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.filter	Provides row-level filters applied to HRegion scan results during calls to ResultScanner.next().
org.apache.hadoop.hbase.io
org.apache.hadoop.hbase.io.encoding
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.quotas
org.apache.hadoop.hbase.regionserver
org.apache.hadoop.hbase.util
org.apache.hadoop.hbase.wal

Uses of HeapSize in org.apache.hadoop.hbase

Subinterfaces of HeapSize in org.apache.hadoop.hbase

Modifier and Type	Interface and Description
interface	Cell The unit of storage in HBase consisting of the following fields:
interface	ExtendedCell Extension to Cell with server side required functions.
interface	RawCell An extended version of Cell that allows CPs manipulate Tags.

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

Modifier and Type	Class and Description
class	ByteBufferExtendedCell This class is a server side extension to the Cell interface.
class	ByteBufferKeyOnlyKeyValue This is a key only Cell implementation which is identical to KeyValue.KeyOnlyKeyValue with respect to key serialization but have its data in the form of Byte buffer (onheap and offheap).
class	ByteBufferKeyValue This Cell is an implementation of ByteBufferExtendedCell where the data resides in off heap/ on heap ByteBuffer
class	IndividualBytesFieldCell
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	NoTagsByteBufferKeyValue An extension of the ByteBufferKeyValue where the tags length is always 0
class	NoTagsKeyValue An extension of the KeyValue where the tags length is always 0
private static class	PrivateCellUtil.EmptyByteBufferExtendedCell These cells are used in reseeks/seeks to improve the read performance.
private static class	PrivateCellUtil.EmptyCell These cells are used in reseeks/seeks to improve the read performance.
private static class	PrivateCellUtil.FirstOnRowByteBufferExtendedCell
private static class	PrivateCellUtil.FirstOnRowCell
private static class	PrivateCellUtil.FirstOnRowColByteBufferExtendedCell
private static class	PrivateCellUtil.FirstOnRowColCell
private static class	PrivateCellUtil.FirstOnRowColTSByteBufferExtendedCell
private static class	PrivateCellUtil.FirstOnRowColTSCell
private static class	PrivateCellUtil.FirstOnRowDeleteFamilyCell
private static class	PrivateCellUtil.LastOnRowByteBufferExtendedCell
private static class	PrivateCellUtil.LastOnRowCell
private static class	PrivateCellUtil.LastOnRowColByteBufferExtendedCell
private static class	PrivateCellUtil.LastOnRowColCell
(package private) static class	PrivateCellUtil.TagRewriteByteBufferExtendedCell
(package private) static class	PrivateCellUtil.TagRewriteCell This can be used when a Cell has to change with addition/removal of one or more tags.
(package private) static class	PrivateCellUtil.ValueAndTagRewriteByteBufferExtendedCell
(package private) static class	PrivateCellUtil.ValueAndTagRewriteCell
class	SizeCachedByteBufferKeyValue This Cell is an implementation of ByteBufferExtendedCell where the data resides in off heap/ on heap ByteBuffer
class	SizeCachedKeyValue This class is an extension to KeyValue where rowLen and keyLen are cached.
class	SizeCachedNoTagsByteBufferKeyValue This Cell is an implementation of ByteBufferExtendedCell where the data resides in off heap/ on heap ByteBuffer
class	SizeCachedNoTagsKeyValue This class is an extension to ContentSizeCachedKeyValue where there are no tags in Cell.

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
private static class	Mutation.CellWrapper
class	Put Used to perform Put operations for a single row.

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

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

Modifier and Type	Class and Description
(package private) static class	KeyOnlyFilter.KeyOnlyByteBufferExtendedCell
(package private) static class	KeyOnlyFilter.KeyOnlyCell

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.encoding

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

Modifier and Type	Class and Description
protected static class	BufferedDataBlockEncoder.OffheapDecodedExtendedCell
protected static class	BufferedDataBlockEncoder.OnheapDecodedCell Copies only the key part of the keybuffer by doing a deep copy and passes the seeker state members for taking a clone.

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.
interface	FirstLevelBlockCache In-memory BlockCache that may be backed by secondary layer(s).

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 FirstLevelBlockCache and BucketCache.
class	ExclusiveMemHFileBlock The ByteBuffAllocator won't allocate pooled heap ByteBuff now; at the same time, if allocate an off-heap ByteBuff from allocator, then it must be a pooled one.
class	HFileBlock Cacheable Blocks of an HFile version 2 file.
(package private) static class	HFileBlockIndex.BlockIndexReader The reader will always hold the root level index in the memory.
(package private) static class	HFileBlockIndex.ByteArrayKeyBlockIndexReader An implementation of the BlockIndexReader that deals with block keys which are plain byte[] like MetaBlock or the Bloom Block for ROW bloom.
(package private) static class	HFileBlockIndex.CellBasedKeyBlockIndexReader An implementation of the BlockIndexReader that deals with block keys which are the key part of a cell like the Data block index or the ROW_COL bloom blocks This needs a comparator to work with the Cells
class	HFileContext Read-only HFile Context Information.
class	InclusiveCombinedBlockCache
class	IndexOnlyLruBlockCache An on heap block cache implementation extended LruBlockCache and only cache index block.
class	LruAdaptiveBlockCache This realisation improve performance of classical LRU cache up to 3 times via reduce GC job.
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) 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.
class	SharedMemHFileBlock The ByteBuffAllocator won't allocate pooled heap ByteBuff now; at the same time, if allocate an off-heap ByteBuff from allocator, then it must be a pooled one.
class	TinyLfuBlockCache A block cache that is memory-aware using HeapSize, memory bounded using the W-TinyLFU eviction algorithm, and concurrent.

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.quotas

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

Modifier and Type	Interface and Description
interface	RegionSize Interface that encapsulates optionally sending a Region's size to the master.
interface	RegionSizeStore An interface for concurrently storing and updating the size of a Region.

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

Modifier and Type	Class and Description
class	NoOpRegionSizeStore A RegionSizeStore implementation that stores nothing.
class	RegionSizeImpl An object encapsulating a Region's size and whether it's been reported to the master since the value last changed.
class	RegionSizeStoreImpl A RegionSizeStore implementation backed by a ConcurrentHashMap.

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

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

Modifier and Type	Class and Description
class	ByteBufferChunkKeyValue ByteBuffer based cell which has the chunkid at the 0th offset
class	HMobStore The store implementation to save MOBs (medium objects), it extends the HStore.
class	HRegion Regions store data for a certain region of a table.
class	HStore A Store holds a column family in a Region.
class	NoTagByteBufferChunkKeyValue ByteBuffer based cell which has the chunkid at the 0th offset and with no tags
class	StoreContext This carries the immutable information and references on some of the meta data about the HStore.

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

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

Modifier and Type	Class and Description
class	MapReduceExtendedCell A wrapper for a cell to be used with mapreduce, as the output value class for mappers/reducers.

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	EntryBuffers.RegionEntryBuffer A buffer of some number of edits for a given region.
class	WALEdit Used in HBase's transaction log (WAL) to represent a collection of edits (Cell/KeyValue objects) that came in as a single transaction.