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https://issues.apache.org/jira/browse/HIVE-23746?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Work on HIVE-23746 started by Mustafa Iman.
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> Send task attempts async from AM to daemons
> -------------------------------------------
>
> Key: HIVE-23746
> URL: https://issues.apache.org/jira/browse/HIVE-23746
> Project: Hive
> Issue Type: Sub-task
> Components: llap
> Reporter: Mustafa Iman
> Assignee: Mustafa Iman
> Priority: Major
>
> LlapTaskCommunicator uses sync client to send task attempts. There are fixed
> number of communication threads (10 by default). This causes unneccessary
> delays when there are enough free execution slots in daemons but they do not
> receive all the tasks because of this bottleneck. LlapTaskCommunicator can
> use an async client to pass these tasks to daemons.
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