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https://issues.apache.org/jira/browse/STORM-1832?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15293338#comment-15293338
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Michael Schonfeld commented on STORM-1832:
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Lately, my topologies have gotten stuck on backpressure mode, even when all
components' capacity goes to (and stays at) 0... I'm wondering if this is
what's happening. How can I can test/verify that our metricsconsumer is the
issue?
> 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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