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Posted to dev@hive.apache.org by "Prasanth Jayachandran (JIRA)" <ji...@apache.org> on 2017/03/03 19:39:45 UTC

[jira] [Created] (HIVE-16103) LLAP: Scheduler timeout monitor never stops

Prasanth Jayachandran created HIVE-16103:
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             Summary: LLAP: Scheduler timeout monitor never stops
                 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


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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