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From Kang Minwoo <minwoo.k...@outlook.com>
Subject RE: NPE in ReplicationZKLockCleanerChore
Date Fri, 07 Jul 2017 03:59:20 GMT
Okay, Thanks for your reply.

Best regards,
Minwoo Kang

________________________________________
보낸 사람: Ted Yu <yuzhihong@gmail.com>
보낸 날짜: 2017년 7월 7일 금요일 오전 9:24:21
받는 사람: user@hbase.apache.org
제목: Re: NPE in ReplicationZKLockCleanerChore

Here is related code:
      List<String> replicators = queues.getListOfReplicators();

      for (String replicator: replicators) {

replicators seems to be null.

Can you log a JIRA (and attach redacted log if possible) ?

Cheers

On Thu, Jul 6, 2017 at 5:10 PM, Kang Minwoo <minwoo.kang@outlook.com> wrote:

> I am using 1.2.5 (revision=d7b05f79dee10e0ada614765bb354b93d615a157)
>
> Yes, I see NPE repeatedly.
> This occurs every minute.
>
> Should I fix it?
>
> Best regards,
> Minwoo Kang
>
> ________________________________________
> 보낸 사람: Kang Minwoo <minwoo.kang@outlook.com>
> 보낸 날짜: 2017년 7월 6일 목요일 오전 9:29:35
> 받는 사람: user@hbase.apache.org
> 제목: NPE in ReplicationZKLockCleanerChore
>
> Hello, HBase Users.
>
> While I am watching HMaster log, I found NullPointerException Logs.
>
> --------
>
> 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(JitterScheduledThreadPoolExecu
> torImpl.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
>
> --------
>
> I wonder what side effects this error gives HBase.
>
> Best regards,
> Minwoo Kang
>
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