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https://issues.apache.org/jira/browse/TEZ-746?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jonathan Eagles resolved TEZ-746.
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Resolution: Duplicate
> DAG and Vertex commit should ensure that all tasks have completed before
> committing
> -----------------------------------------------------------------------------------
>
> Key: TEZ-746
> URL: https://issues.apache.org/jira/browse/TEZ-746
> Project: Apache Tez
> Issue Type: Improvement
> Reporter: Bikas Saha
> Assignee: Bikas Saha
> Priority: Major
>
> There may be a race when a task (say a speculative task) is still running.
> Then the committer commits (say lists & cleans some files in the output dir).
> Then that task writes some temporary files in the output dir and gets killed.
> Those temp files may remain behind.
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