[jira] [Created] (HIVE-10816) NPE in ExecDriver::handleSampling when submitted via child JVM

["Rui Li (JIRA)" <ji...@apache.org>]

Rui Li created HIVE-10816:
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             Summary: NPE in ExecDriver::handleSampling when submitted via child JVM
                 Key: HIVE-10816
                 URL: https://issues.apache.org/jira/browse/HIVE-10816
             Project: Hive
          Issue Type: Bug
            Reporter: Rui Li


When {{hive.exec.submitviachild = true}}, parallel order by fails with NPE and falls back to single-reducer mode. Stack trace:
{noformat}
2015-05-25 08:41:04,446 ERROR [main]: mr.ExecDriver (ExecDriver.java:execute(386)) - Sampling error
java.lang.NullPointerException
        at org.apache.hadoop.hive.ql.exec.mr.ExecDriver.handleSampling(ExecDriver.java:513)
        at org.apache.hadoop.hive.ql.exec.mr.ExecDriver.execute(ExecDriver.java:379)
        at org.apache.hadoop.hive.ql.exec.mr.ExecDriver.main(ExecDriver.java:750)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:497)
        at org.apache.hadoop.util.RunJar.run(RunJar.java:221)
        at org.apache.hadoop.util.RunJar.main(RunJar.java:136)
{noformat}



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