org.apache.hadoop.hbase.regionserver.wal

类 WALActionsListener.Base

java.lang.Object

org.apache.hadoop.hbase.regionserver.wal.WALActionsListener.Base

所有已实现的接口:

WALActionsListener

直接已知子类:

MetricsWAL, Replication

封闭接口:

WALActionsListener

public static class WALActionsListener.Base
extends Object
implements WALActionsListener

嵌套类概要

从接口继承的嵌套类/接口 org.apache.hadoop.hbase.regionserver.wal.WALActionsListener

WALActionsListener.Base

构造器概要

构造器

构造器和说明
WALActionsListener.Base()

方法概要

方法

限定符和类型	方法和说明
void	logCloseRequested() The WAL is about to close.
void	logRollRequested(boolean tooFewReplicas) A request was made that the WAL be rolled.
void	postAppend(long entryLen, long elapsedTimeMillis, WALKey logKey, WALEdit logEdit) For notification post append to the writer.
void	postLogArchive(org.apache.hadoop.fs.Path oldPath, org.apache.hadoop.fs.Path newPath) The WAL has been archived.
void	postLogRoll(org.apache.hadoop.fs.Path oldPath, org.apache.hadoop.fs.Path newPath) The WAL has been rolled.
void	postSync(long timeInNanos, int handlerSyncs) For notification post writer sync.
void	preLogArchive(org.apache.hadoop.fs.Path oldPath, org.apache.hadoop.fs.Path newPath) The WAL is going to be archived.
void	preLogRoll(org.apache.hadoop.fs.Path oldPath, org.apache.hadoop.fs.Path newPath) The WAL is going to be rolled.
void	visitLogEntryBeforeWrite(HRegionInfo info, WALKey logKey, WALEdit logEdit) Called before each write.
void	visitLogEntryBeforeWrite(HTableDescriptor htd, WALKey logKey, WALEdit logEdit)

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

WALActionsListener.Base

public WALActionsListener.Base()

方法详细资料

preLogRoll

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

从接口复制的说明: WALActionsListener

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

指定者:

preLogRoll 在接口中 WALActionsListener

参数:

oldPath - the path to the old wal

newPath - the path to the new wal

抛出:

IOException

postLogRoll

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

从接口复制的说明: WALActionsListener

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

指定者:

postLogRoll 在接口中 WALActionsListener

参数:

oldPath - the path to the old wal

newPath - the path to the new wal

抛出:

IOException

preLogArchive

public void preLogArchive(org.apache.hadoop.fs.Path oldPath,
                 org.apache.hadoop.fs.Path newPath)
                   throws IOException

从接口复制的说明: WALActionsListener

The WAL is going to be archived.

指定者:

preLogArchive 在接口中 WALActionsListener

参数:

oldPath - the path to the old wal

newPath - the path to the new wal

抛出:

IOException

postLogArchive

public void postLogArchive(org.apache.hadoop.fs.Path oldPath,
                  org.apache.hadoop.fs.Path newPath)
                    throws IOException

从接口复制的说明: WALActionsListener

The WAL has been archived.

指定者:

postLogArchive 在接口中 WALActionsListener

参数:

oldPath - the path to the old wal

newPath - the path to the new wal

抛出:

IOException

logRollRequested

public void logRollRequested(boolean tooFewReplicas)

从接口复制的说明: WALActionsListener

A request was made that the WAL be rolled.

指定者:

logRollRequested 在接口中 WALActionsListener

logCloseRequested

public void logCloseRequested()

从接口复制的说明: WALActionsListener

The WAL is about to close.

指定者:

logCloseRequested 在接口中 WALActionsListener

visitLogEntryBeforeWrite

public void visitLogEntryBeforeWrite(HRegionInfo info,
                            WALKey logKey,
                            WALEdit logEdit)

从接口复制的说明: WALActionsListener

Called before each write.

指定者:

visitLogEntryBeforeWrite 在接口中 WALActionsListener

visitLogEntryBeforeWrite

public void visitLogEntryBeforeWrite(HTableDescriptor htd,
                            WALKey logKey,
                            WALEdit logEdit)
                              throws IOException

指定者:

visitLogEntryBeforeWrite 在接口中 WALActionsListener

logEdit - TODO: Retire this in favor of WALActionsListener.visitLogEntryBeforeWrite(HRegionInfo, WALKey, WALEdit) It only exists to get scope when replicating. Scope should be in the WALKey and not need us passing in a htd.

抛出:

IOException - If failed to parse the WALEdit

postAppend

public void postAppend(long entryLen,
              long elapsedTimeMillis,
              WALKey logKey,
              WALEdit logEdit)
                throws IOException

从接口复制的说明: WALActionsListener

For notification post append to the writer. Used by metrics system at least. TODO: Combine this with above.

指定者:

postAppend 在接口中 WALActionsListener

参数:

entryLen - approx length of cells in this append.

elapsedTimeMillis - elapsed time in milliseconds.

logKey - A WAL key

logEdit - A WAL edit containing list of cells.

抛出:

IOException - if any network or I/O occurred

postSync

public void postSync(long timeInNanos,
            int handlerSyncs)

从接口复制的说明: WALActionsListener

For notification post writer sync. Used by metrics system at least.

指定者:

postSync 在接口中 WALActionsListener

参数:

timeInNanos - How long the filesystem sync took in nanoseconds.

handlerSyncs - How many sync handler calls were released by this call to filesystem sync.