org.apache.hadoop.hbase.master.handler

Class TruncateTableHandler

java.lang.Object

org.apache.hadoop.hbase.executor.EventHandler

org.apache.hadoop.hbase.master.handler.TableEventHandler

org.apache.hadoop.hbase.master.handler.DeleteTableHandler

org.apache.hadoop.hbase.master.handler.TruncateTableHandler

All Implemented Interfaces:

Comparable<Runnable>, Runnable

@InterfaceAudience.Private
public class TruncateTableHandler
extends DeleteTableHandler

Truncate the table by removing META and the HDFS files and recreating it. If the 'preserveSplits' option is set to true, the region splits are preserved on recreate. If the operation fails in the middle it may require hbck to fix the system state.

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.hadoop.hbase.executor.EventHandler

EventHandler.EventHandlerListener

Field Summary

Fields inherited from class org.apache.hadoop.hbase.master.handler.DeleteTableHandler

hTableDescriptor

Fields inherited from class org.apache.hadoop.hbase.master.handler.TableEventHandler

masterServices, tableLock, tableName

Fields inherited from class org.apache.hadoop.hbase.executor.EventHandler

eventType, seqids, server, waitingTimeForEvents

Constructor Summary

Constructors

Constructor and Description
TruncateTableHandler(TableName tableName, Server server, MasterServices masterServices, boolean preserveSplits)

Method Summary

Modifier and Type	Method and Description
protected void	handleTableOperation(List<HRegionInfo> regions)

Methods inherited from class org.apache.hadoop.hbase.master.handler.DeleteTableHandler

prepareWithTableLock, releaseTableLock, removeTableData, toString, waitRegionInTransition

Methods inherited from class org.apache.hadoop.hbase.master.handler.TableEventHandler

completed, getTableDescriptor, prepare, process, reOpenAllRegions

Methods inherited from class org.apache.hadoop.hbase.executor.EventHandler

compareTo, getEventType, getInformativeName, getListener, getPriority, getSeqid, handleException, run, setListener

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

TruncateTableHandler

public TruncateTableHandler(TableName tableName,
                            Server server,
                            MasterServices masterServices,
                            boolean preserveSplits)

Method Detail

handleTableOperation

protected void handleTableOperation(List<HRegionInfo> regions)
                             throws IOException,
                                    CoordinatedStateException

Overrides:

handleTableOperation in class DeleteTableHandler

Throws:

IOException

CoordinatedStateException