org.apache.hadoop.hbase.regionserver.handler

Class AssignRegionHandler

java.lang.Object

org.apache.hadoop.hbase.executor.EventHandler

org.apache.hadoop.hbase.regionserver.handler.AssignRegionHandler

All Implemented Interfaces:

Comparable<Runnable>, Runnable

@InterfaceAudience.Private
public class AssignRegionHandler
extends EventHandler

Handles opening of a region on a region server.

Just done the same thing with the old OpenRegionHandler, with some modifications on fencing and retrying. But we need to keep the OpenRegionHandler as is to keep compatible with the zk less assignment for 1.x, otherwise it is not possible to do rolling upgrade.

Field Summary

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

eventType, seqids, server, waitingTimeForEvents

Constructor Summary

Constructors

Constructor and Description
AssignRegionHandler(HRegionServer server, RegionInfo regionInfo, long openProcId, TableDescriptor tableDesc, long masterSystemTime, EventType eventType)

Method Summary

Modifier and Type	Method and Description
static AssignRegionHandler	create(HRegionServer server, RegionInfo regionInfo, long openProcId, TableDescriptor tableDesc, long masterSystemTime)
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.

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

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

Methods inherited from class java.lang.Object

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

Constructor Detail

AssignRegionHandler

public AssignRegionHandler(HRegionServer server,
                           RegionInfo regionInfo,
                           long openProcId,
                           @Nullable
                           TableDescriptor tableDesc,
                           long masterSystemTime,
                           EventType eventType)

Method Detail

process

public void process()
             throws IOException

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

Throws:

IOException

handleException

protected void handleException(Throwable t)

Description copied from class: EventHandler

Event exception handler, may be overridden

Overrides:

handleException in class EventHandler

Parameters:

t - Throwable object

create

public static AssignRegionHandler create(HRegionServer server,
                                         RegionInfo regionInfo,
                                         long openProcId,
                                         TableDescriptor tableDesc,
                                         long masterSystemTime)