org.apache.hadoop.hbase.regionserver

Class MemStoreSnapshot

java.lang.Object

org.apache.hadoop.hbase.regionserver.MemStoreSnapshot

All Implemented Interfaces:

Closeable, AutoCloseable

@InterfaceAudience.Private
public class MemStoreSnapshot
extends Object
implements Closeable

Holds details of the snapshot taken on a MemStore. Details include the snapshot's identifier, count of cells in it and total memory size occupied by all the cells, timestamp information of all the cells and a scanner to read all cells in it.

Field Summary

Fields

Modifier and Type	Field and Description
private int	cellsCount
private long	id
private MemStoreSize	memStoreSize
private List<KeyValueScanner>	scanners
private boolean	tagsPresent
private TimeRangeTracker	timeRangeTracker

Constructor Summary

Constructors

Constructor and Description
MemStoreSnapshot(long id, ImmutableSegment snapshot)

Method Summary

Modifier and Type	Method and Description
void	close()
int	getCellsCount()
long	getDataSize()
long	getId()
MemStoreSize	getMemStoreSize()
List<KeyValueScanner>	getScanners()
TimeRangeTracker	getTimeRangeTracker()
boolean	isTagsPresent()

Methods inherited from class java.lang.Object

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

Field Detail

id

private final long id

cellsCount

private final int cellsCount

memStoreSize

private final MemStoreSize memStoreSize

timeRangeTracker

private final TimeRangeTracker timeRangeTracker

scanners

private final List<KeyValueScanner> scanners

tagsPresent

private final boolean tagsPresent

Constructor Detail

MemStoreSnapshot

public MemStoreSnapshot(long id,
                        ImmutableSegment snapshot)

Method Detail

getId

public long getId()

Returns:

snapshot's identifier.

getCellsCount

public int getCellsCount()

Returns:

Number of Cells in this snapshot.

getDataSize

public long getDataSize()

getMemStoreSize

public MemStoreSize getMemStoreSize()

getTimeRangeTracker

public TimeRangeTracker getTimeRangeTracker()

Returns:

TimeRangeTracker for all the Cells in the snapshot.

getScanners

public List<KeyValueScanner> getScanners()

Returns:

KeyValueScanner for iterating over the snapshot

isTagsPresent

public boolean isTagsPresent()

Returns:

true if tags are present in this snapshot

close

public void close()

Specified by:

close in interface Closeable

Specified by:

close in interface AutoCloseable