org.apache.hadoop.hbase.codec.prefixtree.decode

Class ArraySearcherPool

java.lang.Object

org.apache.hadoop.hbase.codec.prefixtree.decode.ArraySearcherPool

@InterfaceAudience.Private
public class ArraySearcherPool
extends Object

Pools PrefixTreeArraySearcher objects. Each Searcher can consist of hundreds or thousands of objects and 1 is needed for each HFile during a Get operation. With tens of thousands of Gets/second, reusing these searchers may save a lot of young gen collections.

Alternative implementation would be a ByteBufferSearcherPool (not implemented yet).

Field Summary

Fields

Modifier and Type	Field and Description
protected Queue<PrefixTreeArraySearcher>	pool

Constructor Summary

Constructors

Constructor and Description
ArraySearcherPool()

Method Summary

Methods

Modifier and Type	Method and Description
void	checkIn(PrefixTreeArraySearcher searcher)
PrefixTreeArraySearcher	checkOut(ByteBuffer buffer, boolean includesMvccVersion)
String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

pool

protected Queue<PrefixTreeArraySearcher> pool

Constructor Detail

ArraySearcherPool

public ArraySearcherPool()

Method Detail

checkOut

public PrefixTreeArraySearcher checkOut(ByteBuffer buffer,
                               boolean includesMvccVersion)

checkIn

public void checkIn(PrefixTreeArraySearcher searcher)

toString

public String toString()

Overrides:

toString in class Object