Package org.apache.iotdb.confignode.manager.load.cache.region

Class RegionGroupCache

java.lang.Object

org.apache.iotdb.confignode.manager.load.cache.region.RegionGroupCache

public class RegionGroupCache
extends Object

RegionGroupCache caches the RegionHeartbeatSamples of all Regions in the same RegionGroup. Update and cache the current statistics of the RegionGroup based on the latest RegionHeartbeatSamples from all Regions it contains.

Constructor Summary

Constructors

Constructor	Description
RegionGroupCache(String database, Set<Integer> dataNodeIds, boolean isStrongConsistency)	Constructor for create RegionGroupCache with default RegionGroupStatistics.

Method Summary

Modifier and Type	Method	Description
void	cacheHeartbeatSample(int dataNodeId, RegionHeartbeatSample newHeartbeatSample)
void	cacheHeartbeatSample(int dataNodeId, RegionHeartbeatSample newHeartbeatSample, boolean overwrite)	Cache the newest RegionHeartbeatSample.
void	createRegionCache(int dataNodeId)	Create the cache of the specified Region.
RegionGroupStatistics	getCurrentStatistics()
String	getDatabase()
RegionCache	getRegionCache(int nodeId)
Set<Integer>	getRegionLocations()
void	removeRegionCache(int dataNodeId)	Remove the cache of the specified Region in the specified RegionGroup.
void	updateCurrentStatistics()	Update currentStatistics based on the latest NodeHeartbeatSamples that cached in the slidingWindow.

Methods inherited from class java.lang.Object

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

Constructor Details

RegionGroupCache

public RegionGroupCache(String database,
 Set<Integer> dataNodeIds,
 boolean isStrongConsistency)

Constructor for create RegionGroupCache with default RegionGroupStatistics.

Method Details

cacheHeartbeatSample

public void cacheHeartbeatSample(int dataNodeId,
 RegionHeartbeatSample newHeartbeatSample,
 boolean overwrite)

Cache the newest RegionHeartbeatSample.

Parameters:

dataNodeId - Where the specified Region resides

newHeartbeatSample - The newest RegionHeartbeatSample

overwrite - Able to overwrite Adding or Removing

cacheHeartbeatSample

public void cacheHeartbeatSample(int dataNodeId,
 RegionHeartbeatSample newHeartbeatSample)

createRegionCache

public void createRegionCache(int dataNodeId)

Create the cache of the specified Region.

Parameters:

dataNodeId - the specified DataNode

removeRegionCache

public void removeRegionCache(int dataNodeId)

Remove the cache of the specified Region in the specified RegionGroup.

Parameters:

dataNodeId - the specified DataNode

updateCurrentStatistics

public void updateCurrentStatistics()

Update currentStatistics based on the latest NodeHeartbeatSamples that cached in the slidingWindow.

getCurrentStatistics

public RegionGroupStatistics getCurrentStatistics()

getDatabase

public String getDatabase()

getRegionLocations

public Set<Integer> getRegionLocations()

getRegionCache

public RegionCache getRegionCache(int nodeId)