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https://issues.apache.org/jira/browse/KUDU-1962?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Todd Lipcon resolved KUDU-1962.
-------------------------------
Resolution: Fixed
Fix Version/s: 1.3.1
> NPE and lost callback in Java client when master queue overflows
> ----------------------------------------------------------------
>
> Key: KUDU-1962
> URL: https://issues.apache.org/jira/browse/KUDU-1962
> Project: Kudu
> Issue Type: Bug
> Components: client
> Affects Versions: 1.3.0
> Reporter: Todd Lipcon
> Assignee: Todd Lipcon
> Priority: Blocker
> Fix For: 1.3.1, 1.4.0
>
>
> An Impala user reported seeing the following stack trace in the frontend,
> followed by a query hanging in planning:
> {code}
>
> Mar 30, 2017 2:14:32 AM
> org.apache.kudu.client.shaded.org.jboss.netty.util.HashedWheelTimer
> WARNING: An exception was thrown by TimerTask.
> java.lang.NullPointerException
> at
> org.apache.kudu.client.AsyncKuduClient.sendRpcToTablet(AsyncKuduClient.java:737)
> at
> org.apache.kudu.client.AsyncKuduClient$2RetryTimer.run(AsyncKuduClient.java:1297)
> at
> org.apache.kudu.client.shaded.org.jboss.netty.util.HashedWheelTimer$HashedWheelTimeout.expire(HashedWheelTimer.java:556)
> at
> org.apache.kudu.client.shaded.org.jboss.netty.util.HashedWheelTimer$HashedWheelBucket.expireTimeouts(HashedWheelTimer.java:632)
> at
> org.apache.kudu.client.shaded.org.jboss.netty.util.HashedWheelTimer$Worker.run(HashedWheelTimer.java:369)
> at
> org.apache.kudu.client.shaded.org.jboss.netty.util.ThreadRenamingRunnable.run(ThreadRenamingRunnable.java:108)
> at java.lang.Thread.run(Thread.java:745)
> {code}
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