org.apache.hadoop.hbase.regionserver.regionreplication

Class RegionReplicationBufferManager

java.lang.Object

org.apache.hadoop.hbase.regionserver.regionreplication.RegionReplicationBufferManager

@InterfaceAudience.Private
public class RegionReplicationBufferManager
extends Object

Manager the buffer size for all RegionReplicationSink.

If the buffer size exceeds the soft limit, we will find out the region with largest pending size and trigger a flush, so it can drop all the pending entries and save memories.

If the buffer size exceeds the hard limit, we will return false for increase(long) and let the RegionReplicationSink to drop the edits immediately.

Field Summary

Fields

Modifier and Type	Field and Description
static String	MAX_PENDING_SIZE This is the total size of pending entries for all the sinks.
static long	MAX_PENDING_SIZE_DEFAULT
static String	SOFT_LIMIT_PERCENTAGE
static float	SOFT_LIMIT_PERCENTAGE_DEFAULT

Constructor Summary

Constructors

Constructor and Description
RegionReplicationBufferManager(RegionServerServices rsServices)

Method Summary

Modifier and Type	Method and Description
void	decrease(long size) Called after you ship the edits out.
boolean	increase(long size) Return whether we should just drop all the edits, if we have reached the hard limit of max pending size.
void	stop()

Methods inherited from class java.lang.Object

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

Field Detail

MAX_PENDING_SIZE

public static final String MAX_PENDING_SIZE

This is the total size of pending entries for all the sinks.

See Also:

Constant Field Values

MAX_PENDING_SIZE_DEFAULT

public static final long MAX_PENDING_SIZE_DEFAULT

See Also:

Constant Field Values

SOFT_LIMIT_PERCENTAGE

public static final String SOFT_LIMIT_PERCENTAGE

See Also:

Constant Field Values

SOFT_LIMIT_PERCENTAGE_DEFAULT

public static final float SOFT_LIMIT_PERCENTAGE_DEFAULT

See Also:

Constant Field Values

Constructor Detail

RegionReplicationBufferManager

public RegionReplicationBufferManager(RegionServerServices rsServices)

Method Detail

increase

public boolean increase(long size)

Return whether we should just drop all the edits, if we have reached the hard limit of max pending size.

Returns:

true means OK, false means drop all the edits.

decrease

public void decrease(long size)

Called after you ship the edits out.

stop

public void stop()