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From "Rui Li (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-18148) NPE in SparkDynamicPartitionPruningResolver
Date Tue, 12 Dec 2017 07:11:00 GMT

    [ https://issues.apache.org/jira/browse/HIVE-18148?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16287210#comment-16287210
] 

Rui Li commented on HIVE-18148:
-------------------------------

Upload a patch to demonstrate the idea: only the upper most DPP is kept.
[~kellyzly], the patch contains a new test. If you run it w/o the fix, it should fail.

> NPE in SparkDynamicPartitionPruningResolver
> -------------------------------------------
>
>                 Key: HIVE-18148
>                 URL: https://issues.apache.org/jira/browse/HIVE-18148
>             Project: Hive
>          Issue Type: Bug
>          Components: Spark
>            Reporter: Rui Li
>            Assignee: Rui Li
>         Attachments: HIVE-18148.1.patch
>
>
> The stack trace is:
> {noformat}
> 2017-11-27T10:32:38,752 ERROR [e6c8aab5-ddd2-461d-b185-a7597c3e7519 main] ql.Driver:
FAILED: NullPointerException null
> java.lang.NullPointerException
>         at org.apache.hadoop.hive.ql.optimizer.physical.SparkDynamicPartitionPruningResolver$SparkDynamicPartitionPruningDispatcher.dispatch(SparkDynamicPartitionPruningResolver.java:100)
>         at org.apache.hadoop.hive.ql.lib.TaskGraphWalker.dispatch(TaskGraphWalker.java:111)
>         at org.apache.hadoop.hive.ql.lib.TaskGraphWalker.walk(TaskGraphWalker.java:180)
>         at org.apache.hadoop.hive.ql.lib.TaskGraphWalker.startWalking(TaskGraphWalker.java:125)
>         at org.apache.hadoop.hive.ql.optimizer.physical.SparkDynamicPartitionPruningResolver.resolve(SparkDynamicPartitionPruningResolver.java:74)
>         at org.apache.hadoop.hive.ql.parse.spark.SparkCompiler.optimizeTaskPlan(SparkCompiler.java:568)
> {noformat}
> At this stage, there shouldn't be a DPP sink whose target map work is null. The root
cause seems to be a malformed operator tree generated by SplitOpTreeForDPP.



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