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

["Jungtaek Lim (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/STORM-1832?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15309898#comment-15309898 ] 

Jungtaek Lim commented on STORM-1832:
-------------------------------------

[~BaconSeason]
Sorry for the delay. You can see the capacity of metric consumer bolt and determine that is root of the issue or not.
When we address queue metrics on UI you can easily see that symptom.

> 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



--
This message was sent by Atlassian JIRA
(v6.3.4#6332)