org.apache.hadoop.hbase.regionserver

Class RegionServerAccounting

java.lang.Object

org.apache.hadoop.hbase.regionserver.RegionServerAccounting

@InterfaceAudience.Private
public class RegionServerAccounting
extends Object

RegionServerAccounting keeps record of some basic real time information about the Region Server. Currently, it keeps record the global memstore size and global memstore on-heap and off-heap overhead. It also tracks the replay edits per region.

Constructor Summary

Constructors

Constructor and Description
RegionServerAccounting(org.apache.hadoop.conf.Configuration conf)

Method Summary

Modifier and Type	Method and Description
void	addRegionReplayEditsSize(byte[] regionName, MemStoreSize memStoreSize) Add memStoreSize to replayEditsPerRegion.
void	clearRegionReplayEditsSize(byte[] regionName) Clear a region from replayEditsPerRegion.
void	decGlobalMemStoreSize(MemStoreSize memStoreSize)
double	getFlushPressure()
long	getGlobalMemStoreDataSize()
long	getGlobalMemStoreHeapSize()
long	getGlobalMemStoreOffHeapSize()
void	incGlobalMemStoreSize(MemStoreSize memStoreSize)
org.apache.hadoop.hbase.regionserver.FlushType	isAboveHighWaterMark() Return true if we are above the memstore high water mark
org.apache.hadoop.hbase.regionserver.FlushType	isAboveLowWaterMark() Return true if we're above the low watermark
void	rollbackRegionReplayEditsSize(byte[] regionName) Roll back the global MemStore size for a specified region when this region can't be opened.

Methods inherited from class java.lang.Object

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

Constructor Detail

RegionServerAccounting

public RegionServerAccounting(org.apache.hadoop.conf.Configuration conf)

Method Detail

getGlobalMemStoreDataSize

public long getGlobalMemStoreDataSize()

Returns:

the global Memstore data size in the RegionServer

getGlobalMemStoreHeapSize

public long getGlobalMemStoreHeapSize()

Returns:

the global memstore heap size in the RegionServer

getGlobalMemStoreOffHeapSize

public long getGlobalMemStoreOffHeapSize()

Returns:

the global memstore heap size in the RegionServer

incGlobalMemStoreSize

public void incGlobalMemStoreSize(MemStoreSize memStoreSize)

Parameters:

memStoreSize - the Memstore size will be added to the global Memstore size

decGlobalMemStoreSize

public void decGlobalMemStoreSize(MemStoreSize memStoreSize)

isAboveHighWaterMark

public org.apache.hadoop.hbase.regionserver.FlushType isAboveHighWaterMark()

Return true if we are above the memstore high water mark

Returns:

the flushtype

isAboveLowWaterMark

public org.apache.hadoop.hbase.regionserver.FlushType isAboveLowWaterMark()

Return true if we're above the low watermark

getFlushPressure

public double getFlushPressure()

Returns:

the flush pressure of all stores on this regionserver. The value should be greater than or equal to 0.0, and any value greater than 1.0 means we enter the emergency state that global memstore size already exceeds lower limit.

addRegionReplayEditsSize

public void addRegionReplayEditsSize(byte[] regionName,
                                     MemStoreSize memStoreSize)

Add memStoreSize to replayEditsPerRegion.

Parameters:

regionName - region name.

memStoreSize - the Memstore size will be added to replayEditsPerRegion.

rollbackRegionReplayEditsSize

public void rollbackRegionReplayEditsSize(byte[] regionName)

Roll back the global MemStore size for a specified region when this region can't be opened.

Parameters:

regionName - the region which could not open.

clearRegionReplayEditsSize

public void clearRegionReplayEditsSize(byte[] regionName)

Clear a region from replayEditsPerRegion.

Parameters:

regionName - region name.