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https://issues.apache.org/jira/browse/HIVE-14403?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15406180#comment-15406180
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Siddharth Seth commented on HIVE-14403:
---------------------------------------
Test failures are unrelated. Cannot reproduce
TestLlapTaskSchedulerService.testDelayedLocalityNodeCommErrorImmediateAllocation
on local runs. Will walk through the test in a separate jira to identify
flakiness.
> LLAP node specific preemption will only preempt once on a node per AM
> ---------------------------------------------------------------------
>
> Key: HIVE-14403
> URL: https://issues.apache.org/jira/browse/HIVE-14403
> Project: Hive
> Issue Type: Bug
> Reporter: Siddharth Seth
> Assignee: Siddharth Seth
> Priority: Critical
> Attachments: HIVE-14403.01.patch, HIVE-14403.02.patch
>
>
> Query hang reported by [~cartershanklin]
> Turns out that once an AM has preempted a task on a node for locality, it
> will not be able to preempt another task on the same node (specifically for
> local requests)
> Manifests as a query hanging. It's possible for a previous query to interfere
> with a subsequent query since the AM is shared.
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