org.apache.hadoop.hive.ql.io.orc

Class RecordReaderUtils.ByteBufferAllocatorPool

java.lang.Object

org.apache.hadoop.hive.ql.io.orc.RecordReaderUtils.ByteBufferAllocatorPool

All Implemented Interfaces:

HadoopShims.ByteBufferPoolShim

Enclosing class:

RecordReaderUtils

public static final class RecordReaderUtils.ByteBufferAllocatorPool
extends Object
implements HadoopShims.ByteBufferPoolShim

Constructor Summary

Constructors

Constructor and Description
RecordReaderUtils.ByteBufferAllocatorPool()

Method Summary

Methods

Modifier and Type	Method and Description
void	clear()
ByteBuffer	getBuffer(boolean direct, int length) Get a new ByteBuffer from the pool.
void	putBuffer(ByteBuffer buffer) Release a buffer back to the pool.

Methods inherited from class java.lang.Object

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

Constructor Detail

RecordReaderUtils.ByteBufferAllocatorPool

public RecordReaderUtils.ByteBufferAllocatorPool()

Method Detail

clear

public void clear()

getBuffer

public ByteBuffer getBuffer(boolean direct,
                   int length)

Description copied from interface: HadoopShims.ByteBufferPoolShim

Get a new ByteBuffer from the pool. The pool can provide this from removing a buffer from its internal cache, or by allocating a new buffer.

Specified by:

getBuffer in interface HadoopShims.ByteBufferPoolShim

Parameters:

direct - Whether the buffer should be direct.

length - The minimum length the buffer will have.

Returns:

A new ByteBuffer. Its capacity can be less than what was requested, but must be at least 1 byte.

putBuffer

public void putBuffer(ByteBuffer buffer)

Description copied from interface: HadoopShims.ByteBufferPoolShim

Release a buffer back to the pool. The pool may choose to put this buffer into its cache/free it.

Specified by:

putBuffer in interface HadoopShims.ByteBufferPoolShim

Parameters:

buffer - a direct bytebuffer