org.apache.hadoop.hbase.regionserver

类 SplitWALCallable

java.lang.Object

org.apache.hadoop.hbase.regionserver.SplitWALCallable

所有已实现的接口:

Callable<Void>, RSProcedureCallable

@InterfaceAudience.Private
public class SplitWALCallable
extends Object
implements RSProcedureCallable

This callable is used to do the real split WAL task. It is called by SplitWALRemoteProcedure from master and executed by executor service which is in charge of executing the events of EventType.RS_LOG_REPLAY When execute this callable, it will call SplitLogWorker.splitLog() to split the WAL. If the return value is SplitLogWorker.TaskExecutor.Status.DONE, it means the task is successful and it will return null to end the call. Otherwise it will throw an exception and let SplitWALRemoteProcedure to handle this problem. This class is to replace the zk-based WAL splitting related code, SplitLogWorker, SplitLogWorkerCoordination and ZkSplitLogWorkerCoordination can be removed after we switch to procedure-based WAL splitting.

构造器概要

构造器

构造器和说明
SplitWALCallable()

方法概要

限定符和类型	方法和说明
Void	call()
EventType	getEventType() Event type used to select thread pool.
String	getWalPath()
void	init(byte[] parameter, HRegionServer rs) Initialize the callable

从类继承的方法 java.lang.Object

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

构造器详细资料

SplitWALCallable

public SplitWALCallable()

方法详细资料

init

public void init(byte[] parameter,
                 HRegionServer rs)

从接口复制的说明: RSProcedureCallable

Initialize the callable

指定者:

init 在接口中 RSProcedureCallable

参数:

parameter - the parameter passed from master.

rs - the regionserver instance

getEventType

public EventType getEventType()

从接口复制的说明: RSProcedureCallable

Event type used to select thread pool.

指定者:

getEventType 在接口中 RSProcedureCallable

call

public Void call()
          throws Exception

指定者:

call 在接口中 Callable<Void>

抛出:

Exception

getWalPath

public String getWalPath()