitionDesc.addPartition(currentPart, currentLocation);
}
if (addPartitionDesc.getPartitionCount() == 0) {
// nothing to do
return;
}
rootTasks.add(TaskFactory.get(new DDLWork(getInputs(), getOutputs(), addPartitionDesc), conf));
if (isView) {
// Compile internal query to capture underlying table partition dependencies
StringBuilder cmd = new StringBuilder();
cmd.append("SELECT * FROM ");
cmd.append(HiveUtils.unparseIdentifier(getDotName(qualified)));
cmd.append(" WHERE ");
boolean firstOr = true;
for (int i = 0; i < addPartitionDesc.getPartitionCount(); ++i) {
AddPartitionDesc.OnePartitionDesc partitionDesc = addPartitionDesc.getPartition(i);
if (firstOr) {
firstOr = false;
} else {
cmd.append(" OR ");
}
boolean firstAnd = true;
cmd.append("(");
for (Map.Entry entry : partitionDesc.getPartSpec().entrySet()) {
if (firstAnd) {
firstAnd = false;
} else {
cmd.append(" AND ");
}
cmd.append(HiveUtils.unparseIdentifier(entry.getKey(), conf));
cmd.append(" = '");
cmd.append(HiveUtils.escapeString(entry.getValue()));
cmd.append("'");
}
cmd.append(")");
}
Driver driver = new Driver(conf);
int rc = driver.compile(cmd.toString(), false);
if (rc != 0) {
throw new SemanticException(ErrorMsg.NO_VALID_PARTN.getMsg());
}
inputs.addAll(driver.getPlan().getInputs());
}
}
private Partition getPartitionForOutput(Table tab, Map currentPart)
throws SemanticException {
validatePartitionValues(currentPart);
try {
Partition partition = db.getPartition(tab, currentPart, false);
if (partition != null) {
outputs.add(new WriteEntity(partition, WriteEntity.WriteType.INSERT));
}
return partition;
} catch (HiveException e) {
LOG.warn("wrong partition spec " + currentPart);
}
return null;
}
/**
* Rewrite the metadata for one or more partitions in a table. Useful when
* an external process modifies files on HDFS and you want the pre/post
* hooks to be fired for the specified partition.
*
* @param ast
* The parsed command tree.
* @throws SemanticException
* Parsin failed
*/
private void analyzeAlterTableTouch(String[] qualified, CommonTree ast)
throws SemanticException {
Table tab = getTable(qualified);
validateAlterTableType(tab, AlterTableTypes.TOUCH);
inputs.add(new ReadEntity(tab));
// partition name to value
List> partSpecs = getPartitionSpecs(ast);
if (partSpecs.size() == 0) {
AlterTableSimpleDesc touchDesc = new AlterTableSimpleDesc(
getDotName(qualified), null,
AlterTableDesc.AlterTableTypes.TOUCH);
outputs.add(new WriteEntity(tab, WriteEntity.WriteType.DDL_NO_LOCK));
rootTasks.add(TaskFactory.get(new DDLWork(getInputs(), getOutputs(),
touchDesc), conf));
} else {
addTablePartsOutputs(tab, partSpecs, WriteEntity.WriteType.DDL_NO_LOCK);
for (Map partSpec : partSpecs) {
AlterTableSimpleDesc touchDesc = new AlterTableSimpleDesc(
getDotName(qualified), partSpec,
AlterTableDesc.AlterTableTypes.TOUCH);
rootTasks.add(TaskFactory.get(new DDLWork(getInputs(), getOutputs(),
touchDesc), conf));
}
}
}
private void analyzeAlterTableArchive(String[] qualified, CommonTree ast, boolean isUnArchive)
throws SemanticException {
if (!conf.getBoolVar(HiveConf.ConfVars.HIVEARCHIVEENABLED)) {
throw new SemanticException(ErrorMsg.ARCHIVE_METHODS_DISABLED.getMsg());
}
// partition name to value
List> partSpecs = getPartitionSpecs(ast);
Table tab = getTable(qualified);
addTablePartsOutputs(tab, partSpecs, true, WriteEntity.WriteType.DDL_NO_LOCK);
validateAlterTableType(tab, AlterTableTypes.ARCHIVE);
inputs.add(new ReadEntity(tab));
if (partSpecs.size() > 1) {
throw new SemanticException(isUnArchive ?
ErrorMsg.UNARCHIVE_ON_MULI_PARTS.getMsg() :
ErrorMsg.ARCHIVE_ON_MULI_PARTS.getMsg());
}
if (partSpecs.size() == 0) {
throw new SemanticException(ErrorMsg.ARCHIVE_ON_TABLE.getMsg());
}
Map partSpec = partSpecs.get(0);
try {
isValidPrefixSpec(tab, partSpec);
} catch (HiveException e) {
throw new SemanticException(e.getMessage(), e);
}
AlterTableSimpleDesc archiveDesc = new AlterTableSimpleDesc(
getDotName(qualified), partSpec,
(isUnArchive ? AlterTableTypes.UNARCHIVE : AlterTableTypes.ARCHIVE));
rootTasks.add(TaskFactory.get(new DDLWork(getInputs(), getOutputs(),
archiveDesc), conf));
}
/**
* Verify that the information in the metastore matches up with the data on
* the fs.
*
* @param ast
* Query tree.
* @throws SemanticException
*/
private void analyzeMetastoreCheck(CommonTree ast) throws SemanticException {
String tableName = null;
boolean repair = false;
if (ast.getChildCount() > 0) {
repair = ast.getChild(0).getType() == HiveParser.KW_REPAIR;
if (!repair) {
tableName = getUnescapedName((ASTNode) ast.getChild(0));
} else if (ast.getChildCount() > 1) {
tableName = getUnescapedName((ASTNode) ast.getChild(1));
}
}
List> specs = getPartitionSpecs(ast);
MsckDesc checkDesc = new MsckDesc(tableName, specs, ctx.getResFile(),
repair);
rootTasks.add(TaskFactory.get(new DDLWork(getInputs(), getOutputs(),
checkDesc), conf));
}
/**
* Get the partition specs from the tree.
*
* @param ast
* Tree to extract partitions from.
* @return A list of partition name to value mappings.
* @throws SemanticException
*/
private List> getPartitionSpecs(CommonTree ast)
throws SemanticException {
List> partSpecs = new ArrayList>();
int childIndex = 0;
// get partition metadata if partition specified
for (childIndex = 0; childIndex < ast.getChildCount(); childIndex++) {
Tree partspec = ast.getChild(childIndex);
// sanity check
if (partspec.getType() == HiveParser.TOK_PARTSPEC) {
partSpecs.add(getPartSpec((ASTNode) partspec));
}
}
return partSpecs;
}
/**
* Get the partition specs from the tree. This stores the full specification
* with the comparator operator into the output list.
*
* @param ast Tree to extract partitions from.
* @param tab Table.
* @param result Map of partitions by prefix length. Most of the time prefix length will
* be the same for all partition specs, so we can just OR the expressions.
*/
private Map> getFullPartitionSpecs(
CommonTree ast, Table tab, boolean canGroupExprs) throws SemanticException {
Map colTypes = new HashMap();
for (FieldSchema fs : tab.getPartitionKeys()) {
colTypes.put(fs.getName().toLowerCase(), fs.getType());
}
Map> result =
new HashMap>();
for (int childIndex = 0; childIndex < ast.getChildCount(); childIndex++) {
Tree partSpecTree = ast.getChild(childIndex);
if (partSpecTree.getType() != HiveParser.TOK_PARTSPEC) continue;
ExprNodeGenericFuncDesc expr = null;
HashSet names = new HashSet(partSpecTree.getChildCount());
for (int i = 0; i < partSpecTree.getChildCount(); ++i) {
CommonTree partSpecSingleKey = (CommonTree) partSpecTree.getChild(i);
assert (partSpecSingleKey.getType() == HiveParser.TOK_PARTVAL);
String key = partSpecSingleKey.getChild(0).getText().toLowerCase();
String operator = partSpecSingleKey.getChild(1).getText();
String val = stripQuotes(partSpecSingleKey.getChild(2).getText());
String type = colTypes.get(key);
if (type == null) {
throw new SemanticException("Column " + key + " not found");
}
// Create the corresponding hive expression to filter on partition columns.
PrimitiveTypeInfo pti = TypeInfoFactory.getPrimitiveTypeInfo(type);
Converter converter = ObjectInspectorConverters.getConverter(
TypeInfoUtils.getStandardJavaObjectInspectorFromTypeInfo(TypeInfoFactory.stringTypeInfo),
TypeInfoUtils.getStandardJavaObjectInspectorFromTypeInfo(pti));
ExprNodeColumnDesc column = new ExprNodeColumnDesc(pti, key, null, true);
ExprNodeGenericFuncDesc op = makeBinaryPredicate(
operator, column, new ExprNodeConstantDesc(pti, converter.convert(val)));
// If it's multi-expr filter (e.g. a='5', b='2012-01-02'), AND with previous exprs.
expr = (expr == null) ? op : makeBinaryPredicate("and", expr, op);
names.add(key);
}
if (expr == null) continue;
// We got the expr for one full partition spec. Determine the prefix length.
int prefixLength = calculatePartPrefix(tab, names);
List orExpr = result.get(prefixLength);
// We have to tell apart partitions resulting from spec with different prefix lengths.
// So, if we already have smth for the same prefix length, we can OR the two.
// If we don't, create a new separate filter. In most cases there will only be one.
if (orExpr == null) {
result.put(prefixLength, Lists.newArrayList(expr));
} else if (canGroupExprs) {
orExpr.set(0, makeBinaryPredicate("or", expr, orExpr.get(0)));
} else {
orExpr.add(expr);
}
}
return result;
}
private static ExprNodeGenericFuncDesc makeBinaryPredicate(
String fn, ExprNodeDesc left, ExprNodeDesc right) throws SemanticException {
return new ExprNodeGenericFuncDesc(TypeInfoFactory.booleanTypeInfo,
FunctionRegistry.getFunctionInfo(fn).getGenericUDF(), Lists.newArrayList(left, right));
}
/**
* Calculates the partition prefix length based on the drop spec.
* This is used to avoid deleting archived partitions with lower level.
* For example, if, for A and B key cols, drop spec is A=5, B=6, we shouldn't drop
* archived A=5/, because it can contain B-s other than 6.
* @param tbl Table
* @param partSpecKeys Keys present in drop partition spec.
*/
private int calculatePartPrefix(Table tbl, HashSet partSpecKeys) {
int partPrefixToDrop = 0;
for (FieldSchema fs : tbl.getPartCols()) {
if (!partSpecKeys.contains(fs.getName())) break;
++partPrefixToDrop;
}
return partPrefixToDrop;
}
/**
* Certain partition values are are used by hive. e.g. the default partition
* in dynamic partitioning and the intermediate partition values used in the
* archiving process. Naturally, prohibit the user from creating partitions
* with these reserved values. The check that this function is more
* restrictive than the actual limitation, but it's simpler. Should be okay
* since the reserved names are fairly long and uncommon.
*/
private void validatePartitionValues(Map partSpec)
throws SemanticException {
for (Entry e : partSpec.entrySet()) {
for (String s : reservedPartitionValues) {
if (e.getValue().contains(s)) {
throw new SemanticException(ErrorMsg.RESERVED_PART_VAL.getMsg(
"(User value: " + e.getValue() + " Reserved substring: " + s + ")"));
}
}
}
}
/**
* Add the table partitions to be modified in the output, so that it is available for the
* pre-execution hook. If the partition does not exist, no error is thrown.
*/
private void addTablePartsOutputs(Table table, List> partSpecs,
WriteEntity.WriteType writeType)
throws SemanticException {
addTablePartsOutputs(table, partSpecs, false, false, null, writeType);
}
/**
* Add the table partitions to be modified in the output, so that it is available for the
* pre-execution hook. If the partition does not exist, no error is thrown.
*/
private void addTablePartsOutputs(Table table, List> partSpecs,
boolean allowMany, WriteEntity.WriteType writeType)
throws SemanticException {
addTablePartsOutputs(table, partSpecs, false, allowMany, null, writeType);
}
/**
* Add the table partitions to be modified in the output, so that it is available for the
* pre-execution hook. If the partition does not exist, throw an error if
* throwIfNonExistent is true, otherwise ignore it.
*/
private void addTablePartsOutputs(Table table, List> partSpecs,
boolean throwIfNonExistent, boolean allowMany, ASTNode ast, WriteEntity.WriteType writeType)
throws SemanticException {
Iterator> i;
int index;
for (i = partSpecs.iterator(), index = 1; i.hasNext(); ++index) {
Map partSpec = i.next();
List parts = null;
if (allowMany) {
try {
parts = db.getPartitions(table, partSpec);
} catch (HiveException e) {
LOG.error("Got HiveException during obtaining list of partitions"
+ StringUtils.stringifyException(e));
throw new SemanticException(e.getMessage(), e);
}
} else {
parts = new ArrayList();
try {
Partition p = db.getPartition(table, partSpec, false);
if (p != null) {
parts.add(p);
}
} catch (HiveException e) {
LOG.debug("Wrong specification" + StringUtils.stringifyException(e));
throw new SemanticException(e.getMessage(), e);
}
}
if (parts.isEmpty()) {
if (throwIfNonExistent) {
throw new SemanticException(ErrorMsg.INVALID_PARTITION.getMsg(ast.getChild(index)));
}
}
for (Partition p : parts) {
// Don't request any locks here, as the table has already been locked.
outputs.add(new WriteEntity(p, writeType));
}
}
}
/**
* Add the table partitions to be modified in the output, so that it is available for the
* pre-execution hook. If the partition does not exist, throw an error if
* throwIfNonExistent is true, otherwise ignore it.
*/
private void addTableDropPartsOutputs(Table tab,
Collection> partSpecs, boolean throwIfNonExistent,
boolean ignoreProtection) throws SemanticException {
for (List specs : partSpecs) {
for (ExprNodeGenericFuncDesc partSpec : specs) {
List parts = new ArrayList();
boolean hasUnknown = false;
try {
hasUnknown = db.getPartitionsByExpr(tab, partSpec, conf, parts);
} catch (Exception e) {
throw new SemanticException(
ErrorMsg.INVALID_PARTITION.getMsg(partSpec.getExprString()), e);
}
if (hasUnknown) {
throw new SemanticException(
"Unexpected unknown partitions for " + partSpec.getExprString());
}
// TODO: ifExists could be moved to metastore. In fact it already supports that. Check it
// for now since we get parts for output anyway, so we can get the error message
// earlier... If we get rid of output, we can get rid of this.
if (parts.isEmpty()) {
if (throwIfNonExistent) {
throw new SemanticException(
ErrorMsg.INVALID_PARTITION.getMsg(partSpec.getExprString()));
}
}
for (Partition p : parts) {
// TODO: same thing, metastore already checks this but check here if we can.
if (!ignoreProtection && !p.canDrop()) {
throw new SemanticException(
ErrorMsg.DROP_COMMAND_NOT_ALLOWED_FOR_PARTITION.getMsg(p.getCompleteName()));
}
outputs.add(new WriteEntity(p, WriteEntity.WriteType.DDL_EXCLUSIVE));
}
}
}
}
/**
* Analyze alter table's skewed table
*
* @param ast
* node
* @throws SemanticException
*/
private void analyzeAltertableSkewedby(String[] qualified, ASTNode ast) throws SemanticException {
/**
* Throw an error if the user tries to use the DDL with
* hive.internal.ddl.list.bucketing.enable set to false.
*/
HiveConf hiveConf = SessionState.get().getConf();
Table tab = getTable(qualified);
inputs.add(new ReadEntity(tab));
outputs.add(new WriteEntity(tab, WriteEntity.WriteType.DDL_EXCLUSIVE));
validateAlterTableType(tab, AlterTableTypes.ADDSKEWEDBY);
String tableName = getDotName(qualified);
if (ast.getChildCount() == 0) {
/* Convert a skewed table to non-skewed table. */
AlterTableDesc alterTblDesc = new AlterTableDesc(tableName, true,
new ArrayList(), new ArrayList>());
alterTblDesc.setStoredAsSubDirectories(false);
rootTasks.add(TaskFactory.get(new DDLWork(getInputs(), getOutputs(),
alterTblDesc), conf));
} else {
switch (((ASTNode) ast.getChild(0)).getToken().getType()) {
case HiveParser.TOK_TABLESKEWED:
handleAlterTableSkewedBy(ast, tableName, tab);
break;
case HiveParser.TOK_STOREDASDIRS:
handleAlterTableDisableStoredAsDirs(tableName, tab);
break;
default:
assert false;
}
}
}
/**
* Handle alter table not stored as directories
*
* @param tableName
* @param tab
* @throws SemanticException
*/
private void handleAlterTableDisableStoredAsDirs(String tableName, Table tab)
throws SemanticException {
List skewedColNames = tab.getSkewedColNames();
List> skewedColValues = tab.getSkewedColValues();
if ((skewedColNames == null) || (skewedColNames.size() == 0) || (skewedColValues == null)
|| (skewedColValues.size() == 0)) {
throw new SemanticException(ErrorMsg.ALTER_TBL_STOREDASDIR_NOT_SKEWED.getMsg(tableName));
}
AlterTableDesc alterTblDesc = new AlterTableDesc(tableName, false,
skewedColNames, skewedColValues);
alterTblDesc.setStoredAsSubDirectories(false);
rootTasks.add(TaskFactory.get(new DDLWork(getInputs(), getOutputs(),
alterTblDesc), conf));
}
/**
* Process "alter table skewed by .. on .. stored as directories
* @param ast
* @param tableName
* @param tab
* @throws SemanticException
*/
private void handleAlterTableSkewedBy(ASTNode ast, String tableName, Table tab)
throws SemanticException {
List skewedColNames = new ArrayList();
List> skewedValues = new ArrayList>();
/* skewed column names. */
ASTNode skewedNode = (ASTNode) ast.getChild(0);
skewedColNames = analyzeSkewedTablDDLColNames(skewedColNames, skewedNode);
/* skewed value. */
analyzeDDLSkewedValues(skewedValues, skewedNode);
// stored as directories
boolean storedAsDirs = analyzeStoredAdDirs(skewedNode);
AlterTableDesc alterTblDesc = new AlterTableDesc(tableName, false,
skewedColNames, skewedValues);
alterTblDesc.setStoredAsSubDirectories(storedAsDirs);
/**
* Validate information about skewed table
*/
alterTblDesc.setTable(tab);
alterTblDesc.validate();
rootTasks.add(TaskFactory.get(new DDLWork(getInputs(), getOutputs(),
alterTblDesc), conf));
}
/**
* Analyze skewed column names
*
* @param skewedColNames
* @param child
* @return
* @throws SemanticException
*/
private List analyzeAlterTableSkewedColNames(List skewedColNames,
ASTNode child) throws SemanticException {
Tree nNode = child.getChild(0);
if (nNode == null) {
throw new SemanticException(ErrorMsg.SKEWED_TABLE_NO_COLUMN_NAME.getMsg());
} else {
ASTNode nAstNode = (ASTNode) nNode;
if (nAstNode.getToken().getType() != HiveParser.TOK_TABCOLNAME) {
throw new SemanticException(ErrorMsg.SKEWED_TABLE_NO_COLUMN_NAME.getMsg());
} else {
skewedColNames = getColumnNames(nAstNode);
}
}
return skewedColNames;
}
/**
* Given a ASTNode, return list of values.
*
* use case:
* create table xyz list bucketed (col1) with skew (1,2,5)
* AST Node is for (1,2,5)
*
* @param ast
* @return
*/
private List getColumnValues(ASTNode ast) {
List colList = new ArrayList();
int numCh = ast.getChildCount();
for (int i = 0; i < numCh; i++) {
ASTNode child = (ASTNode) ast.getChild(i);
colList.add(stripQuotes(child.getText()).toLowerCase());
}
return colList;
}
/**
* Analyze alter table's skewed location
*
* @param ast
* @param tableName
* @param partSpec
* @throws SemanticException
*/
private void analyzeAlterTableSkewedLocation(ASTNode ast, String tableName,
HashMap partSpec) throws SemanticException {
/**
* Throw an error if the user tries to use the DDL with
* hive.internal.ddl.list.bucketing.enable set to false.
*/
HiveConf hiveConf = SessionState.get().getConf();
/**
* Retrieve mappings from parser
*/
Map, String> locations = new HashMap, String>();
ArrayList locNodes = ast.getChildren();
if (null == locNodes) {
throw new SemanticException(ErrorMsg.ALTER_TBL_SKEWED_LOC_NO_LOC.getMsg());
} else {
for (Node locNode : locNodes) {
// TOK_SKEWED_LOCATIONS
ASTNode locAstNode = (ASTNode) locNode;
ArrayList locListNodes = locAstNode.getChildren();
if (null == locListNodes) {
throw new SemanticException(ErrorMsg.ALTER_TBL_SKEWED_LOC_NO_LOC.getMsg());
} else {
for (Node locListNode : locListNodes) {
// TOK_SKEWED_LOCATION_LIST
ASTNode locListAstNode = (ASTNode) locListNode;
ArrayList locMapNodes = locListAstNode.getChildren();
if (null == locMapNodes) {
throw new SemanticException(ErrorMsg.ALTER_TBL_SKEWED_LOC_NO_LOC.getMsg());
} else {
for (Node locMapNode : locMapNodes) {
// TOK_SKEWED_LOCATION_MAP
ASTNode locMapAstNode = (ASTNode) locMapNode;
ArrayList locMapAstNodeMaps = locMapAstNode.getChildren();
if ((null == locMapAstNodeMaps) || (locMapAstNodeMaps.size() != 2)) {
throw new SemanticException(ErrorMsg.ALTER_TBL_SKEWED_LOC_NO_MAP.getMsg());
} else {
List keyList = new LinkedList();
ASTNode node = (ASTNode) locMapAstNodeMaps.get(0);
if (node.getToken().getType() == HiveParser.TOK_TABCOLVALUES) {
keyList = getSkewedValuesFromASTNode(node);
} else if (isConstant(node)) {
keyList.add(PlanUtils
.stripQuotes(node.getText()));
} else {
throw new SemanticException(ErrorMsg.SKEWED_TABLE_NO_COLUMN_VALUE.getMsg());
}
String newLocation = PlanUtils
.stripQuotes(unescapeSQLString(((ASTNode) locMapAstNodeMaps.get(1))
.getText()));
validateSkewedLocationString(newLocation);
locations.put(keyList, newLocation);
addLocationToOutputs(newLocation);
}
}
}
}
}
}
}
AlterTableDesc alterTblDesc = new AlterTableDesc(tableName, locations, partSpec);
addInputsOutputsAlterTable(tableName, partSpec);
rootTasks.add(TaskFactory.get(new DDLWork(getInputs(), getOutputs(),
alterTblDesc), conf));
}
private void addLocationToOutputs(String newLocation) {
outputs.add(new WriteEntity(new Path(newLocation), FileUtils.isLocalFile(conf, newLocation)));
}
/**
* Check if the node is constant.
*
* @param node
* @return
*/
private boolean isConstant(ASTNode node) {
boolean result = false;
switch(node.getToken().getType()) {
case HiveParser.Number:
result = true;
break;
case HiveParser.StringLiteral:
result = true;
break;
case HiveParser.BigintLiteral:
result = true;
break;
case HiveParser.SmallintLiteral:
result = true;
break;
case HiveParser.TinyintLiteral:
result = true;
break;
case HiveParser.DecimalLiteral:
result = true;
break;
case HiveParser.CharSetName:
result = true;
break;
case HiveParser.KW_TRUE:
case HiveParser.KW_FALSE:
result = true;
break;
default:
break;
}
return result;
}
private void validateSkewedLocationString(String newLocation) throws SemanticException {
/* Validate location string. */
try {
URI locUri = new URI(newLocation);
if (!locUri.isAbsolute() || locUri.getScheme() == null
|| locUri.getScheme().trim().equals("")) {
throw new SemanticException(
newLocation
+ " is not absolute or has no scheme information. "
+ "Please specify a complete absolute uri with scheme information.");
}
} catch (URISyntaxException e) {
throw new SemanticException(e);
}
}
}
