org.apache.hadoop.hbase.master.region

Class MasterRegionWALRoller

java.lang.Object

java.lang.Thread

org.apache.hadoop.hbase.wal.AbstractWALRoller<Abortable>

org.apache.hadoop.hbase.master.region.MasterRegionWALRoller

All Implemented Interfaces:

Closeable, AutoCloseable, Runnable

@InterfaceAudience.Private
public final class MasterRegionWALRoller
extends AbstractWALRoller<Abortable>

As long as there is no RegionServerServices for a master local region, we need implement log roller logic by our own.

We can reuse most of the code for normal wal roller, the only difference is that there is only one region, so in scheduleFlush(String, List) method we can just schedule flush for the master local region.

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.hadoop.hbase.wal.AbstractWALRoller

AbstractWALRoller.RollController

Nested classes/interfaces inherited from class java.lang.Thread

Thread.State, Thread.UncaughtExceptionHandler

Field Summary

Fields inherited from class org.apache.hadoop.hbase.wal.AbstractWALRoller

abortable, DEFAULT_WAL_ROLL_WAIT_TIMEOUT, WAL_ROLL_PERIOD_KEY, WAL_ROLL_RETRIES, WAL_ROLL_WAIT_TIMEOUT, wals

Fields inherited from class java.lang.Thread

MAX_PRIORITY, MIN_PRIORITY, NORM_PRIORITY

Method Summary

Modifier and Type	Method and Description
protected void	afterWALArchive(org.apache.hadoop.fs.Path oldPath, org.apache.hadoop.fs.Path newPath)
protected void	scheduleFlush(String encodedRegionName, List<byte[]> families)

Methods inherited from class org.apache.hadoop.hbase.wal.AbstractWALRoller

addWAL, close, requestRollAll, run, waitUntilWalRollFinished, walRollFinished

Methods inherited from class java.lang.Thread

activeCount, checkAccess, clone, countStackFrames, currentThread, destroy, dumpStack, enumerate, getAllStackTraces, getContextClassLoader, getDefaultUncaughtExceptionHandler, getId, getName, getPriority, getStackTrace, getState, getThreadGroup, getUncaughtExceptionHandler, holdsLock, interrupt, interrupted, isAlive, isDaemon, isInterrupted, join, join, join, resume, setContextClassLoader, setDaemon, setDefaultUncaughtExceptionHandler, setName, setPriority, setUncaughtExceptionHandler, sleep, sleep, start, stop, stop, suspend, toString, yield

Methods inherited from class java.lang.Object

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

Method Detail

afterWALArchive

protected void afterWALArchive(org.apache.hadoop.fs.Path oldPath,
                               org.apache.hadoop.fs.Path newPath)

Overrides:

afterWALArchive in class AbstractWALRoller<Abortable>

scheduleFlush

protected void scheduleFlush(String encodedRegionName,
                             List<byte[]> families)

Specified by:

scheduleFlush in class AbstractWALRoller<Abortable>

Parameters:

encodedRegionName - Encoded name of region to flush.

families - stores of region to flush.