org.apache.hadoop.hbase.replication.regionserver

Class ReplicationSource.ReplicationSourceWorkerThread

java.lang.Object

java.lang.Thread

org.apache.hadoop.hbase.replication.regionserver.ReplicationSource.ReplicationSourceWorkerThread

All Implemented Interfaces:

Runnable

Enclosing class:

ReplicationSource

public class ReplicationSource.ReplicationSourceWorkerThread
extends Thread

Nested Class Summary

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

Thread.State, Thread.UncaughtExceptionHandler

Field Summary

Fields inherited from class java.lang.Thread

MAX_PRIORITY, MIN_PRIORITY, NORM_PRIORITY

Constructor Summary

Constructors

Constructor and Description
ReplicationSource.ReplicationSourceWorkerThread(String walGroupId, PriorityBlockingQueue<org.apache.hadoop.fs.Path> queue, ReplicationQueueInfo replicationQueueInfo, ReplicationSource source)

Method Summary

Methods

Modifier and Type	Method and Description
org.apache.hadoop.fs.Path	getCurrentPath()
long	getCurrentPosition()
protected boolean	getNextPath() Poll for the next path
protected boolean	openReader(int sleepMultiplier) Open a reader on the current path
protected boolean	processEndOfFile() If the queue isn't empty, switch to the next one Else if this is a recovered queue, it means we're done! Else we'll just continue to try reading the log file
protected boolean	readAllEntriesToReplicateOrNextFile(boolean currentWALisBeingWrittenTo, List<WAL.Entry> entries) Read all the entries from the current log files and retain those that need to be replicated.
void	run()
void	setWorkerRunning(boolean workerRunning)
protected void	shipEdits(boolean currentWALisBeingWrittenTo, List<WAL.Entry> entries) Do the shipping logic
void	startup()

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

Constructor Detail

ReplicationSource.ReplicationSourceWorkerThread

public ReplicationSource.ReplicationSourceWorkerThread(String walGroupId,
                                               PriorityBlockingQueue<org.apache.hadoop.fs.Path> queue,
                                               ReplicationQueueInfo replicationQueueInfo,
                                               ReplicationSource source)

Method Detail

run

public void run()

Specified by:

run in interface Runnable

Overrides:

run in class Thread

readAllEntriesToReplicateOrNextFile

protected boolean readAllEntriesToReplicateOrNextFile(boolean currentWALisBeingWrittenTo,
                                          List<WAL.Entry> entries)
                                               throws IOException

Read all the entries from the current log files and retain those that need to be replicated. Else, process the end of the current file.

Parameters:

currentWALisBeingWrittenTo - is the current WAL being written to

entries - resulting entries to be replicated

Returns:

true if we got nothing and went to the next file, false if we got entries

Throws:

IOException

getNextPath

protected boolean getNextPath()

Poll for the next path

Returns:

true if a path was obtained, false if not

openReader

protected boolean openReader(int sleepMultiplier)

Open a reader on the current path

Parameters:

sleepMultiplier - by how many times the default sleeping time is augmented

Returns:

true if we should continue with that file, false if we are over with it

shipEdits

protected void shipEdits(boolean currentWALisBeingWrittenTo,
             List<WAL.Entry> entries)

Do the shipping logic

Parameters:

currentWALisBeingWrittenTo - was the current WAL being (seemingly) written to when this method was called

processEndOfFile

protected boolean processEndOfFile()

If the queue isn't empty, switch to the next one Else if this is a recovered queue, it means we're done! Else we'll just continue to try reading the log file

Returns:

true if we're done with the current file, false if we should continue trying to read from it

startup

public void startup()

getCurrentPath

public org.apache.hadoop.fs.Path getCurrentPath()

getCurrentPosition

public long getCurrentPosition()

setWorkerRunning

public void setWorkerRunning(boolean workerRunning)