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https://issues.apache.org/jira/browse/HIVE-16655?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Siddharth Seth updated HIVE-16655:
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Attachment: HIVE-16655.01.patch
The patch.
Relies on the start notifications from Tez, to detemine the state of a
fragment, and preempt accordingly.
cc [~prasanth_j], [~sershe] for review.
Cannot submit to jenkins since the Tez patch introduces new APIs.
> LLAP: Avoid preempting fragments before they enter the running state
> --------------------------------------------------------------------
>
> Key: HIVE-16655
> URL: https://issues.apache.org/jira/browse/HIVE-16655
> Project: Hive
> Issue Type: Bug
> Reporter: Siddharth Seth
> Assignee: Siddharth Seth
> Attachments: HIVE-16655.01.patch
>
>
> Currently in the AM, fragments may be preempted as soon as they are
> allocated, without knowing whether they will move into the RUNNING state or
> not. Leads to a lot of unnecessary kills.
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