Package org.apache.hadoop.hbase.regionserver.wal

Class WALEventTrackerListener

java.lang.Object

org.apache.hadoop.hbase.regionserver.wal.WALEventTrackerListener

All Implemented Interfaces:

WALActionsListener

@Private
public class WALEventTrackerListener
extends Object
implements WALActionsListener

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static enum	WALEventTrackerListener.WalState

Nested classes/interfaces inherited from interface org.apache.hadoop.hbase.regionserver.wal.WALActionsListener

WALActionsListener.RollRequestReason

Field Summary

Fields

Modifier and Type	Field	Description
private final org.apache.hadoop.conf.Configuration	conf
private final NamedQueueRecorder	namedQueueRecorder
private final String	serverName

Constructor Summary

Constructors

Constructor	Description
WALEventTrackerListener(org.apache.hadoop.conf.Configuration conf, NamedQueueRecorder namedQueueRecorder, ServerName serverName)

Method Summary

Modifier and Type	Method	Description
private WALEventTrackerPayload	getPayload(String path, String state, long walLength)
void	postLogRoll(org.apache.hadoop.fs.Path oldPath, org.apache.hadoop.fs.Path newPath)	The WAL has been rolled.
void	preLogRoll(org.apache.hadoop.fs.Path oldPath, org.apache.hadoop.fs.Path newPath)	The WAL is going to be rolled.

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.hadoop.hbase.regionserver.wal.WALActionsListener

logCloseRequested, logRollRequested, postAppend, postLogArchive, postSync, preLogArchive, visitLogEntryBeforeWrite

Field Details

conf

private final org.apache.hadoop.conf.Configuration conf

namedQueueRecorder

private final NamedQueueRecorder namedQueueRecorder

serverName

private final String serverName

Constructor Details

WALEventTrackerListener

public WALEventTrackerListener(org.apache.hadoop.conf.Configuration conf,
 NamedQueueRecorder namedQueueRecorder,
 ServerName serverName)

Method Details

preLogRoll

public void preLogRoll(org.apache.hadoop.fs.Path oldPath,
 org.apache.hadoop.fs.Path newPath)

Description copied from interface: WALActionsListener

The WAL is going to be rolled. The oldPath can be null if this is the first log file from the regionserver.

Specified by:

preLogRoll in interface WALActionsListener

Parameters:

oldPath - the path to the old wal

newPath - the path to the new wal

postLogRoll

public void postLogRoll(org.apache.hadoop.fs.Path oldPath,
 org.apache.hadoop.fs.Path newPath)

Description copied from interface: WALActionsListener

The WAL has been rolled. The oldPath can be null if this is the first log file from the regionserver.

Specified by:

postLogRoll in interface WALActionsListener

Parameters:

oldPath - the path to the old wal

newPath - the path to the new wal

getPayload

private WALEventTrackerPayload getPayload(String path,
 String state,
 long walLength)