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Posted to issues@drill.apache.org by "Padma Penumarthy (JIRA)" <ji...@apache.org> on 2017/02/21 21:43:44 UTC

[jira] [Created] (DRILL-5287) Provide option to skip updates of ephemeral state changes in Zookeeper

Padma Penumarthy created DRILL-5287:
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             Summary: Provide option to skip updates of ephemeral state changes in Zookeeper
                 Key: DRILL-5287
                 URL: https://issues.apache.org/jira/browse/DRILL-5287
             Project: Apache Drill
          Issue Type: Bug
    Affects Versions: 1.9.0
            Reporter: Padma Penumarthy
            Assignee: Padma Penumarthy
             Fix For: 1.10


We put transient profiles in zookeeper and update state as query progresses and changes states. It is observed that this adds latency of ~45msec for each update in the query execution path. This gets even worse when high number of concurrent queries are in progress. For concurrency=100, the average query response time even for short queries  is 8 sec vs 0.2 sec with these updates disabled. For short lived queries in a high-throughput scenario, it is of no value to update state changes in zookeeper. We need an option to disable these updates for short running operational queries.



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