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https://issues.apache.org/jira/browse/HIVE-10816?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14579865#comment-14579865
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Rui Li commented on HIVE-10816:
-------------------------------
Thanks [~leftylev] and [~xuefuz] for catching this. I didn't realize master is
on 2.0.0 now.
Committed to branch-1 as well.
> 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
> Assignee: Rui Li
> Fix For: 1.3.0
>
> Attachments: HIVE-10816.1.patch, HIVE-10816.1.patch
>
>
> 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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