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https://issues.apache.org/jira/browse/HBASE-19263?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16253292#comment-16253292
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Ted Yu commented on HBASE-19263:
--------------------------------
bq. master can not resign any region
You meant 'cannot assign', I think.
Do you want to attach a patch ?
> Hbase BaseLoadBalancer
> ----------------------
>
> Key: HBASE-19263
> URL: https://issues.apache.org/jira/browse/HBASE-19263
> Project: HBase
> Issue Type: Bug
> Affects Versions: 1.2.6
> Environment: hbase 1.2.6
> Reporter: SuperbDong
>
> hbase master as a regionserver,BaseLoadBalancer throw Exception
> ArrayIndexOutOfBoundsException because of count of region is contain hbase
> master.However,hbase master can not resign any region except hbase-site.xml
> config.
> java.lang.ArrayIndexOutOfBoundsException: 2
> at
> org.apache.hadoop.hbase.master.balancer.BaseLoadBalancer$Cluster.getLocalityOfRegion(BaseLoadBalancer.java:843)
> at
> org.apache.hadoop.hbase.master.balancer.StochasticLoadBalancer$LocalityCostFunction.cost(StochasticLoadBalancer.java:1076)
> at
> org.apache.hadoop.hbase.master.balancer.StochasticLoadBalancer.computeCost(StochasticLoadBalancer.java:413)
> at
> org.apache.hadoop.hbase.master.balancer.StochasticLoadBalancer.balanceCluster(StochasticLoadBalancer.java:280)
> at org.apache.hadoop.hbase.master.HMaster.balance(HMaster.java:1341)
> at
> org.apache.hadoop.hbase.master.balancer.BalancerChore.chore(BalancerChore.java:48)
> at org.apache.hadoop.hbase.ScheduledChore.run(ScheduledChore.java:185)
> at
> java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
> at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308)
> at
> java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180)
> at
> java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)
> at
> org.apache.hadoop.hbase.JitterScheduledThreadPoolExecutorImpl$JitteredRunnableScheduledFuture.run(JitterScheduledThreadPoolExecutorImpl.java:110)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
> at java.lang.Thread.run(Thread.java:745)
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