org.apache.hadoop.hbase.master.normalizer

Class RegionNormalizerManager

java.lang.Object

org.apache.hadoop.hbase.master.normalizer.RegionNormalizerManager

All Implemented Interfaces:

ConfigurationObserver, PropagatingConfigurationObserver

@InterfaceAudience.Private
public class RegionNormalizerManager
extends Object
implements PropagatingConfigurationObserver

This class encapsulates the details of the RegionNormalizer subsystem.

Method Summary

Modifier and Type	Method and Description
void	deregisterChildren(ConfigurationManager manager)
long	getMergePlanCount() Return the number of times a MergeNormalizationPlan has been submitted.
ScheduledChore	getRegionNormalizerChore()
long	getSkippedCount(NormalizationPlan.PlanType type) Retrieve a count of the number of times plans of type type were submitted but skipped.
long	getSplitPlanCount() Return the number of times a SplitNormalizationPlan has been submitted.
boolean	isNormalizerOn() Return true if region normalizer is on, false otherwise
boolean	normalizeRegions(List<TableName> tables, boolean isHighPriority) Submit tables for normalization.
void	onConfigurationChange(org.apache.hadoop.conf.Configuration conf)
void	planSkipped(NormalizationPlan.PlanType type) Call-back for the case where plan couldn't be executed due to constraint violation, such as namespace quota.
void	registerChildren(ConfigurationManager manager)
void	setNormalizerOn(boolean normalizerOn) Set region normalizer on/off
void	start()
void	stop()

Methods inherited from class java.lang.Object

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

Method Detail

registerChildren

public void registerChildren(ConfigurationManager manager)

Specified by:

registerChildren in interface PropagatingConfigurationObserver

deregisterChildren

public void deregisterChildren(ConfigurationManager manager)

Specified by:

deregisterChildren in interface PropagatingConfigurationObserver

onConfigurationChange

public void onConfigurationChange(org.apache.hadoop.conf.Configuration conf)

Specified by:

onConfigurationChange in interface ConfigurationObserver

start

public void start()

stop

public void stop()

getRegionNormalizerChore

public ScheduledChore getRegionNormalizerChore()

isNormalizerOn

public boolean isNormalizerOn()

Return true if region normalizer is on, false otherwise

setNormalizerOn

public void setNormalizerOn(boolean normalizerOn)
                     throws IOException

Set region normalizer on/off

Parameters:

normalizerOn - whether normalizer should be on or off

Throws:

IOException

planSkipped

public void planSkipped(NormalizationPlan.PlanType type)

Call-back for the case where plan couldn't be executed due to constraint violation, such as namespace quota.

Parameters:

type - type of plan that was skipped.

getSkippedCount

public long getSkippedCount(NormalizationPlan.PlanType type)

Retrieve a count of the number of times plans of type type were submitted but skipped.

Parameters:

type - type of plan for which skipped count is to be returned

getSplitPlanCount

public long getSplitPlanCount()

Return the number of times a SplitNormalizationPlan has been submitted.

getMergePlanCount

public long getMergePlanCount()

Return the number of times a MergeNormalizationPlan has been submitted.

normalizeRegions

public boolean normalizeRegions(List<TableName> tables,
                                boolean isHighPriority)

Submit tables for normalization.

Parameters:

tables - a list of tables to submit.

isHighPriority - true when these requested tables should skip to the front of the queue.

Returns:

true when work was queued, false otherwise.