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https://issues.apache.org/jira/browse/TEZ-3336?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15373670#comment-15373670
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Hitesh Shah commented on TEZ-3336:
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\cc [~hagleitn]
> Hive map-side join job sometimes fails with ROOT_INPUT_INIT_FAILURE
> -------------------------------------------------------------------
>
> Key: TEZ-3336
> URL: https://issues.apache.org/jira/browse/TEZ-3336
> Project: Apache Tez
> Issue Type: Bug
> Affects Versions: 0.7.1
> Reporter: Jason Lowe
>
> When Hive does a map-side join it can generate a DAG where a vertex has two
> inputs, one from an upstream task and another using MRInputAMSplitGenerator.
> If it takes a while for MRInputAMSplitGenerator to compute the splits and one
> of the tasks for the other upstream vertex completes then the job can fail
> with an error since MRInputAMSplitGenerator does not expect to receive any
> events.
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