[jira] [Commented] (STORM-433) Give users visibility to the depth of queues at each bolt

["ASF GitHub Bot (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/STORM-433?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15309955#comment-15309955 ] 

ASF GitHub Bot commented on STORM-433:
--------------------------------------

Github user HeartSaVioR commented on the pull request:

    https://github.com/apache/storm/pull/1406
  
    @abhishekagarwal87 @knusbaum 
    Not at all. It shouldn't hurt much so let's apply this as it is. We can address broader considerations from another issues.
    One thing I'd like to see is the status of backpressure for each queue. We can show the percentage, or just show whether this queue meets condition to trigger backpressure or not.


> Give users visibility to the depth of queues at each bolt
> ---------------------------------------------------------
>
>                 Key: STORM-433
>                 URL: https://issues.apache.org/jira/browse/STORM-433
>             Project: Apache Storm
>          Issue Type: Wish
>          Components: storm-core
>            Reporter: Dane Hammer
>            Assignee: Abhishek Agarwal
>            Priority: Minor
>
> I envision being able to browse the Storm UI and see where queues of tuples are backing up.
> Today if I see latencies increasing at a bolt, it may not be due to anything specific to that bolt, but that it is backed up behind an overwhelmed bolt (which has too low of parallelism or too high of latency).
> I would expect this could use sampling like the metrics reported to the UI today, and just retrieve data from netty about the state of the queues. I wouldn't imagine supporting zeromq on the first pass.



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