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

java.lang.Object
  org.apache.hadoop.hbase.executor.EventHandler
      org.apache.hadoop.hbase.master.handler.TableEventHandler

All Implemented Interfaces:

java.lang.Comparable<java.lang.Runnable>, java.lang.Runnable

Direct Known Subclasses:

DeleteTableHandler, ModifyTableHandler, TableAddFamilyHandler, TableDeleteFamilyHandler, TableModifyFamilyHandler

public abstract class TableEventHandler
extends EventHandler

Base class for performing operations against tables. Checks on whether the process can go forward are done in constructor rather than later on in process(). The idea is to fail fast rather than later down in an async invocation of process() (which currently has no means of reporting back issues once started).

Nested Class Summary

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

EventHandler.EventHandlerListener, EventHandler.EventType

Field Summary

protected MasterServices	masterServices
protected byte[]	tableName
protected java.lang.String	tableNameStr

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

eventType, seqids, server

Constructor Summary

TableEventHandler(EventHandler.EventType eventType, byte[] tableName, Server server, MasterServices masterServices)

Method Summary

protected abstract void	handleTableOperation(java.util.List<HRegionInfo> regions)
void	process() This method is the main processing loop to be implemented by the various subclasses.

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

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

Methods inherited from class java.lang.Object

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

Field Detail

masterServices

protected final MasterServices masterServices

tableName

protected final byte[] tableName

tableNameStr

protected final java.lang.String tableNameStr

Constructor Detail

TableEventHandler

public TableEventHandler(EventHandler.EventType eventType,
                         byte[] tableName,
                         Server server,
                         MasterServices masterServices)
                  throws java.io.IOException

Throws:

java.io.IOException

Method Detail

process

public void process()

Description copied from class: EventHandler

This method is the main processing loop to be implemented by the various subclasses.

Specified by:

process in class EventHandler

handleTableOperation

protected abstract void handleTableOperation(java.util.List<HRegionInfo> regions)
                                      throws java.io.IOException,
                                             org.apache.zookeeper.KeeperException

Throws:

java.io.IOException

org.apache.zookeeper.KeeperException