[jira] [Commented] (STORM-324) Require notes on internal of storm

["Andrew Montalenti (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/STORM-324?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14107992#comment-14107992 ] 

Andrew Montalenti commented on STORM-324:
-----------------------------------------

I actually wrote a blog post about this very topic which is going to be published soon on the Parse.ly blog. It's about Debugging Storm Topologies. I am glad to take on this issue and include relevant information in Storm's documentation.

> Require notes on internal of storm
> ----------------------------------
>
>                 Key: STORM-324
>                 URL: https://issues.apache.org/jira/browse/STORM-324
>             Project: Apache Storm (Incubating)
>          Issue Type: Documentation
>    Affects Versions: 0.9.1-incubating
>            Reporter: Srinath
>            Priority: Minor
>              Labels: documentation
>
> Require information about the internals of __tick and __metrics_tick.
> The only information about __tick tuples was from 0.8 release notes.
> This is more from a troubleshooting perspective since these tuples are generated by the system so frequently (can be seen when topology.debug is true)
> The kind of information that would help:
> 1. The mechanism of collecting metrics from each executor, spout or bolt
> 2. Looking at the tuple from debug logs, how to figure out which bolt these are intended to?
> 2. How does a bolt/spout/executor respond to it?
> etc.



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