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Posted to dev@storm.apache.org by "Jungtaek Lim (JIRA)" <ji...@apache.org> on 2016/05/13 06:48:12 UTC

[jira] [Created] (STORM-1832) Consistently slow metrics consumer triggers backpressure which will be never back to normal

Jungtaek Lim created STORM-1832:
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             Summary: Consistently slow metrics consumer triggers backpressure which will be never back to normal
                 Key: STORM-1832
                 URL: https://issues.apache.org/jira/browse/STORM-1832
             Project: Apache Storm
          Issue Type: Bug
          Components: storm-core
    Affects Versions: 1.0.0, 2.0.0, 1.0.1
            Reporter: Jungtaek Lim
            Assignee: Jungtaek Lim
            Priority: Critical


If metrics consumer is too slow to keep up processing received messages, eventually backpressure is triggered. Spout throttles, but metrics messages are not throttled so it could be chance for topology to be never back to normal.

While STORM-1698 can resolve this issue, I made this issue to clarify this behavior and mark this as 'bug'.

If you'd like to see its symptom, please refer here: https://github.com/apache/storm/pull/1324#issuecomment-218962460



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