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Posted to issues@hbase.apache.org by "Andrew Purtell (JIRA)" <ji...@apache.org> on 2017/07/12 00:50:00 UTC

[jira] [Assigned] (HBASE-18330) NPE in ReplicationZKLockCleanerChore

     [ https://issues.apache.org/jira/browse/HBASE-18330?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Andrew Purtell reassigned HBASE-18330:
--------------------------------------

         Assignee: Andrew Purtell
         Priority: Major  (was: Minor)
    Fix Version/s: 1.2.7
                   1.5.0
                   1.3.2
                   1.4.0
      Component/s: Replication
                   master

> NPE in ReplicationZKLockCleanerChore
> ------------------------------------
>
>                 Key: HBASE-18330
>                 URL: https://issues.apache.org/jira/browse/HBASE-18330
>             Project: HBase
>          Issue Type: Bug
>          Components: master, Replication
>    Affects Versions: 1.2.5
>            Reporter: Minwoo Kang
>            Assignee: Andrew Purtell
>             Fix For: 1.4.0, 1.3.2, 1.5.0, 1.2.7
>
>
> While I am watching HMaster log, I found NullPointerException Logs.
> This occurs every minute.
> --------
> 2017-07-06 09:05:02,579 DEBUG [,1498445640728_ChoreService_1] cleaner.CleanerChore: Removing: hdfs://*** from archive
> 2017-07-06 09:05:02,585 ERROR [,1498445640728_ChoreService_2] hbase.ScheduledChore: Caught error
> java.lang.NullPointerException
>         at org.apache.hadoop.hbase.master.cleaner.ReplicationZKLockCleanerChore.chore(ReplicationZKLockCleanerChore.java:80)
>         at org.apache.hadoop.hbase.ScheduledChore.run(ScheduledChore.java:185)
>         at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
>         at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:304)
>         at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:178)
>         at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293)
>         at org.apache.hadoop.hbase.JitterScheduledThreadPoolExecutorImpl$JitteredRunnableScheduledFuture.run(JitterScheduledThreadPoolExecutorImpl.java:110)
>         at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
>         at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
>         at java.lang.Thread.run(Thread.java:745)
> 2017-07-06 09:05:02,585 DEBUG [,1498445640728_ChoreService_1] cleaner.CleanerChore: Removing: hdfs://*** from archive
> 2017-07-06 09:05:02,586 DEBUG [,1498445640728_ChoreService_1] cleaner.CleanerChore: Removing: hdfs://*** from archive
> --------
> Here is related code:
>       List<String> replicators = queues.getListOfReplicators();
>       for (String replicator: replicators) {



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