org.apache.hadoop.hbase.io

Class DeallocateRewriteByteBuffAllocator

java.lang.Object

org.apache.hadoop.hbase.io.ByteBuffAllocator

org.apache.hadoop.hbase.io.DeallocateRewriteByteBuffAllocator

@InterfaceAudience.Private
public class DeallocateRewriteByteBuffAllocator
extends ByteBuffAllocator

A ByteBuffAllocator that rewrite the bytebuffers right after released. It can be used for test whether there are prematurely releasing backing bytebuffers.

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.hadoop.hbase.io.ByteBuffAllocator

ByteBuffAllocator.Recycler

Field Summary

Fields

Modifier and Type	Field and Description
private static org.slf4j.Logger	LOG

Fields inherited from class org.apache.hadoop.hbase.io.ByteBuffAllocator

ALLOCATOR_POOL_ENABLED_KEY, BUFFER_SIZE_KEY, bufSize, BYTEBUFF_ALLOCATOR_CLASS, DEFAULT_BUFFER_SIZE, DEPRECATED_ALLOCATOR_POOL_ENABLED_KEY, DEPRECATED_BUFFER_SIZE_KEY, DEPRECATED_MAX_BUFFER_COUNT_KEY, HEAP, MAX_BUFFER_COUNT_KEY, MIN_ALLOCATE_SIZE_KEY, NONE, reservoirEnabled

Constructor Summary

Constructors

Constructor and Description
DeallocateRewriteByteBuffAllocator(boolean reservoirEnabled, int maxBufCount, int bufSize, int minSizeForReservoirUse)

Method Summary

Modifier and Type	Method and Description
private byte[]	generateTmpBytes(int length)
protected void	putbackBuffer(ByteBuffer buf) Return back a ByteBuffer after its use.

Methods inherited from class org.apache.hadoop.hbase.io.ByteBuffAllocator

allocate, allocateOneBuffer, clean, create, getBufferSize, getFreeBufferCount, getHeapAllocationBytes, getHeapAllocationBytes, getHeapAllocationRatio, getPoolAllocationBytes, getTotalBufferCount, getUsedBufferCount, isReservoirEnabled

Methods inherited from class java.lang.Object

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

Field Detail

LOG

private static final org.slf4j.Logger LOG

Constructor Detail

DeallocateRewriteByteBuffAllocator

DeallocateRewriteByteBuffAllocator(boolean reservoirEnabled,
                                   int maxBufCount,
                                   int bufSize,
                                   int minSizeForReservoirUse)

Method Detail

putbackBuffer

protected void putbackBuffer(ByteBuffer buf)

Description copied from class: ByteBuffAllocator

Return back a ByteBuffer after its use. Don't read/write the ByteBuffer after the returning.

Overrides:

putbackBuffer in class ByteBuffAllocator

Parameters:

buf - ByteBuffer to return.

generateTmpBytes

private byte[] generateTmpBytes(int length)