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https://issues.apache.org/jira/browse/HIVE-24116?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Rajesh Balamohan updated HIVE-24116:
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Description:
In certain DAGs, tasks get preempted as higher priority tasks need to be
executed. These preempted tasks are scheduled to run later, but they end up
missing locality information. Ref: HIVE-24061
Remote storage reads can be avoided, if an opportunity is provided for these
preempted to get better locality in next iteration.
was:
In certain DAGs, tasks get preempted as higher priority tasks need to be
executed. These preempted tasks are scheduled to run later, but they end up
missing locality information. Ref: HIVE-24061
Remote stoarge reads can be avoided, if an opportunity is provided for these
preempted to get better locality in next iteration.
> LLAP: Provide an opportunity for preempted tasks to get better locality in
> next iteration
> -----------------------------------------------------------------------------------------
>
> Key: HIVE-24116
> URL: https://issues.apache.org/jira/browse/HIVE-24116
> Project: Hive
> Issue Type: Improvement
> Components: llap
> Reporter: Rajesh Balamohan
> Assignee: Rajesh Balamohan
> Priority: Minor
>
> In certain DAGs, tasks get preempted as higher priority tasks need to be
> executed. These preempted tasks are scheduled to run later, but they end up
> missing locality information. Ref: HIVE-24061
> Remote storage reads can be avoided, if an opportunity is provided for these
> preempted to get better locality in next iteration.
>
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