[jira] [Created] (HBASE-26712) Balancer encounters NPE in rare case

["Viraj Jasani (Jira)" <ji...@apache.org>]

Viraj Jasani created HBASE-26712:
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             Summary: Balancer encounters NPE in rare case
                 Key: HBASE-26712
                 URL: https://issues.apache.org/jira/browse/HBASE-26712
             Project: HBase
          Issue Type: Bug
    Affects Versions: 2.4.9
            Reporter: Viraj Jasani


 
{code:java}
ERROR [ster-1:60000.Chore.1] hbase.ScheduledChore - Caught error
java.lang.NullPointerException
    at org.apache.hadoop.hbase.master.assignment.AssignmentManager.balance(AssignmentManager.java:758)
    at org.apache.hadoop.hbase.master.HMaster.executeRegionPlansWithThrottling(HMaster.java:1834)
    at org.apache.hadoop.hbase.master.HMaster.balance(HMaster.java:1797)
    at org.apache.hadoop.hbase.master.HMaster.balance(HMaster.java:1707)
    at org.apache.hadoop.hbase.master.balancer.BalancerChore.chore(BalancerChore.java:49)
    at org.apache.hadoop.hbase.ScheduledChore.run(ScheduledChore.java:153)
    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$JitteredRunnableScheduledFuture.run(JitterScheduledThreadPoolExecutorImpl.java:111)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
    at java.lang.Thread.run(Thread.java:748)
 {code}
Let's fix this.



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