Package org.apache.hadoop.hbase.regionserver.handler

Class ParallelSeekHandler

java.lang.Object

org.apache.hadoop.hbase.executor.EventHandler

org.apache.hadoop.hbase.regionserver.handler.ParallelSeekHandler

All Implemented Interfaces:

Comparable<EventHandler>, Runnable

@Private
public class ParallelSeekHandler
extends EventHandler

Handler to seek storefiles in parallel.

Field Summary

Fields

Modifier and Type	Field	Description
private final AtomicLong	blockReadOpsCount
private final AtomicLong	bytesReadFromBlockCache
private final AtomicLong	bytesReadFromFs
private Throwable	err
private final boolean	isScanMetricsEnabled
private ExtendedCell	keyValue
private CountDownLatch	latch
private static final org.slf4j.Logger	LOG
private long	readPoint
private KeyValueScanner	scanner

Fields inherited from class org.apache.hadoop.hbase.executor.EventHandler

eventType, seqids, server, waitingTimeForEvents

Constructor Summary

Constructors

Constructor	Description
ParallelSeekHandler(KeyValueScanner scanner, ExtendedCell keyValue, long readPoint, CountDownLatch latch)

Method Summary

Modifier and Type	Method	Description
Throwable	getErr()
void	process()	This method is the main processing loop to be implemented by the various subclasses.
void	setErr(Throwable err)

Methods inherited from class org.apache.hadoop.hbase.executor.EventHandler

compareTo, getEventType, getInformativeName, getPriority, getSeqid, handleException, prepare, run, toString

Methods inherited from class java.lang.Object

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

Field Details

LOG

private static final org.slf4j.Logger LOG

scanner

private KeyValueScanner scanner

keyValue

private ExtendedCell keyValue

readPoint

private long readPoint

latch

private CountDownLatch latch

err

private Throwable err

isScanMetricsEnabled

private final boolean isScanMetricsEnabled

bytesReadFromFs

private final AtomicLong bytesReadFromFs

bytesReadFromBlockCache

private final AtomicLong bytesReadFromBlockCache

blockReadOpsCount

private final AtomicLong blockReadOpsCount

Constructor Details

ParallelSeekHandler

public ParallelSeekHandler(KeyValueScanner scanner,
 ExtendedCell keyValue,
 long readPoint,
 CountDownLatch latch)

Method Details

process

public void process()

Description copied from class: EventHandler

This method is the main processing loop to be implemented by the various subclasses.

Specified by:

process in class EventHandler

getErr

public Throwable getErr()

setErr

public void setErr(Throwable err)