org.apache.hadoop.hbase.io.hfile

Class BlockCacheUtil.CachedBlocksByFile

java.lang.Object

org.apache.hadoop.hbase.io.hfile.BlockCacheUtil.CachedBlocksByFile

Enclosing class:

BlockCacheUtil

public static class BlockCacheUtil.CachedBlocksByFile
extends Object

Use one of these to keep a running account of cached blocks by file. Throw it away when done. This is different than metrics in that it is stats on current state of a cache. See getLoadedCachedBlocksByFile

Method Summary

Modifier and Type	Method and Description
AgeSnapshot	getAgeInCacheSnapshot()
NavigableMap<String,NavigableSet<CachedBlock>>	getCachedBlockStatsByFile()
int	getCount() Returns count of blocks in the cache
int	getDataCount()
long	getDataSize() Returns Size of data.
long	getSize() Returns size of blocks in the cache
boolean	isFull()
String	toString()
boolean	update(CachedBlock cb) Returns True if full....

Methods inherited from class java.lang.Object

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

Method Detail

update

public boolean update(CachedBlock cb)

Returns True if full.... if we won't be adding any more.

isFull

public boolean isFull()

Returns:

True if full; i.e. there are more items in the cache but we only loaded up the maximum set in configuration hbase.ui.blockcache.by.file.max (Default: DEFAULT_MAX).

getCachedBlockStatsByFile

public NavigableMap<String,NavigableSet<CachedBlock>> getCachedBlockStatsByFile()

getCount

public int getCount()

Returns count of blocks in the cache

getDataCount

public int getDataCount()

getSize

public long getSize()

Returns size of blocks in the cache

getDataSize

public long getDataSize()

Returns Size of data.

getAgeInCacheSnapshot

public AgeSnapshot getAgeInCacheSnapshot()

toString

public String toString()

Overrides:

toString in class Object