org.apache.hadoop.hbase.regionserver

Class MutableSegment

java.lang.Object

org.apache.hadoop.hbase.regionserver.Segment

org.apache.hadoop.hbase.regionserver.MutableSegment

All Implemented Interfaces:

MemStoreSizing

@InterfaceAudience.Private
public class MutableSegment
extends Segment

A mutable segment in memstore, specifically the active segment.

Field Summary

Fields

Modifier and Type	Field and Description
static long	DEEP_OVERHEAD
private AtomicBoolean	flushed

Fields inherited from class org.apache.hadoop.hbase.regionserver.Segment

FIXED_OVERHEAD, memStoreSizing, minSequenceId, tagsPresent, timeRangeTracker

Fields inherited from interface org.apache.hadoop.hbase.regionserver.MemStoreSizing

DUD

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	MutableSegment(CellSet cellSet, CellComparator comparator, MemStoreLAB memStoreLAB, MemStoreSizing memstoreSizing)

Method Summary

Modifier and Type	Method and Description
void	add(Cell cell, boolean mslabUsed, MemStoreSizing memStoreSizing, boolean sizeAddedPreOperation) Adds the given cell into the segment
(package private) Cell	first() Returns the first cell in the segment
protected long	indexEntrySize()
boolean	setInMemoryFlushed()
void	upsert(Cell cell, long readpoint, MemStoreSizing memStoreSizing, boolean sizeAddedPreOperation)

Methods inherited from class org.apache.hadoop.hbase.regionserver.Segment

close, compare, compareAndSetDataSize, compareRows, decScannerCount, dump, getCellLength, getCellsCount, getCellSet, getComparator, getDataSize, getHeapSize, getMemStoreLAB, getMemStoreSize, getMinSequenceId, getOffHeapSize, getScanner, getScanners, getTimeRangeTracker, headSet, heapSizeChange, incMemStoreSize, incScannerCount, indexEntryOffHeapSize, indexEntryOnHeapSize, internalAdd, isEmpty, isTagsPresent, iterator, last, maybeCloneWithAllocator, offHeapSizeChange, setCellSet, sharedLock, sharedUnlock, shouldSeek, tailSet, toString, updateMetaInfo, updateMetaInfo, waitForUpdates

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.hadoop.hbase.regionserver.MemStoreSizing

decMemStoreSize, decMemStoreSize, incMemStoreSize

Field Detail

flushed

private final AtomicBoolean flushed

DEEP_OVERHEAD

public static final long DEEP_OVERHEAD

Constructor Detail

MutableSegment

protected MutableSegment(CellSet cellSet,
                         CellComparator comparator,
                         MemStoreLAB memStoreLAB,
                         MemStoreSizing memstoreSizing)

Method Detail

add

public void add(Cell cell,
                boolean mslabUsed,
                MemStoreSizing memStoreSizing,
                boolean sizeAddedPreOperation)

Adds the given cell into the segment

Parameters:

cell - the cell to add

mslabUsed - whether using MSLAB

upsert

public void upsert(Cell cell,
                   long readpoint,
                   MemStoreSizing memStoreSizing,
                   boolean sizeAddedPreOperation)

setInMemoryFlushed

public boolean setInMemoryFlushed()

first

Cell first()

Returns the first cell in the segment

Returns:

the first cell in the segment

indexEntrySize

protected long indexEntrySize()

Specified by:

indexEntrySize in class Segment