[jira] [Created] (STORM-141) Provide support for custom stats in Storm UI

["James Xu (JIRA)" <ji...@apache.org>]

James Xu created STORM-141:
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             Summary: Provide support for custom stats in Storm UI
                 Key: STORM-141
                 URL: https://issues.apache.org/jira/browse/STORM-141
             Project: Apache Storm (Incubating)
          Issue Type: New Feature
            Reporter: James Xu
            Priority: Minor


https://github.com/nathanmarz/storm/issues/27

Something along the lines of Hadoop counters

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gsilk: Would this be implemented as an implicit stream? It would be great to have global and per-task aggregations in addition to having per-bolt counters.

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nathanmarz: gsilk: Well, besides the aggregation mechanism we need to figure out how the stats are sent back to nimbus, stored, etc. Not sure the current approach of putting the stats in ZK is a good one. Using implicit streams and an aggregation bolt to sum things together, and then having the aggregation bolt connect to nimbus and send updates might be a better design.

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ehudl: how about using emit to a specific stream (not default) as a counter, do you think this is a good approach ? 
could this approach cause a memory leak? if no one is listening to this stream or in case you use a large amount of streams?



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