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https://issues.apache.org/jira/browse/HIVE-16142?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15901964#comment-15901964
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Pengcheng Xiong commented on HIVE-16142:
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[~jdere], i am sorry that I do not get it. This is the write path of RS's
output operator. And there is another one in Optimizer. We just need to prevent
the NPE in the read path, which is in the patch.
> ATSHook NPE via LLAP
> --------------------
>
> Key: HIVE-16142
> URL: https://issues.apache.org/jira/browse/HIVE-16142
> Project: Hive
> Issue Type: Bug
> Reporter: Pengcheng Xiong
> Assignee: Pengcheng Xiong
> Fix For: 2.2.0
>
> Attachments: HIVE-16142.01.patch
>
>
> Exceptions in the log of the form:
> 2017-03-06T15:42:30,046 WARN [ATS Logger 0]: hooks.ATSHook
> (ATSHook.java:run(318)) - Failed to submit to ATS for
> hive_20170306154227_f41bc7cb-1a2f-40f1-a85b-b2bc260a451a
> java.lang.NullPointerException
> at
> org.apache.hadoop.hive.ql.exec.ExplainTask.outputPlan(ExplainTask.java:608)
> ~[hive-exec-2.1.0.2.6.0.0-585.jar:2.1.0.2.6.0.0-585]
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