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https://issues.apache.org/jira/browse/HIVE-16103?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15895161#comment-15895161
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Prasanth Jayachandran commented on HIVE-16103:
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Tested this patch on a cluster and timeout monitor is being stopped correctly.
> LLAP: Scheduler timeout monitor never stops with slot nodes
> -----------------------------------------------------------
>
> Key: HIVE-16103
> URL: https://issues.apache.org/jira/browse/HIVE-16103
> Project: Hive
> Issue Type: Bug
> Components: llap
> Affects Versions: 2.2.0
> Reporter: Prasanth Jayachandran
> Assignee: Prasanth Jayachandran
> Attachments: HIVE-16103.1.patch
>
>
> The scheduler timeout monitor is started when node count becomes 0 and
> stopped when node count becomes 1. For node count, we were relying on the
> paths under llap namespace. With addition of slot znodes, every node creates
> 2 paths (worker and slot). As a result, the size of the instances cache will
> never be 1 (always multiple of 2) which leads to condition where timeout
> monitor is not stopped.
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