org.apache.hadoop.hbase.regionserver

Class HeapMemoryManager

java.lang.Object

org.apache.hadoop.hbase.regionserver.HeapMemoryManager

@InterfaceAudience.Private
public class HeapMemoryManager
extends Object

Manages tuning of Heap memory using HeapMemoryTuner.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	HeapMemoryManager.TunerContext POJO to pass all the relevant information required to do the heap memory tuning.
static class	HeapMemoryManager.TunerResult POJO which holds the result of memory tuning done by HeapMemoryTuner implementation.

Field Summary

Fields

Modifier and Type	Field and Description
static String	BLOCK_CACHE_SIZE_MAX_RANGE_KEY
static String	BLOCK_CACHE_SIZE_MIN_RANGE_KEY
static String	HBASE_RS_HEAP_MEMORY_TUNER_CLASS
static int	HBASE_RS_HEAP_MEMORY_TUNER_DEFAULT_PERIOD
static String	HBASE_RS_HEAP_MEMORY_TUNER_PERIOD
static String	MEMSTORE_SIZE_MAX_RANGE_KEY
static String	MEMSTORE_SIZE_MIN_RANGE_KEY

Method Summary

Methods

Modifier and Type	Method and Description
static HeapMemoryManager	create(org.apache.hadoop.conf.Configuration conf, FlushRequester memStoreFlusher, Server server)
float	getHeapOccupancyPercent()
void	start(ChoreService service)
void	stop()

Methods inherited from class java.lang.Object

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

Field Detail

BLOCK_CACHE_SIZE_MAX_RANGE_KEY

public static final String BLOCK_CACHE_SIZE_MAX_RANGE_KEY

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Constant Field Values

BLOCK_CACHE_SIZE_MIN_RANGE_KEY

public static final String BLOCK_CACHE_SIZE_MIN_RANGE_KEY

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Constant Field Values

MEMSTORE_SIZE_MAX_RANGE_KEY

public static final String MEMSTORE_SIZE_MAX_RANGE_KEY

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Constant Field Values

MEMSTORE_SIZE_MIN_RANGE_KEY

public static final String MEMSTORE_SIZE_MIN_RANGE_KEY

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Constant Field Values

HBASE_RS_HEAP_MEMORY_TUNER_PERIOD

public static final String HBASE_RS_HEAP_MEMORY_TUNER_PERIOD

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Constant Field Values

HBASE_RS_HEAP_MEMORY_TUNER_DEFAULT_PERIOD

public static final int HBASE_RS_HEAP_MEMORY_TUNER_DEFAULT_PERIOD

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Constant Field Values

HBASE_RS_HEAP_MEMORY_TUNER_CLASS

public static final String HBASE_RS_HEAP_MEMORY_TUNER_CLASS

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Constant Field Values

Method Detail

create

public static HeapMemoryManager create(org.apache.hadoop.conf.Configuration conf,
                       FlushRequester memStoreFlusher,
                       Server server)

start

public void start(ChoreService service)

stop

public void stop()

getHeapOccupancyPercent

public float getHeapOccupancyPercent()

Returns:

heap occupancy percentage, 0 <= n <= 1