Package org.apache.hadoop.hbase.chaos.actions

Class UnbalanceRegionsAction

java.lang.Object

org.apache.hadoop.hbase.chaos.actions.Action

org.apache.hadoop.hbase.chaos.actions.UnbalanceRegionsAction

public class UnbalanceRegionsAction
extends Action

Action that tries to unbalance the regions of a cluster.

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.hadoop.hbase.chaos.actions.Action

Action.ActionContext

Field Summary

Fields

Modifier and Type	Field	Description
private final double	fractionOfRegions
private final double	fractionOfServers
private static final org.slf4j.Logger	LOG

Fields inherited from class org.apache.hadoop.hbase.chaos.actions.Action

cluster, context, initialServers, initialStatus, KILL_DATANODE_TIMEOUT_DEFAULT, KILL_DATANODE_TIMEOUT_KEY, KILL_MASTER_TIMEOUT_DEFAULT, KILL_MASTER_TIMEOUT_KEY, KILL_NAMENODE_TIMEOUT_DEFAULT, KILL_NAMENODE_TIMEOUT_KEY, KILL_RS_TIMEOUT_DEFAULT, KILL_RS_TIMEOUT_KEY, KILL_ZK_NODE_TIMEOUT_DEFAULT, KILL_ZK_NODE_TIMEOUT_KEY, killDataNodeTimeout, killMasterTimeout, killNameNodeTimeout, killRsTimeout, killZkNodeTimeout, monkeyProps, skipMetaRS, START_DATANODE_TIMEOUT_DEFAULT, START_DATANODE_TIMEOUT_KEY, START_MASTER_TIMEOUT_DEFAULT, START_MASTER_TIMEOUT_KEY, START_NAMENODE_TIMEOUT_DEFAULT, START_NAMENODE_TIMEOUT_KEY, START_RS_TIMEOUT_DEFAULT, START_RS_TIMEOUT_KEY, START_ZK_NODE_TIMEOUT_DEFAULT, START_ZK_NODE_TIMEOUT_KEY, startDataNodeTimeout, startMasterTimeout, startNameNodeTimeout, startRsTimeout, startZkNodeTimeout

Constructor Summary

Constructors

Constructor	Description
UnbalanceRegionsAction(double fractionOfRegions, double fractionOfServers)	Unbalances the regions on the cluster by choosing "target" servers, and moving some regions from each of the non-target servers to random target servers.

Method Summary

Modifier and Type	Method	Description
protected org.slf4j.Logger	getLogger()	Retrieve the instance's Logger, for use throughout the class hierarchy.
void	perform()

Methods inherited from class org.apache.hadoop.hbase.chaos.actions.Action

forceBalancer, getConf, getCurrentServers, init, killDataNode, killJournalNode, killMaster, killNameNode, killRs, killZKNode, modifyAllTableColumns, modifyAllTableColumns, resumeRs, setBalancer, startDataNode, startJournalNode, startMaster, startNameNode, startRs, startZKNode, stopRs, suspendRs, unbalanceRegions

Methods inherited from class java.lang.Object

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

Field Details

LOG

private static final org.slf4j.Logger LOG

fractionOfRegions

private final double fractionOfRegions

fractionOfServers

private final double fractionOfServers

Constructor Details

UnbalanceRegionsAction

public UnbalanceRegionsAction(double fractionOfRegions,
 double fractionOfServers)

Unbalances the regions on the cluster by choosing "target" servers, and moving some regions from each of the non-target servers to random target servers.

Parameters:

fractionOfRegions - Fraction of regions to move from each server.

fractionOfServers - Fraction of servers to be chosen as targets.

Method Details

getLogger

protected org.slf4j.Logger getLogger()

Description copied from class: Action

Retrieve the instance's Logger, for use throughout the class hierarchy.

Specified by:

getLogger in class Action

perform

public void perform()
             throws Exception

Overrides:

perform in class Action

Throws:

Exception