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  1. Kudu
  2. KUDU-1962

NPE and lost callback in Java client when master queue overflows

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Details

    • Bug
    • Status: Resolved
    • Blocker
    • Resolution: Fixed
    • 1.3.0
    • 1.3.1, 1.4.0
    • client
    • None

    Description

      An Impala user reported seeing the following stack trace in the frontend, followed by a query hanging in planning:

      	
      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)
      

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            tlipcon Todd Lipcon
            tlipcon Todd Lipcon
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              Updated:
              Resolved:

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