org.apache.hadoop.hbase.master.handler

Class ServerShutdownHandler

java.lang.Object

org.apache.hadoop.hbase.executor.EventHandler

org.apache.hadoop.hbase.master.handler.ServerShutdownHandler

All Implemented Interfaces:

Comparable<Runnable>, Runnable

Direct Known Subclasses:

MetaServerShutdownHandler

@InterfaceAudience.Private
public class ServerShutdownHandler
extends EventHandler

Process server shutdown. Server-to-handle must be already in the deadservers lists. See ServerManager.expireServer(ServerName)

Nested Class Summary

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

EventHandler.EventHandlerListener

Field Summary

Fields

Modifier and Type	Field and Description
protected DeadServer	deadServers
protected int	regionAssignmentWaitTimeout
protected ServerName	serverName
protected MasterServices	services
protected boolean	shouldSplitWal

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

eventType, seqids, server, waitingTimeForEvents

Constructor Summary

Constructors

Constructor and Description
ServerShutdownHandler(Server server, MasterServices services, DeadServer deadServers, ServerName serverName, boolean shouldSplitWal)

Method Summary

Modifier and Type	Method and Description
String	getInformativeName() Event implementations should override thie class to provide an informative name about what event they are handling.
void	process() This method is the main processing loop to be implemented by the various subclasses.
static boolean	processDeadRegion(HRegionInfo hri, AssignmentManager assignmentManager) Process a dead region from a dead RS.
String	toString()

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

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

Methods inherited from class java.lang.Object

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

Field Detail

serverName

protected final ServerName serverName

services

protected final MasterServices services

deadServers

protected final DeadServer deadServers

shouldSplitWal

protected final boolean shouldSplitWal

regionAssignmentWaitTimeout

protected final int regionAssignmentWaitTimeout

Constructor Detail

ServerShutdownHandler

public ServerShutdownHandler(Server server,
                             MasterServices services,
                             DeadServer deadServers,
                             ServerName serverName,
                             boolean shouldSplitWal)

Method Detail

getInformativeName

public String getInformativeName()

Description copied from class: EventHandler

Event implementations should override thie class to provide an informative name about what event they are handling. For example, event-specific information such as which region or server is being processed should be included if possible.

Overrides:

getInformativeName in class EventHandler

toString

public String toString()

Overrides:

toString in class EventHandler

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

processDeadRegion

public static boolean processDeadRegion(HRegionInfo hri,
                                        AssignmentManager assignmentManager)
                                 throws IOException

Process a dead region from a dead RS. Checks if the region is disabled or disabling or if the region has a partially completed split.

Parameters:

hri -

assignmentManager -

Returns:

Returns true if specified region should be assigned, false if not.

Throws:

IOException