org.apache.hadoop.hbase.io.hfile

Class LruBlockCache.BlockBucket

java.lang.Object

org.apache.hadoop.hbase.io.hfile.LruBlockCache.BlockBucket

All Implemented Interfaces:

Comparable<LruBlockCache.BlockBucket>

Enclosing class:

LruBlockCache

private class LruBlockCache.BlockBucket
extends Object
implements Comparable<LruBlockCache.BlockBucket>

Used to group blocks into priority buckets. There will be a BlockBucket for each priority (single, multi, memory). Once bucketed, the eviction algorithm takes the appropriate number of elements out of each according to configuration parameters and their relatives sizes.

Field Summary

Fields

Modifier and Type	Field and Description
private long	bucketSize
private String	name
private LruCachedBlockQueue	queue
private long	totalSize

Constructor Summary

Constructors

Constructor and Description
BlockBucket(String name, long bytesToFree, long blockSize, long bucketSize)

Method Summary

Modifier and Type	Method and Description
void	add(LruCachedBlock block)
int	compareTo(LruBlockCache.BlockBucket that)
boolean	equals(Object that)
long	free(long toFree)
int	hashCode()
long	overflow()
String	toString()
long	totalSize()

Methods inherited from class java.lang.Object

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

Field Detail

name

private final String name

queue

private LruCachedBlockQueue queue

totalSize

private long totalSize

bucketSize

private long bucketSize

Constructor Detail

BlockBucket

public BlockBucket(String name,
                   long bytesToFree,
                   long blockSize,
                   long bucketSize)

Method Detail

add

public void add(LruCachedBlock block)

free

public long free(long toFree)

overflow

public long overflow()

totalSize

public long totalSize()

compareTo

public int compareTo(LruBlockCache.BlockBucket that)

Specified by:

compareTo in interface Comparable<LruBlockCache.BlockBucket>

equals

public boolean equals(Object that)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

toString

public String toString()

Overrides:

toString in class Object