org.apache.hadoop.hbase.regionserver

Class StoreFile.Writer

java.lang.Object

org.apache.hadoop.hbase.regionserver.StoreFile.Writer

All Implemented Interfaces:

Compactor.CellSink

Enclosing class:

StoreFile

public static class StoreFile.Writer
extends Object
implements Compactor.CellSink

A StoreFile writer. Use this to read/write HBase Store Files. It is package local because it is an implementation detail of the HBase regionserver.

Field Summary

Fields

Modifier and Type	Field and Description
protected int	bytesPerChecksum Bytes per Checksum
protected HFile.Writer	writer

Method Summary

Modifier and Type	Method and Description
void	append(Cell cell)
void	appendFileInfo(byte[] key, byte[] value)
void	appendMetadata(long maxSequenceId, boolean majorCompaction) Writes meta data.
void	appendMetadata(long maxSequenceId, boolean majorCompaction, long mobCellsCount) Writes meta data.
void	appendTrackedTimestampsToMetadata() Add TimestampRange and earliest put timestamp to Metadata
void	close()
Path	getPath()
boolean	hasGeneralBloom()
void	setTimeRangeTracker(TimeRangeTracker trt) Set TimeRangeTracker
void	trackTimestamps(Cell cell) Record the earlest Put timestamp.

Methods inherited from class java.lang.Object

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

Field Detail

bytesPerChecksum

protected int bytesPerChecksum

Bytes per Checksum

writer

protected HFile.Writer writer

Method Detail

appendMetadata

public void appendMetadata(long maxSequenceId,
                           boolean majorCompaction)
                    throws IOException

Writes meta data. Call before close() since its written as meta data to this file.

Parameters:

maxSequenceId - Maximum sequence id.

majorCompaction - True if this file is product of a major compaction

Throws:

IOException - problem writing to FS

appendMetadata

public void appendMetadata(long maxSequenceId,
                           boolean majorCompaction,
                           long mobCellsCount)
                    throws IOException

Writes meta data. Call before close() since its written as meta data to this file.

Parameters:

maxSequenceId - Maximum sequence id.

majorCompaction - True if this file is product of a major compaction

mobCellsCount - The number of mob cells.

Throws:

IOException - problem writing to FS

appendTrackedTimestampsToMetadata

public void appendTrackedTimestampsToMetadata()
                                       throws IOException

Add TimestampRange and earliest put timestamp to Metadata

Throws:

IOException

setTimeRangeTracker

public void setTimeRangeTracker(TimeRangeTracker trt)

Set TimeRangeTracker

Parameters:

trt -

trackTimestamps

public void trackTimestamps(Cell cell)

Record the earlest Put timestamp. If the timeRangeTracker is not set, update TimeRangeTracker to include the timestamp of this key

Parameters:

cell -

append

public void append(Cell cell)
            throws IOException

Specified by:

append in interface Compactor.CellSink

Throws:

IOException

getPath

public Path getPath()

hasGeneralBloom

public boolean hasGeneralBloom()

close

public void close()
           throws IOException

Throws:

IOException

appendFileInfo

public void appendFileInfo(byte[] key,
                           byte[] value)
                    throws IOException

Throws:

IOException