org.apache.hadoop.hbase.regionserver

Class MemStoreSize

java.lang.Object

org.apache.hadoop.hbase.regionserver.MemStoreSize

Direct Known Subclasses:

MemStoreSizing

@InterfaceAudience.LimitedPrivate(value="Coprocesssor")
public class MemStoreSize
extends Object

Reports the data size part and total heap space occupied by the MemStore. Read-only.

See Also:

MemStoreSizing

Field Summary

Fields

Modifier and Type	Field and Description
protected long	dataSize 'dataSize' tracks the Cell's data bytes size alone (Key bytes, value bytes).
protected long	heapSize 'heapSize' tracks all Cell's heap size occupancy.
protected long	offHeapSize off-heap size: the aggregated size of all data that is allocated off-heap including all key-values that reside off-heap and the metadata that resides off-heap

Constructor Summary

Constructors

Modifier	Constructor and Description
	MemStoreSize()
	MemStoreSize(long dataSize, long heapSize, long offHeapSize)
protected	MemStoreSize(MemStoreSize memStoreSize)

Method Summary

Modifier and Type	Method and Description
boolean	equals(Object obj)
long	getDataSize()
long	getHeapSize()
long	getOffHeapSize()
int	hashCode()
boolean	isEmpty()
String	toString()

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

dataSize

protected volatile long dataSize

'dataSize' tracks the Cell's data bytes size alone (Key bytes, value bytes). A cell's data can be in on heap or off heap area depending on the MSLAB and its configuration to be using on heap or off heap LABs

heapSize

protected volatile long heapSize

'heapSize' tracks all Cell's heap size occupancy. This will include Cell POJO heap overhead. When Cells in on heap area, this will include the cells data size as well.

offHeapSize

protected volatile long offHeapSize

off-heap size: the aggregated size of all data that is allocated off-heap including all key-values that reside off-heap and the metadata that resides off-heap

Constructor Detail

MemStoreSize

public MemStoreSize()

MemStoreSize

public MemStoreSize(long dataSize,
                    long heapSize,
                    long offHeapSize)

MemStoreSize

protected MemStoreSize(MemStoreSize memStoreSize)

Method Detail

isEmpty

public boolean isEmpty()

getDataSize

public long getDataSize()

getHeapSize

public long getHeapSize()

getOffHeapSize

public long getOffHeapSize()

equals

public boolean equals(Object obj)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

toString

public String toString()

Overrides:

toString in class Object