org.apache.hadoop.hbase.regionserver.handler

类 RegionReplicaFlushHandler

java.lang.Object

org.apache.hadoop.hbase.executor.EventHandler

org.apache.hadoop.hbase.regionserver.handler.RegionReplicaFlushHandler

所有已实现的接口:

Comparable<Runnable>, Runnable

@InterfaceAudience.Private
public class RegionReplicaFlushHandler
extends EventHandler

HBASE-11580: With the async wal approach (HBASE-11568), the edits are not persisted to wal in secondary region replicas. This means that a secondary region replica can serve some edits from it's memstore that that is still not flushed from primary. We do not want to allow secondary region's seqId to go back in time, when this secondary region is opened elsewhere after a crash or region move. We will trigger a flush cache in the primary region replica and wait for observing a complete flush cycle before marking the region readsEnabled. This handler does the flushing of the primary region replica and ensures that regular region opening is not blocked while the secondary replica is blocked on flush.

字段概要

从类继承的字段 org.apache.hadoop.hbase.executor.EventHandler

eventType, seqids, server, waitingTimeForEvents

构造器概要

构造器

构造器和说明
RegionReplicaFlushHandler(Server server, ClusterConnection connection, RpcRetryingCallerFactory rpcRetryingCallerFactory, RpcControllerFactory rpcControllerFactory, int operationTimeout, HRegion region)

方法概要

限定符和类型	方法和说明
protected void	handleException(Throwable t) Event exception handler, may be overridden
void	process() This method is the main processing loop to be implemented by the various subclasses.

从类继承的方法 org.apache.hadoop.hbase.executor.EventHandler

compareTo, getEventType, getInformativeName, getPriority, getSeqid, prepare, run, toString

从类继承的方法 java.lang.Object

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

构造器详细资料

RegionReplicaFlushHandler

public RegionReplicaFlushHandler(Server server,
                                 ClusterConnection connection,
                                 RpcRetryingCallerFactory rpcRetryingCallerFactory,
                                 RpcControllerFactory rpcControllerFactory,
                                 int operationTimeout,
                                 HRegion region)

方法详细资料

process

public void process()
             throws IOException

从类复制的说明: EventHandler

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

指定者:

process 在类中 EventHandler

抛出:

IOException

handleException

protected void handleException(Throwable t)

从类复制的说明: EventHandler

Event exception handler, may be overridden

覆盖:

handleException 在类中 EventHandler

参数:

t - Throwable object