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

Field Summary

Fields

Modifier and Type	Field and Description
static int	DEFAULT_MAX

Method Summary

Modifier and Type	Method and Description
AgeSnapshot	getAgeInCacheSnapshot()
NavigableMap<String,NavigableSet<CachedBlock>>	getCachedBlockStatsByFile()
int	getCount()
int	getDataCount()
long	getDataSize()
long	getSize()
boolean	isFull()
String	toString()
boolean	update(CachedBlock cb) n * @return True if full....

Methods inherited from class java.lang.Object

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

Field Detail

DEFAULT_MAX

public static final int DEFAULT_MAX

See Also:

Constant Field Values

Method Detail

update

public boolean update(CachedBlock cb)

n * @return 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