Package 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

@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

Modifier and Type	Field	Description
private final String	archivedWALSuffix
private MasterRegionFlusherAndCompactor	flusherAndCompactor
private final org.apache.hadoop.fs.FileSystem	fs
private final org.apache.hadoop.fs.Path	globalWALArchiveDir
private static final org.slf4j.Logger	LOG
private final org.apache.hadoop.fs.Path	walArchiveDir

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

Constructor Summary

Constructors

Modifier	Constructor	Description
private	MasterRegionWALRoller(String name, org.apache.hadoop.conf.Configuration conf, Abortable abortable, org.apache.hadoop.fs.FileSystem fs, org.apache.hadoop.fs.Path walRootDir, org.apache.hadoop.fs.Path globalWALRootDir, String archivedWALSuffix)

Method Summary

Modifier and Type	Method	Description
protected void	afterWALArchive(org.apache.hadoop.fs.Path oldPath, org.apache.hadoop.fs.Path newPath)
(package private) static MasterRegionWALRoller	create(String name, org.apache.hadoop.conf.Configuration conf, Abortable abortable, org.apache.hadoop.fs.FileSystem fs, org.apache.hadoop.fs.Path walRootDir, org.apache.hadoop.fs.Path globalWALRootDir, String archivedWALSuffix, long rollPeriodMs, long flushSize)
protected void	scheduleFlush(String encodedRegionName, List<byte[]> families)
(package private) void	setFlusherAndCompactor(MasterRegionFlusherAndCompactor flusherAndCompactor)

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

Methods inherited from class java.lang.Object

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

Field Details

LOG

private static final org.slf4j.Logger LOG

flusherAndCompactor

private volatile MasterRegionFlusherAndCompactor flusherAndCompactor

fs

private final org.apache.hadoop.fs.FileSystem fs

walArchiveDir

private final org.apache.hadoop.fs.Path walArchiveDir

globalWALArchiveDir

private final org.apache.hadoop.fs.Path globalWALArchiveDir

archivedWALSuffix

private final String archivedWALSuffix

Constructor Details

MasterRegionWALRoller

private MasterRegionWALRoller(String name,
 org.apache.hadoop.conf.Configuration conf,
 Abortable abortable,
 org.apache.hadoop.fs.FileSystem fs,
 org.apache.hadoop.fs.Path walRootDir,
 org.apache.hadoop.fs.Path globalWALRootDir,
 String archivedWALSuffix)

Method Details

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.

setFlusherAndCompactor

void setFlusherAndCompactor(MasterRegionFlusherAndCompactor flusherAndCompactor)

create

static MasterRegionWALRoller create(String name,
 org.apache.hadoop.conf.Configuration conf,
 Abortable abortable,
 org.apache.hadoop.fs.FileSystem fs,
 org.apache.hadoop.fs.Path walRootDir,
 org.apache.hadoop.fs.Path globalWALRootDir,
 String archivedWALSuffix,
 long rollPeriodMs,
 long flushSize)