Uses of Interface
org.apache.hadoop.hbase.io.HeapSize

Packages that use HeapSize

Package	Description
org.apache.hadoop.hbase
org.apache.hadoop.hbase.client	Provides HBase Client
org.apache.hadoop.hbase.io
org.apache.hadoop.hbase.io.hfile	Provides implementations of HFile and HFile BlockCache.
org.apache.hadoop.hbase.io.hfile.bucket	Provides BucketCache, an implementation of BlockCache.
org.apache.hadoop.hbase.regionserver
org.apache.hadoop.hbase.regionserver.wal
org.apache.hadoop.hbase.wal

Uses of HeapSize in org.apache.hadoop.hbase

Classes in org.apache.hadoop.hbase that implement HeapSize

Modifier and Type	Class and Description
class	KeyValue An HBase Key/Value.
static class	KeyValue.KeyOnlyKeyValue A simple form of KeyValue that creates a keyvalue with only the key part of the byte[] Mainly used in places where we need to compare two cells.
class	NoTagsKeyValue An extension of the KeyValue where the tags length is always 0
class	TagRewriteCell This can be used when a Cell has to change with addition/removal of one or more tags.

Uses of HeapSize in org.apache.hadoop.hbase.client

Classes in org.apache.hadoop.hbase.client that implement HeapSize

Modifier and Type	Class and Description
class	Append Performs Append operations on a single row.
class	Delete Used to perform Delete operations on a single row.
class	Increment Used to perform Increment operations on a single row.
class	Mutation
class	Put Used to perform Put operations for a single row.

Uses of HeapSize in org.apache.hadoop.hbase.io

Subinterfaces of HeapSize in org.apache.hadoop.hbase.io

Modifier and Type	Interface and Description
interface	SizedCellScanner A CellScanner that knows its size in memory in bytes.

Uses of HeapSize in org.apache.hadoop.hbase.io.hfile

Subinterfaces of HeapSize in org.apache.hadoop.hbase.io.hfile

Modifier and Type	Interface and Description
interface	Cacheable Cacheable is an interface that allows for an object to be cached.

Classes in org.apache.hadoop.hbase.io.hfile that implement HeapSize

Modifier and Type	Class and Description
class	BlockCacheKey Cache Key for use with implementations of BlockCache
class	CombinedBlockCache CombinedBlockCache is an abstraction layer that combines LruBlockCache and BucketCache.
class	HFileBlock Reading HFile version 1 and 2 blocks, and writing version 2 blocks.
static class	HFileBlockIndex.BlockIndexReader The reader will always hold the root level index in the memory.
class	HFileContext This carries the information on some of the meta data about the HFile.
class	InclusiveCombinedBlockCache
class	LruBlockCache A block cache implementation that is memory-aware using HeapSize, memory-bound using an LRU eviction algorithm, and concurrent: backed by a ConcurrentHashMap and with a non-blocking eviction thread giving constant-time LruBlockCache.cacheBlock(org.apache.hadoop.hbase.io.hfile.BlockCacheKey, org.apache.hadoop.hbase.io.hfile.Cacheable, boolean, boolean) and LruBlockCache.getBlock(org.apache.hadoop.hbase.io.hfile.BlockCacheKey, boolean, boolean, boolean) operations.
class	LruCachedBlock Represents an entry in the LruBlockCache.
class	LruCachedBlockQueue A memory-bound queue that will grow until an element brings total size >= maxSize.

Uses of HeapSize in org.apache.hadoop.hbase.io.hfile.bucket

Classes in org.apache.hadoop.hbase.io.hfile.bucket that implement HeapSize

Modifier and Type	Class and Description
class	BucketCache BucketCache uses BucketAllocator to allocate/free blocks, and uses BucketCache.ramCache and BucketCache.backingMap in order to determine if a given element is in the cache.

Uses of HeapSize in org.apache.hadoop.hbase.regionserver

Classes in org.apache.hadoop.hbase.regionserver with type parameters of type HeapSize

Modifier and Type	Class and Description
class	LruHashMap<K extends HeapSize,V extends HeapSize> The LruHashMap is a memory-aware HashMap with a configurable maximum memory footprint.
class	LruHashMap<K extends HeapSize,V extends HeapSize> The LruHashMap is a memory-aware HashMap with a configurable maximum memory footprint.
protected static class	LruHashMap.Entry<K extends HeapSize,V extends HeapSize> Entry to store key/value mappings.
protected static class	LruHashMap.Entry<K extends HeapSize,V extends HeapSize> Entry to store key/value mappings.

Subinterfaces of HeapSize in org.apache.hadoop.hbase.regionserver

Modifier and Type	Interface and Description
interface	MemStore The MemStore holds in-memory modifications to the Store.
interface	Store Interface for objects that hold a column family in a Region.

Classes in org.apache.hadoop.hbase.regionserver that implement HeapSize

Modifier and Type	Class and Description
class	DefaultMemStore The MemStore holds in-memory modifications to the Store.
class	HRegion
class	HStore A Store holds a column family in a Region.
class	LruHashMap<K extends HeapSize,V extends HeapSize> The LruHashMap is a memory-aware HashMap with a configurable maximum memory footprint.
protected static class	LruHashMap.Entry<K extends HeapSize,V extends HeapSize> Entry to store key/value mappings.

Fields in org.apache.hadoop.hbase.regionserver declared as HeapSize

Modifier and Type	Field and Description
protected K	LruHashMap.Entry.key The key
protected V	LruHashMap.Entry.value The value

Uses of HeapSize in org.apache.hadoop.hbase.regionserver.wal

Classes in org.apache.hadoop.hbase.regionserver.wal that implement HeapSize

Modifier and Type	Class and Description
class	WALEdit WALEdit: Used in HBase's transaction log (WAL) to represent the collection of edits (KeyValue objects) corresponding to a single transaction.

Uses of HeapSize in org.apache.hadoop.hbase.wal

Classes in org.apache.hadoop.hbase.wal that implement HeapSize

Modifier and Type	Class and Description
static class	WALSplitter.RegionEntryBuffer A buffer of some number of edits for a given region.