Github user abhishekagarwal87 commented on the pull request:
https://github.com/apache/storm/pull/1406#issuecomment-218076239
Two parts of this PR -
*Metric collection* - From what I have seen, storm users are very much
interested in queue length statistics. Current queue metrics do not have
histogram or average of queue length etc. There must be a way to add them
without touching the critical path.
*Metric reporting* - Reporting additional metrics to UI adds zookeeper
overhead but additional payload is not significant. Other alternative is to let
users rely on external components such as graphite by using appropriate
MetricConsumer.
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