org.apache.hadoop.hbase.client.Admin 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.hbase.client;
import java.io.Closeable;
import java.io.IOException;
import java.util.Collection;
import java.util.EnumSet;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.concurrent.Future;
import java.util.regex.Pattern;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.hbase.Abortable;
import org.apache.hadoop.hbase.CacheEvictionStats;
import org.apache.hadoop.hbase.ClusterMetrics;
import org.apache.hadoop.hbase.ClusterMetrics.Option;
import org.apache.hadoop.hbase.ClusterStatus;
import org.apache.hadoop.hbase.HRegionInfo;
import org.apache.hadoop.hbase.HTableDescriptor;
import org.apache.hadoop.hbase.NamespaceDescriptor;
import org.apache.hadoop.hbase.NamespaceNotFoundException;
import org.apache.hadoop.hbase.RegionMetrics;
import org.apache.hadoop.hbase.ServerName;
import org.apache.hadoop.hbase.TableExistsException;
import org.apache.hadoop.hbase.TableName;
import org.apache.hadoop.hbase.TableNotFoundException;
import org.apache.hadoop.hbase.client.replication.TableCFs;
import org.apache.hadoop.hbase.client.security.SecurityCapability;
import org.apache.hadoop.hbase.ipc.CoprocessorRpcChannel;
import org.apache.hadoop.hbase.quotas.QuotaFilter;
import org.apache.hadoop.hbase.quotas.QuotaRetriever;
import org.apache.hadoop.hbase.quotas.QuotaSettings;
import org.apache.hadoop.hbase.regionserver.wal.FailedLogCloseException;
import org.apache.hadoop.hbase.replication.ReplicationException;
import org.apache.hadoop.hbase.replication.ReplicationPeerConfig;
import org.apache.hadoop.hbase.replication.ReplicationPeerDescription;
import org.apache.hadoop.hbase.snapshot.HBaseSnapshotException;
import org.apache.hadoop.hbase.snapshot.RestoreSnapshotException;
import org.apache.hadoop.hbase.snapshot.SnapshotCreationException;
import org.apache.hadoop.hbase.snapshot.UnknownSnapshotException;
import org.apache.hadoop.hbase.util.Pair;
import org.apache.yetus.audience.InterfaceAudience;
/**
* The administrative API for HBase. Obtain an instance from {@link Connection#getAdmin()} and
* call {@link #close()} when done.
* Admin can be used to create, drop, list, enable and disable and otherwise modify tables,
* as well as perform other administrative operations.
*
* @see ConnectionFactory
* @see Connection
* @see Table
* @since 0.99.0
*/
@InterfaceAudience.Public
public interface Admin extends Abortable, Closeable {
int getOperationTimeout();
@Override
void abort(String why, Throwable e);
@Override
boolean isAborted();
/**
* @return Connection used by this object.
*/
Connection getConnection();
/**
* @param tableName Table to check.
* @return true if table exists already.
* @throws IOException
*/
boolean tableExists(TableName tableName) throws IOException;
/**
* List all the userspace tables.
*
* @return an array of read-only HTableDescriptors
* @throws IOException if a remote or network exception occurs
* @deprecated since 2.0 version and will be removed in 3.0 version.
* Use {@link #listTableDescriptors()}.
* @see #listTableDescriptors()
*/
@Deprecated
HTableDescriptor[] listTables() throws IOException;
/**
* List all the userspace tables.
*
* @return a list of TableDescriptors
* @throws IOException if a remote or network exception occurs
*/
List listTableDescriptors() throws IOException;
/**
* List all the userspace tables that match the given pattern.
*
* @param pattern The compiled regular expression to match against
* @return an array of read-only HTableDescriptors
* @throws IOException if a remote or network exception occurs
* @see #listTables()
* @deprecated since 2.0 version and will be removed in 3.0 version.
* Use {@link #listTableDescriptors(java.util.regex.Pattern)}.
* @see #listTableDescriptors(Pattern)
*/
@Deprecated
HTableDescriptor[] listTables(Pattern pattern) throws IOException;
/**
* List all the userspace tables that match the given pattern.
*
* @param pattern The compiled regular expression to match against
* @return a list of TableDescriptors
* @throws IOException if a remote or network exception occurs
* @see #listTables()
*/
List listTableDescriptors(Pattern pattern) throws IOException;
/**
* List all the userspace tables matching the given regular expression.
*
* @param regex The regular expression to match against
* @return a list of read-only HTableDescriptors
* @throws IOException if a remote or network exception occurs
* @see #listTableDescriptors(Pattern)
* @deprecated since 2.0 version and will be removed in 3.0 version. Use
* {@link #listTableDescriptors(Pattern)} instead.
*/
@Deprecated
HTableDescriptor[] listTables(String regex) throws IOException;
/**
* List all the tables matching the given pattern.
*
* @param pattern The compiled regular expression to match against
* @param includeSysTables false to match only against userspace tables
* @return an array of read-only HTableDescriptors
* @throws IOException if a remote or network exception occurs
* @see #listTables()
* @deprecated since 2.0 version and will be removed in 3.0 version.
* Use {@link #listTableDescriptors(java.util.regex.Pattern, boolean)}.
* @see #listTableDescriptors(java.util.regex.Pattern, boolean)
*/
@Deprecated
HTableDescriptor[] listTables(Pattern pattern, boolean includeSysTables)
throws IOException;
/**
* List all the tables matching the given pattern.
*
* @param pattern The compiled regular expression to match against
* @param includeSysTables false to match only against userspace tables
* @return a list of TableDescriptors
* @throws IOException if a remote or network exception occurs
* @see #listTables()
*/
List listTableDescriptors(Pattern pattern, boolean includeSysTables)
throws IOException;
/**
* List all the tables matching the given pattern.
*
* @param regex The regular expression to match against
* @param includeSysTables false to match only against userspace tables
* @return an array of read-only HTableDescriptors
* @throws IOException if a remote or network exception occurs
* @see #listTables(java.util.regex.Pattern, boolean)
* @deprecated since 2.0 version and will be removed in 3.0 version.
* Use {@link #listTableDescriptors(Pattern, boolean)}.
*/
@Deprecated
HTableDescriptor[] listTables(String regex, boolean includeSysTables)
throws IOException;
/**
* List all of the names of userspace tables.
*
* @return TableName[] table names
* @throws IOException if a remote or network exception occurs
*/
TableName[] listTableNames() throws IOException;
/**
* List all of the names of userspace tables.
* @param pattern The regular expression to match against
* @return array of table names
* @throws IOException if a remote or network exception occurs
*/
TableName[] listTableNames(Pattern pattern) throws IOException;
/**
* List all of the names of userspace tables.
* @param regex The regular expression to match against
* @return TableName[] table names
* @throws IOException if a remote or network exception occurs
* @deprecated since 2.0 version and will be removed in 3.0 version. Use
* {@link #listTableNames(Pattern)} instead.
*/
@Deprecated
TableName[] listTableNames(String regex) throws IOException;
/**
* List all of the names of userspace tables.
* @param pattern The regular expression to match against
* @param includeSysTables false to match only against userspace tables
* @return TableName[] table names
* @throws IOException if a remote or network exception occurs
*/
TableName[] listTableNames(Pattern pattern, boolean includeSysTables)
throws IOException;
/**
* List all of the names of userspace tables.
* @param regex The regular expression to match against
* @param includeSysTables false to match only against userspace tables
* @return TableName[] table names
* @throws IOException if a remote or network exception occurs
* @deprecated since 2.0 version and will be removed in 3.0 version. Use
* {@link #listTableNames(Pattern, boolean)} instead.
*/
@Deprecated
TableName[] listTableNames(String regex, boolean includeSysTables)
throws IOException;
/**
* Get a table descriptor.
*
* @param tableName as a {@link TableName}
* @return the read-only tableDescriptor
* @throws org.apache.hadoop.hbase.TableNotFoundException
* @throws IOException if a remote or network exception occurs
* @deprecated since 2.0 version and will be removed in 3.0 version.
* Use {@link #getDescriptor(TableName)}.
*/
@Deprecated
HTableDescriptor getTableDescriptor(TableName tableName)
throws TableNotFoundException, IOException;
/**
* Get a table descriptor.
*
* @param tableName as a {@link TableName}
* @return the tableDescriptor
* @throws org.apache.hadoop.hbase.TableNotFoundException
* @throws IOException if a remote or network exception occurs
*/
TableDescriptor getDescriptor(TableName tableName)
throws TableNotFoundException, IOException;
/**
* Creates a new table. Synchronous operation.
*
* @param desc table descriptor for table
* @throws IllegalArgumentException if the table name is reserved
* @throws org.apache.hadoop.hbase.MasterNotRunningException if master is not running
* @throws org.apache.hadoop.hbase.TableExistsException if table already exists (If concurrent
* threads, the table may have been created between test-for-existence and attempt-at-creation).
* @throws IOException if a remote or network exception occurs
*/
void createTable(TableDescriptor desc) throws IOException;
/**
* Creates a new table with the specified number of regions. The start key specified will become
* the end key of the first region of the table, and the end key specified will become the start
* key of the last region of the table (the first region has a null start key and the last region
* has a null end key). BigInteger math will be used to divide the key range specified into enough
* segments to make the required number of total regions. Synchronous operation.
*
* @param desc table descriptor for table
* @param startKey beginning of key range
* @param endKey end of key range
* @param numRegions the total number of regions to create
* @throws IllegalArgumentException if the table name is reserved
* @throws org.apache.hadoop.hbase.MasterNotRunningException if master is not running
* @throws org.apache.hadoop.hbase.TableExistsException if table already exists (If concurrent
* threads, the table may have been created between test-for-existence and attempt-at-creation).
* @throws IOException
*/
void createTable(TableDescriptor desc, byte[] startKey, byte[] endKey, int numRegions)
throws IOException;
/**
* Creates a new table with an initial set of empty regions defined by the specified split keys.
* The total number of regions created will be the number of split keys plus one. Synchronous
* operation. Note : Avoid passing empty split key.
*
* @param desc table descriptor for table
* @param splitKeys array of split keys for the initial regions of the table
* @throws IllegalArgumentException if the table name is reserved, if the split keys are repeated
* and if the split key has empty byte array.
* @throws org.apache.hadoop.hbase.MasterNotRunningException if master is not running
* @throws org.apache.hadoop.hbase.TableExistsException if table already exists (If concurrent
* threads, the table may have been created between test-for-existence and attempt-at-creation).
* @throws IOException
*/
void createTable(TableDescriptor desc, byte[][] splitKeys) throws IOException;
/**
* Creates a new table but does not block and wait for it to come online.
* You can use Future.get(long, TimeUnit) to wait on the operation to complete.
* It may throw ExecutionException if there was an error while executing the operation
* or TimeoutException in case the wait timeout was not long enough to allow the
* operation to complete.
* Throws IllegalArgumentException Bad table name, if the split keys
* are repeated and if the split key has empty byte array.
*
* @param desc table descriptor for table
* @param splitKeys keys to check if the table has been created with all split keys
* @throws IOException if a remote or network exception occurs
* @return the result of the async creation. You can use Future.get(long, TimeUnit)
* to wait on the operation to complete.
*/
Future createTableAsync(TableDescriptor desc, byte[][] splitKeys)
throws IOException;
/**
* Deletes a table. Synchronous operation.
*
* @param tableName name of table to delete
* @throws IOException if a remote or network exception occurs
*/
void deleteTable(TableName tableName) throws IOException;
/**
* Deletes the table but does not block and wait for it to be completely removed.
* You can use Future.get(long, TimeUnit) to wait on the operation to complete.
* It may throw ExecutionException if there was an error while executing the operation
* or TimeoutException in case the wait timeout was not long enough to allow the
* operation to complete.
*
* @param tableName name of table to delete
* @throws IOException if a remote or network exception occurs
* @return the result of the async delete. You can use Future.get(long, TimeUnit)
* to wait on the operation to complete.
*/
Future deleteTableAsync(TableName tableName) throws IOException;
/**
* Deletes tables matching the passed in pattern and wait on completion. Warning: Use this method
* carefully, there is no prompting and the effect is immediate. Consider using {@link
* #listTableDescriptors(Pattern)}
* and {@link #deleteTable(org.apache.hadoop.hbase.TableName)}
*
* @param regex The regular expression to match table names against
* @return Table descriptors for tables that couldn't be deleted.
* The return htds are read-only
* @throws IOException
* @see #deleteTables(java.util.regex.Pattern)
* @see #deleteTable(org.apache.hadoop.hbase.TableName)
* @deprecated since 2.0 version and will be removed in 3.0 version
* This is just a trivial helper method without any magic.
* Consider using {@link #listTableDescriptors(Pattern)}
* and {@link #deleteTable(TableName)}
*/
@Deprecated
HTableDescriptor[] deleteTables(String regex) throws IOException;
/**
* Delete tables matching the passed in pattern and wait on completion. Warning: Use this method
* carefully, there is no prompting and the effect is immediate. Consider using {@link
* #listTableDescriptors(java.util.regex.Pattern)} and
* {@link #deleteTable(org.apache.hadoop.hbase.TableName)}
*
* @param pattern The pattern to match table names against
* @return Table descriptors for tables that couldn't be deleted
* The return htds are read-only
* @throws IOException
* @deprecated since 2.0 version and will be removed in 3.0 version
* This is just a trivial helper method without any magic.
* Consider using {@link #listTableDescriptors(java.util.regex.Pattern)}
* and {@link #deleteTable(TableName)}
*/
@Deprecated
HTableDescriptor[] deleteTables(Pattern pattern) throws IOException;
/**
* Truncate a table.
* Synchronous operation.
*
* @param tableName name of table to truncate
* @param preserveSplits true if the splits should be preserved
* @throws IOException if a remote or network exception occurs
*/
void truncateTable(TableName tableName, boolean preserveSplits)
throws IOException;
/**
* Truncate the table but does not block and wait for it to be completely enabled. You can use
* Future.get(long, TimeUnit) to wait on the operation to complete. It may throw
* ExecutionException if there was an error while executing the operation or TimeoutException in
* case the wait timeout was not long enough to allow the operation to complete.
* @param tableName name of table to delete
* @param preserveSplits true if the splits should be preserved
* @throws IOException if a remote or network exception occurs
* @return the result of the async truncate. You can use Future.get(long, TimeUnit) to wait on the
* operation to complete.
*/
Future truncateTableAsync(TableName tableName, boolean preserveSplits)
throws IOException;
/**
* Enable a table. May timeout. Use {@link #enableTableAsync(org.apache.hadoop.hbase.TableName)}
* and {@link #isTableEnabled(org.apache.hadoop.hbase.TableName)} instead. The table has to be in
* disabled state for it to be enabled.
*
* @param tableName name of the table
* @throws IOException if a remote or network exception occurs There could be couple types of
* IOException TableNotFoundException means the table doesn't exist. TableNotDisabledException
* means the table isn't in disabled state.
* @see #isTableEnabled(org.apache.hadoop.hbase.TableName)
* @see #disableTable(org.apache.hadoop.hbase.TableName)
* @see #enableTableAsync(org.apache.hadoop.hbase.TableName)
*/
void enableTable(TableName tableName) throws IOException;
/**
* Enable the table but does not block and wait for it to be completely enabled.
* You can use Future.get(long, TimeUnit) to wait on the operation to complete.
* It may throw ExecutionException if there was an error while executing the operation
* or TimeoutException in case the wait timeout was not long enough to allow the
* operation to complete.
*
* @param tableName name of table to delete
* @throws IOException if a remote or network exception occurs
* @return the result of the async enable. You can use Future.get(long, TimeUnit)
* to wait on the operation to complete.
*/
Future enableTableAsync(TableName tableName) throws IOException;
/**
* Enable tables matching the passed in pattern and wait on completion. Warning: Use this method
* carefully, there is no prompting and the effect is immediate. Consider using {@link
* #listTableDescriptors(Pattern)} and {@link #enableTable(org.apache.hadoop.hbase.TableName)}
*
* @param regex The regular expression to match table names against
* @throws IOException
* @return Table descriptors for tables that couldn't be enabled.
* The return HTDs are read-only.
* @see #enableTables(java.util.regex.Pattern)
* @see #enableTable(org.apache.hadoop.hbase.TableName)
* @deprecated since 2.0 version and will be removed in 3.0 version
* This is just a trivial helper method without any magic.
* Consider using {@link #listTableDescriptors(Pattern)}
* and {@link #enableTable(org.apache.hadoop.hbase.TableName)}
*/
@Deprecated
HTableDescriptor[] enableTables(String regex) throws IOException;
/**
* Enable tables matching the passed in pattern and wait on completion. Warning: Use this method
* carefully, there is no prompting and the effect is immediate. Consider using {@link
* #listTableDescriptors(java.util.regex.Pattern)} and
* {@link #enableTable(org.apache.hadoop.hbase.TableName)}
*
* @param pattern The pattern to match table names against
* @throws IOException
* @return Table descriptors for tables that couldn't be enabled.
* The return HTDs are read-only.
* @deprecated since 2.0 version and will be removed in 3.0 version
* This is just a trivial helper method without any magic.
* Consider using {@link #listTableDescriptors(java.util.regex.Pattern)}
* and {@link #enableTable(org.apache.hadoop.hbase.TableName)}
*/
@Deprecated
HTableDescriptor[] enableTables(Pattern pattern) throws IOException;
/**
* Disable the table but does not block and wait for it to be completely disabled.
* You can use Future.get(long, TimeUnit) to wait on the operation to complete.
* It may throw ExecutionException if there was an error while executing the operation
* or TimeoutException in case the wait timeout was not long enough to allow the
* operation to complete.
*
* @param tableName name of table to delete
* @throws IOException if a remote or network exception occurs
* @return the result of the async disable. You can use Future.get(long, TimeUnit)
* to wait on the operation to complete.
*/
Future disableTableAsync(TableName tableName) throws IOException;
/**
* Disable table and wait on completion. May timeout eventually. Use {@link
* #disableTableAsync(org.apache.hadoop.hbase.TableName)} and
* {@link #isTableDisabled(org.apache.hadoop.hbase.TableName)} instead. The table has to be in
* enabled state for it to be disabled.
*
* @param tableName
* @throws IOException There could be couple types of IOException TableNotFoundException means the
* table doesn't exist. TableNotEnabledException means the table isn't in enabled state.
*/
void disableTable(TableName tableName) throws IOException;
/**
* Disable tables matching the passed in pattern and wait on completion. Warning: Use this method
* carefully, there is no prompting and the effect is immediate. Consider using {@link
* #listTableDescriptors(Pattern)} and {@link #disableTable(org.apache.hadoop.hbase.TableName)}
*
* @param regex The regular expression to match table names against
* @return Table descriptors for tables that couldn't be disabled
* The return htds are read-only
* @throws IOException
* @see #disableTables(java.util.regex.Pattern)
* @see #disableTable(org.apache.hadoop.hbase.TableName)
* @deprecated since 2.0 version and will be removed in 3.0 version
* This is just a trivial helper method without any magic.
* Consider using {@link #listTableDescriptors(Pattern)}
* and {@link #disableTable(org.apache.hadoop.hbase.TableName)}
*/
@Deprecated
HTableDescriptor[] disableTables(String regex) throws IOException;
/**
* Disable tables matching the passed in pattern and wait on completion. Warning: Use this method
* carefully, there is no prompting and the effect is immediate. Consider using {@link
* #listTableDescriptors(java.util.regex.Pattern)} and
* {@link #disableTable(org.apache.hadoop.hbase.TableName)}
*
* @param pattern The pattern to match table names against
* @return Table descriptors for tables that couldn't be disabled
* The return htds are read-only
* @throws IOException
* @deprecated since 2.0 version and will be removed in 3.0 version
* This is just a trivial helper method without any magic.
* Consider using {@link #listTableDescriptors(java.util.regex.Pattern)}
* and {@link #disableTable(org.apache.hadoop.hbase.TableName)}
*/
@Deprecated
HTableDescriptor[] disableTables(Pattern pattern) throws IOException;
/**
* @param tableName name of table to check
* @return true if table is on-line
* @throws IOException if a remote or network exception occurs
*/
boolean isTableEnabled(TableName tableName) throws IOException;
/**
* @param tableName name of table to check
* @return true if table is off-line
* @throws IOException if a remote or network exception occurs
*/
boolean isTableDisabled(TableName tableName) throws IOException;
/**
* @param tableName name of table to check
* @return true if all regions of the table are available
* @throws IOException if a remote or network exception occurs
*/
boolean isTableAvailable(TableName tableName) throws IOException;
/**
* Use this api to check if the table has been created with the specified number of splitkeys
* which was used while creating the given table. Note : If this api is used after a table's
* region gets splitted, the api may return false.
*
* @param tableName name of table to check
* @param splitKeys keys to check if the table has been created with all split keys
* @throws IOException if a remote or network excpetion occurs
* @deprecated Since 2.0.0. Will be removed in 3.0.0. Use {@link #isTableAvailable(TableName)}
*/
@Deprecated
boolean isTableAvailable(TableName tableName, byte[][] splitKeys) throws IOException;
/**
* Get the status of an alter (a.k.a modify) command - indicates how
* many regions have received the updated schema Asynchronous operation.
*
* @param tableName TableName instance
* @return Pair indicating the number of regions updated Pair.getFirst() is the regions that are
* yet to be updated Pair.getSecond() is the total number of regions of the table
* @throws IOException if a remote or network exception occurs
* @deprecated Since 2.0.0. Will be removed in 3.0.0. No longer needed now you get a Future
* on an operation.
*/
@Deprecated
Pair getAlterStatus(TableName tableName) throws IOException;
/**
* Get the status of alter (a.k.a modify) command - indicates how many
* regions have received the updated schema Asynchronous operation.
*
* @param tableName name of the table to get the status of
* @return Pair indicating the number of regions updated Pair.getFirst() is the regions that are
* yet to be updated Pair.getSecond() is the total number of regions of the table
* @throws IOException if a remote or network exception occurs
* @deprecated Since 2.0.0. Will be removed in 3.0.0. No longer needed now you get a Future
* on an operation.
*/
@Deprecated
Pair getAlterStatus(byte[] tableName) throws IOException;
/**
* Add a column family to an existing table. Synchronous operation.
* Use {@link #addColumnFamilyAsync(TableName, ColumnFamilyDescriptor)} instead because it
* returns a {@link Future} from which you can learn whether success or failure.
*
* @param tableName name of the table to add column family to
* @param columnFamily column family descriptor of column family to be added
* @throws IOException if a remote or network exception occurs
* @deprecated As of release 2.0.0.
* This will be removed in HBase 3.0.0.
* Use {@link #addColumnFamily(TableName, ColumnFamilyDescriptor)}.
*/
@Deprecated
default void addColumn(TableName tableName, ColumnFamilyDescriptor columnFamily)
throws IOException {
addColumnFamily(tableName, columnFamily);
}
/**
* Add a column family to an existing table. Synchronous operation.
* Use {@link #addColumnFamilyAsync(TableName, ColumnFamilyDescriptor)} instead because it
* returns a {@link Future} from which you can learn whether success or failure.
*
* @param tableName name of the table to add column family to
* @param columnFamily column family descriptor of column family to be added
* @throws IOException if a remote or network exception occurs
*/
void addColumnFamily(TableName tableName, ColumnFamilyDescriptor columnFamily)
throws IOException;
/**
* Add a column family to an existing table. Asynchronous operation.
* You can use Future.get(long, TimeUnit) to wait on the operation to complete.
* It may throw ExecutionException if there was an error while executing the operation
* or TimeoutException in case the wait timeout was not long enough to allow the
* operation to complete.
*
* @param tableName name of the table to add column family to
* @param columnFamily column family descriptor of column family to be added
* @throws IOException if a remote or network exception occurs
* @return the result of the async add column family. You can use Future.get(long, TimeUnit) to
* wait on the operation to complete.
*/
Future addColumnFamilyAsync(TableName tableName, ColumnFamilyDescriptor columnFamily)
throws IOException;
/**
* Delete a column family from a table. Synchronous operation.
* Use {@link #deleteColumnFamily(TableName, byte[])} instead because it
* returns a {@link Future} from which you can learn whether success or failure.
*
* @param tableName name of table
* @param columnFamily name of column family to be deleted
* @throws IOException if a remote or network exception occurs
* @deprecated As of release 2.0.0.
* This will be removed in HBase 3.0.0.
* Use {@link #deleteColumnFamily(TableName, byte[])}}.
*/
@Deprecated
void deleteColumn(TableName tableName, byte[] columnFamily) throws IOException;
/**
* Delete a column family from a table. Synchronous operation.
* Use {@link #deleteColumnFamily(TableName, byte[])} instead because it
* returns a {@link Future} from which you can learn whether success or failure.
* @param tableName name of table
* @param columnFamily name of column family to be deleted
* @throws IOException if a remote or network exception occurs
*/
void deleteColumnFamily(TableName tableName, byte[] columnFamily) throws IOException;
/**
* Delete a column family from a table. Asynchronous operation.
* You can use Future.get(long, TimeUnit) to wait on the operation to complete.
* It may throw ExecutionException if there was an error while executing the operation
* or TimeoutException in case the wait timeout was not long enough to allow the
* operation to complete.
*
* @param tableName name of table
* @param columnFamily name of column family to be deleted
* @throws IOException if a remote or network exception occurs
* @return the result of the async delete column family. You can use Future.get(long, TimeUnit) to
* wait on the operation to complete.
*/
Future deleteColumnFamilyAsync(TableName tableName, byte[] columnFamily)
throws IOException;
/**
* Modify an existing column family on a table. Synchronous operation.
* Use {@link #modifyColumnFamilyAsync(TableName, ColumnFamilyDescriptor)} instead because it
* returns a {@link Future} from which you can learn whether success or failure.
* @param tableName name of table
* @param columnFamily new column family descriptor to use
* @throws IOException if a remote or network exception occurs
* @deprecated As of release 2.0.0.
* This will be removed in HBase 3.0.0.
* Use {@link #modifyColumnFamily(TableName, ColumnFamilyDescriptor)}.
*/
@Deprecated
default void modifyColumn(TableName tableName, ColumnFamilyDescriptor columnFamily)
throws IOException {
modifyColumnFamily(tableName, columnFamily);
}
/**
* Modify an existing column family on a table. Synchronous operation.
* Use {@link #modifyColumnFamilyAsync(TableName, ColumnFamilyDescriptor)} instead because it
* returns a {@link Future} from which you can learn whether success or failure.
* @param tableName name of table
* @param columnFamily new column family descriptor to use
* @throws IOException if a remote or network exception occurs
*/
void modifyColumnFamily(TableName tableName, ColumnFamilyDescriptor columnFamily)
throws IOException;
/**
* Modify an existing column family on a table. Asynchronous operation.
* You can use Future.get(long, TimeUnit) to wait on the operation to complete.
* It may throw ExecutionException if there was an error while executing the operation
* or TimeoutException in case the wait timeout was not long enough to allow the
* operation to complete.
*
* @param tableName name of table
* @param columnFamily new column family descriptor to use
* @throws IOException if a remote or network exception occurs
* @return the result of the async modify column family. You can use Future.get(long, TimeUnit) to
* wait on the operation to complete.
*/
Future modifyColumnFamilyAsync(TableName tableName, ColumnFamilyDescriptor columnFamily)
throws IOException;
/**
* Uses {@link #unassign(byte[], boolean)} to unassign the region. For expert-admins.
*
* @param regionname region name to close
* @param serverName Deprecated. Not used.
* @throws IOException if a remote or network exception occurs
* @deprecated As of release 2.0.0, this will be removed in HBase 3.0.0.
* Use {@link #unassign(byte[], boolean)}.
*/
@Deprecated
void closeRegion(String regionname, String serverName) throws IOException;
/**
* Uses {@link #unassign(byte[], boolean)} to unassign the region. For expert-admins.
*
* @param regionname region name to close
* @param serverName Deprecated. Not used.
* @throws IOException if a remote or network exception occurs
* @deprecated As of release 2.0.0, this will be removed in HBase 3.0.0.
* Use {@link #unassign(byte[], boolean)}.
*/
@Deprecated
void closeRegion(byte[] regionname, String serverName) throws IOException;
/**
* Uses {@link #unassign(byte[], boolean)} to unassign the region. For expert-admins.
*
* @param encodedRegionName The encoded region name; i.e. the hash that makes up the region name
* suffix: e.g. if regionname is
* TestTable,0094429456,1289497600452.527db22f95c8a9e0116f0cc13c680396.,
* then the encoded region name is: 527db22f95c8a9e0116f0cc13c680396.
* @param serverName Deprecated. Not used.
* @return Deprecated. Returns true always.
* @throws IOException if a remote or network exception occurs
* @deprecated As of release 2.0.0, this will be removed in HBase 3.0.0.
* Use {@link #unassign(byte[], boolean)}.
*/
@Deprecated
boolean closeRegionWithEncodedRegionName(String encodedRegionName, String serverName)
throws IOException;
/**
* Used {@link #unassign(byte[], boolean)} to unassign the region. For expert-admins.
*
* @param sn Deprecated. Not used.
* @deprecated As of release 2.0.0, this will be removed in HBase 3.0.0
* (HBASE-18231).
* Use {@link #unassign(byte[], boolean)}.
*/
@Deprecated
void closeRegion(final ServerName sn, final HRegionInfo hri) throws IOException;
/**
* Get all the online regions on a region server.
* @deprecated As of release 2.0.0, this will be removed in HBase 3.0.0
* (HBASE-17980).
* Use {@link #getRegions(ServerName sn)}.
*/
@Deprecated
List getOnlineRegions(ServerName sn) throws IOException;
/**
* Get all the online regions on a region server.
*
* @return List of {@link RegionInfo}
* @throws java.io.IOException
*/
List getRegions(ServerName serverName) throws IOException;
/**
* Flush a table. Synchronous operation.
*
* @param tableName table to flush
* @throws IOException if a remote or network exception occurs
*/
void flush(TableName tableName) throws IOException;
/**
* Flush an individual region. Synchronous operation.
*
* @param regionName region to flush
* @throws IOException if a remote or network exception occurs
*/
void flushRegion(byte[] regionName) throws IOException;
/**
* Flush all regions on the region server. Synchronous operation.
* @param serverName the region server name to flush
* @throws IOException if a remote or network exception occurs
*/
void flushRegionServer(ServerName serverName) throws IOException;
/**
* Compact a table. Asynchronous operation in that this method requests that a
* Compaction run and then it returns. It does not wait on the completion of Compaction
* (it can take a while).
*
* @param tableName table to compact
* @throws IOException if a remote or network exception occurs
*/
void compact(TableName tableName) throws IOException;
/**
* Compact an individual region. Asynchronous operation in that this method requests that a
* Compaction run and then it returns. It does not wait on the completion of Compaction
* (it can take a while).
*
* @param regionName region to compact
* @throws IOException if a remote or network exception occurs
*/
void compactRegion(byte[] regionName) throws IOException;
/**
* Compact a column family within a table. Asynchronous operation in that this method requests
* that a Compaction run and then it returns. It does not wait on the completion of Compaction
* (it can take a while).
*
* @param tableName table to compact
* @param columnFamily column family within a table
* @throws IOException if a remote or network exception occurs
*/
void compact(TableName tableName, byte[] columnFamily)
throws IOException;
/**
* Compact a column family within a region. Asynchronous operation in that this method requests
* that a Compaction run and then it returns. It does not wait on the completion of Compaction
* (it can take a while).
*
* @param regionName region to compact
* @param columnFamily column family within a region
* @throws IOException if a remote or network exception occurs
*/
void compactRegion(byte[] regionName, byte[] columnFamily)
throws IOException;
/**
* Compact a table. Asynchronous operation in that this method requests that a
* Compaction run and then it returns. It does not wait on the completion of Compaction
* (it can take a while).
*
* @param tableName table to compact
* @param compactType {@link org.apache.hadoop.hbase.client.CompactType}
* @throws IOException if a remote or network exception occurs
* @throws InterruptedException
*/
void compact(TableName tableName, CompactType compactType)
throws IOException, InterruptedException;
/**
* Compact a column family within a table. Asynchronous operation in that this method
* requests that a Compaction run and then it returns. It does not wait on the
* completion of Compaction (it can take a while).
*
* @param tableName table to compact
* @param columnFamily column family within a table
* @param compactType {@link org.apache.hadoop.hbase.client.CompactType}
* @throws IOException if not a mob column family or if a remote or network exception occurs
* @throws InterruptedException
*/
void compact(TableName tableName, byte[] columnFamily, CompactType compactType)
throws IOException, InterruptedException;
/**
* Major compact a table. Asynchronous operation in that this method requests
* that a Compaction run and then it returns. It does not wait on the completion of Compaction
* (it can take a while).
*
* @param tableName table to major compact
* @throws IOException if a remote or network exception occurs
*/
void majorCompact(TableName tableName) throws IOException;
/**
* Major compact a table or an individual region. Asynchronous operation in that this method requests
* that a Compaction run and then it returns. It does not wait on the completion of Compaction
* (it can take a while).
*
* @param regionName region to major compact
* @throws IOException if a remote or network exception occurs
*/
void majorCompactRegion(byte[] regionName) throws IOException;
/**
* Major compact a column family within a table. Asynchronous operation in that this method requests
* that a Compaction run and then it returns. It does not wait on the completion of Compaction
* (it can take a while).
*
* @param tableName table to major compact
* @param columnFamily column family within a table
* @throws IOException if a remote or network exception occurs
*/
void majorCompact(TableName tableName, byte[] columnFamily)
throws IOException;
/**
* Major compact a column family within region. Asynchronous operation in that this method requests
* that a Compaction run and then it returns. It does not wait on the completion of Compaction
* (it can take a while).
*
* @param regionName egion to major compact
* @param columnFamily column family within a region
* @throws IOException if a remote or network exception occurs
*/
void majorCompactRegion(byte[] regionName, byte[] columnFamily)
throws IOException;
/**
* Major compact a table. Asynchronous operation in that this method requests that a
* Compaction run and then it returns. It does not wait on the completion of Compaction
* (it can take a while).
*
* @param tableName table to compact
* @param compactType {@link org.apache.hadoop.hbase.client.CompactType}
* @throws IOException if a remote or network exception occurs
* @throws InterruptedException
*/
void majorCompact(TableName tableName, CompactType compactType)
throws IOException, InterruptedException;
/**
* Major compact a column family within a table. Asynchronous operation in that this method requests that a
* Compaction run and then it returns. It does not wait on the completion of Compaction
* (it can take a while).
*
* @param tableName table to compact
* @param columnFamily column family within a table
* @param compactType {@link org.apache.hadoop.hbase.client.CompactType}
* @throws IOException if not a mob column family or if a remote or network exception occurs
* @throws InterruptedException
*/
void majorCompact(TableName tableName, byte[] columnFamily, CompactType compactType)
throws IOException, InterruptedException;
/**
* Compact all regions on the region server. Asynchronous operation in that this method requests
* that a Compaction run and then it returns. It does not wait on the completion of Compaction (it
* can take a while).
* @param sn the region server name
* @param major if it's major compaction
* @throws IOException if a remote or network exception occurs
* @throws InterruptedException
* @deprecated As of release 2.0.0, this will be removed in HBase 3.0.0. Use
* {@link #compactRegionServer(ServerName)} or
* {@link #majorCompactRegionServer(ServerName)}.
*/
@Deprecated
default void compactRegionServer(ServerName sn, boolean major) throws IOException,
InterruptedException {
if (major) {
majorCompactRegionServer(sn);
} else {
compactRegionServer(sn);
}
}
/**
* Compact all regions on the region server. Asynchronous operation in that this method requests
* that a Compaction run and then it returns. It does not wait on the completion of Compaction (it
* can take a while).
* @param serverName the region server name
* @throws IOException if a remote or network exception occurs
*/
void compactRegionServer(ServerName serverName) throws IOException;
/**
* Major compact all regions on the region server. Asynchronous operation in that this method
* requests that a Compaction run and then it returns. It does not wait on the completion of
* Compaction (it can take a while).
* @param serverName the region server name
* @throws IOException if a remote or network exception occurs
*/
void majorCompactRegionServer(ServerName serverName) throws IOException;
/**
* Move the region r to dest.
*
* @param encodedRegionName The encoded region name; i.e. the hash that makes up the region name
* suffix: e.g. if regionname is
* TestTable,0094429456,1289497600452.527db22f95c8a9e0116f0cc13c680396.,
* then the encoded region name is: 527db22f95c8a9e0116f0cc13c680396.
* @param destServerName The servername of the destination regionserver. If passed the empty byte
* array we'll assign to a random server. A server name is made of host, port and startcode.
* Here is an example: host187.example.com,60020,1289493121758
* @throws IOException if we can't find a region named
* encodedRegionName
*/
void move(byte[] encodedRegionName, byte[] destServerName) throws IOException;
/**
* Assign a Region.
* @param regionName Region name to assign.
*/
void assign(byte[] regionName) throws IOException;
/**
* Unassign a region from current hosting regionserver. Region will then be assigned to a
* regionserver chosen at random. Region could be reassigned back to the same server. Use {@link
* #move(byte[], byte[])} if you want to control the region movement.
*
* @param regionName Region to unassign. Will clear any existing RegionPlan if one found.
* @param force If true, force unassign (Will remove region from regions-in-transition too if
* present. If results in double assignment use hbck -fix to resolve. To be used by experts).
*/
void unassign(byte[] regionName, boolean force)
throws IOException;
/**
* Offline specified region from master's in-memory state. It will not attempt to reassign the
* region as in unassign. This API can be used when a region not served by any region server and
* still online as per Master's in memory state. If this API is incorrectly used on active region
* then master will loose track of that region. This is a special method that should be used by
* experts or hbck.
*
* @param regionName Region to offline.
* @throws IOException
*/
void offline(byte[] regionName) throws IOException;
/**
* Turn the load balancer on or off.
*
* @param synchronous If true, it waits until current balance() call, if
* outstanding, to return.
* @return Previous balancer value
* @deprecated Since 2.0.0. Will be removed in 3.0.0.
* Use {@link #balancerSwitch(boolean, boolean)} instead.
*/
@Deprecated
default boolean setBalancerRunning(boolean on, boolean synchronous) throws IOException {
return balancerSwitch(on, synchronous);
}
/**
* Turn the load balancer on or off.
* @param onOrOff Set to true to enable, false to disable.
* @param synchronous If true, it waits until current balance() call, if
* outstanding, to return.
* @return Previous balancer value
*/
boolean balancerSwitch(boolean onOrOff, boolean synchronous)
throws IOException;
/**
* Invoke the balancer. Will run the balancer and if regions to move, it will go ahead and do the
* reassignments. Can NOT run for various reasons. Check logs.
*
* @return true if balancer ran, false otherwise.
* @deprecated Since 2.0.0. Will be removed in 3.0.0.
* Use {@link #balance()} instead.
*/
@Deprecated
default boolean balancer() throws IOException {
return balance();
}
/**
* Invoke the balancer. Will run the balancer and if regions to move, it will go ahead and do the
* reassignments. Can NOT run for various reasons. Check logs.
*
* @return true if balancer ran, false otherwise.
*/
boolean balance() throws IOException;
/**
* Invoke the balancer. Will run the balancer and if regions to move, it will
* go ahead and do the reassignments. If there is region in transition, force parameter of true
* would still run balancer. Can *not* run for other reasons. Check
* logs.
* @param force whether we should force balance even if there is region in transition
* @return true if balancer ran, false otherwise.
* @deprecated Since 2.0.0. Will be removed in 3.0.0.
* Use {@link #balance(boolean)} instead.
*/
@Deprecated
default boolean balancer(boolean force) throws IOException {
return balance(force);
}
/**
* Invoke the balancer. Will run the balancer and if regions to move, it will
* go ahead and do the reassignments. If there is region in transition, force parameter of true
* would still run balancer. Can *not* run for other reasons. Check
* logs.
* @param force whether we should force balance even if there is region in transition
* @return true if balancer ran, false otherwise.
*/
boolean balance(boolean force) throws IOException;
/**
* Query the current state of the balancer.
*
* @return true if the balancer is enabled, false otherwise.
*/
boolean isBalancerEnabled() throws IOException;
/**
* Clear all the blocks corresponding to this table from BlockCache. For expert-admins.
* Calling this API will drop all the cached blocks specific to a table from BlockCache.
* This can significantly impact the query performance as the subsequent queries will
* have to retrieve the blocks from underlying filesystem.
*
* @param tableName table to clear block cache
* @return CacheEvictionStats related to the eviction
* @throws IOException if a remote or network exception occurs
*/
CacheEvictionStats clearBlockCache(final TableName tableName) throws IOException;
/**
* Invoke region normalizer. Can NOT run for various reasons. Check logs.
*
* @return true if region normalizer ran, false otherwise.
*/
boolean normalize() throws IOException;
/**
* Query the current state of the region normalizer.
*
* @return true if region normalizer is enabled, false otherwise.
*/
boolean isNormalizerEnabled() throws IOException;
/**
* Turn region normalizer on or off.
*
* @return Previous normalizer value
* @deprecated Since 2.0.0. Will be removed in 3.0.0. Use {@link #normalizerSwitch(boolean)}}
* instead.
*/
@Deprecated
default boolean setNormalizerRunning(boolean on) throws IOException {
return normalizerSwitch(on);
}
/**
* Turn region normalizer on or off.
*
* @return Previous normalizer value
*/
boolean normalizerSwitch (boolean on) throws IOException;
/**
* Enable/Disable the catalog janitor.
*
* @param enable if true enables the catalog janitor
* @return the previous state
* @deprecated Since 2.0.0. Will be removed in 3.0.0. Use {@link #catalogJanitorSwitch(boolean)}}
* instead.
*/
@Deprecated
default boolean enableCatalogJanitor(boolean enable) throws IOException {
return catalogJanitorSwitch(enable);
}
/**
* Enable/Disable the catalog janitor/
*
* @param onOrOff if true enables the catalog janitor
* @return the previous state
*/
boolean catalogJanitorSwitch(boolean onOrOff) throws IOException;
/**
* Ask for a scan of the catalog table.
*
* @return the number of entries cleaned
* @deprecated Since 2.0.0. Will be removed in 3.0.0. Use {@link #runCatalogJanitor()}}
* instead.
*/
@Deprecated
default int runCatalogScan() throws IOException {
return runCatalogJanitor();
}
/**
* Ask for a scan of the catalog table.
*
* @return the number of entries cleaned
*/
int runCatalogJanitor() throws IOException;
/**
* Query on the catalog janitor state (Enabled/Disabled?).
*
*/
boolean isCatalogJanitorEnabled() throws IOException;
/**
* Enable/Disable the cleaner chore.
*
* @param on if true enables the cleaner chore
* @return the previous state
* @throws IOException
* @deprecated Since 2.0.0. Will be removed in 3.0.0. Use {@link #cleanerChoreSwitch(boolean)}}
* instead.
*/
@Deprecated
default boolean setCleanerChoreRunning(boolean on) throws IOException {
return cleanerChoreSwitch(on);
}
/**
* Enable/Disable the cleaner chore.
*
* @param onOrOff if true enables the cleaner chore
* @return the previous state
* @throws IOException
*/
boolean cleanerChoreSwitch(boolean onOrOff) throws IOException;
/**
* Ask for cleaner chore to run.
*
* @return true if cleaner chore ran, false otherwise
* @throws IOException
*/
boolean runCleanerChore() throws IOException;
/**
* Query on the cleaner chore state (Enabled/Disabled?).
*
* @throws IOException
*/
boolean isCleanerChoreEnabled() throws IOException;
/**
* Merge two regions. Asynchronous operation.
*
* @param nameOfRegionA encoded or full name of region a
* @param nameOfRegionB encoded or full name of region b
* @param forcible true if do a compulsory merge, otherwise we will only merge two
* adjacent regions
* @throws IOException
* @deprecated Since 2.0. Will be removed in 3.0. Use
* {@link #mergeRegionsAsync(byte[], byte[], boolean)} instead.
*/
@Deprecated
void mergeRegions(byte[] nameOfRegionA, byte[] nameOfRegionB,
boolean forcible) throws IOException;
/**
* Merge two regions. Asynchronous operation.
*
* @param nameOfRegionA encoded or full name of region a
* @param nameOfRegionB encoded or full name of region b
* @param forcible true if do a compulsory merge, otherwise we will only merge
* two adjacent regions
* @throws IOException
*/
Future mergeRegionsAsync(
byte[] nameOfRegionA,
byte[] nameOfRegionB,
boolean forcible) throws IOException;
/**
* Merge regions. Asynchronous operation.
*
* @param nameofRegionsToMerge encoded or full name of daughter regions
* @param forcible true if do a compulsory merge, otherwise we will only merge
* adjacent regions
* @throws IOException
*/
Future mergeRegionsAsync(
byte[][] nameofRegionsToMerge,
boolean forcible) throws IOException;
/**
+ Split a table. The method will execute split action for each region in table.
+ Asynchronous operation.
* @param tableName table to split
* @throws IOException if a remote or network exception occurs
*/
void split(TableName tableName) throws IOException;
/**
* Split an individual region. Asynchronous operation.
*
* @param regionName region to split
* @throws IOException if a remote or network exception occurs
* @deprecated As of release 2.0.0, this will be removed in HBase 3.0.0.
* Use {@link #splitRegionAsync(byte[], byte[])}.
*/
@Deprecated
void splitRegion(byte[] regionName) throws IOException;
/**
* Split a table. Asynchronous operation.
*
* @param tableName table to split
* @param splitPoint the explicit position to split on
* @throws IOException if a remote or network exception occurs
*/
void split(TableName tableName, byte[] splitPoint)
throws IOException;
/**
* Split an individual region. Asynchronous operation.
*
* @param regionName region to split
* @param splitPoint the explicit position to split on
* @throws IOException if a remote or network exception occurs
* @deprecated As of release 2.0.0, this will be removed in HBase 3.0.0.
* Use {@link #splitRegionAsync(byte[], byte[])}.
*/
@Deprecated
void splitRegion(byte[] regionName, byte[] splitPoint)
throws IOException;
/**
* Split an individual region. Asynchronous operation.
* @param regionName region to split
* @param splitPoint the explicit position to split on
* @throws IOException if a remote or network exception occurs
*/
Future splitRegionAsync(byte[] regionName, byte[] splitPoint)
throws IOException;
/**
* Modify an existing table, more IRB friendly version.
*
* @param tableName name of table.
* @param td modified description of the table
* @throws IOException if a remote or network exception occurs
* @deprecated since 2.0 version and will be removed in 3.0 version.
* use {@link #modifyTable(TableDescriptor)}
*/
@Deprecated
void modifyTable(TableName tableName, TableDescriptor td)
throws IOException;
/**
* Modify an existing table, more IRB friendly version.
* @param td modified description of the table
* @throws IOException if a remote or network exception occurs
*/
void modifyTable(TableDescriptor td) throws IOException;
/**
* Modify an existing table, more IRB friendly version. Asynchronous operation. This means that
* it may be a while before your schema change is updated across all of the table.
* You can use Future.get(long, TimeUnit) to wait on the operation to complete.
* It may throw ExecutionException if there was an error while executing the operation
* or TimeoutException in case the wait timeout was not long enough to allow the
* operation to complete.
*
* @param tableName name of table.
* @param td modified description of the table
* @throws IOException if a remote or network exception occurs
* @return the result of the async modify. You can use Future.get(long, TimeUnit) to wait on the
* operation to complete
* @deprecated since 2.0 version and will be removed in 3.0 version.
* use {@link #modifyTableAsync(TableDescriptor)}
*/
@Deprecated
Future modifyTableAsync(TableName tableName, TableDescriptor td)
throws IOException;
/**
* Modify an existing table, more IRB (ruby) friendly version. Asynchronous operation. This means that
* it may be a while before your schema change is updated across all of the table.
* You can use Future.get(long, TimeUnit) to wait on the operation to complete.
* It may throw ExecutionException if there was an error while executing the operation
* or TimeoutException in case the wait timeout was not long enough to allow the
* operation to complete.
*
* @param td description of the table
* @throws IOException if a remote or network exception occurs
* @return the result of the async modify. You can use Future.get(long, TimeUnit) to wait on the
* operation to complete
*/
Future modifyTableAsync(TableDescriptor td)
throws IOException;
/**
*
* Shuts down the HBase cluster.
*
*
* Notice that, a success shutdown call may ends with an error since the remote server has already
* been shutdown.
*
* @throws IOException if a remote or network exception occurs
*/
void shutdown() throws IOException;
/**
*
* Shuts down the current HBase master only. Does not shutdown the cluster.
*
*
* Notice that, a success stopMaster call may ends with an error since the remote server has
* already been shutdown.
*
* @throws IOException if a remote or network exception occurs
* @see #shutdown()
*/
void stopMaster() throws IOException;
/**
* Check whether Master is in maintenance mode.
*
* @throws IOException if a remote or network exception occurs
*/
boolean isMasterInMaintenanceMode() throws IOException;
/**
* Stop the designated regionserver.
*
* @param hostnamePort Hostname and port delimited by a : as in
* example.org:1234
* @throws IOException if a remote or network exception occurs
*/
void stopRegionServer(String hostnamePort) throws IOException;
/**
* Get whole cluster status, containing status about:
*
* hbase version
* cluster id
* primary/backup master(s)
* master's coprocessors
* live/dead regionservers
* balancer
* regions in transition
*
* @return cluster status
* @throws IOException if a remote or network exception occurs
* @deprecated since 2.0 version and will be removed in 3.0 version.
* use {@link #getClusterMetrics()}
*/
@Deprecated
default ClusterStatus getClusterStatus() throws IOException {
return new ClusterStatus(getClusterMetrics());
}
/**
* Get whole cluster metrics, containing status about:
*
* hbase version
* cluster id
* primary/backup master(s)
* master's coprocessors
* live/dead regionservers
* balancer
* regions in transition
*
* @return cluster metrics
* @throws IOException if a remote or network exception occurs
*/
default ClusterMetrics getClusterMetrics() throws IOException {
return getClusterMetrics(EnumSet.allOf(ClusterMetrics.Option.class));
}
/**
* Get cluster status with a set of {@link Option} to get desired status.
* @return cluster status
* @throws IOException if a remote or network exception occurs
*/
ClusterMetrics getClusterMetrics(EnumSet