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https://issues.apache.org/jira/browse/HADOOP-4097?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12629356#action_12629356
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Zheng Shao commented on HADOOP-4097:
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+1
Looks good. Changes only affect src/contrib/hive.
> Hive interaction with speculative execution is broken
> -----------------------------------------------------
>
> Key: HADOOP-4097
> URL: https://issues.apache.org/jira/browse/HADOOP-4097
> Project: Hadoop Core
> Issue Type: Bug
> Components: contrib/hive
> Reporter: Joydeep Sen Sarma
> Assignee: Joydeep Sen Sarma
> Priority: Critical
> Attachments: hadoop-4097.1.patch
>
>
> Hive does not cleanup output files when tasks are killed. With speculative
> execution, partial result files may get left behind. The commit step of the
> results should detect and remove any partial output files.
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