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https://issues.apache.org/jira/browse/STORM-1731?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15260871#comment-15260871
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ASF GitHub Bot commented on STORM-1731:
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Github user roshannaik commented on the pull request:
https://github.com/apache/storm/pull/1362#issuecomment-215217692
@satishd i had seen a clojure blog where the author believed clojure maps
are very efficient (and even faster than the Java map) for read-only operations
.. but didnt provide any numbers substantiate it. IMO it does not appear to be
an accurate claim and Java HashMap would hold up much better (relatively) even
in critical paths.. those clojure lookups sometimes lead to reflection.
> Avoid looking up debug / backpressure enable flags within critical path
> -----------------------------------------------------------------------
>
> Key: STORM-1731
> URL: https://issues.apache.org/jira/browse/STORM-1731
> Project: Apache Storm
> Issue Type: Bug
> Components: storm-core
> Affects Versions: 1.0.0
> Reporter: Jungtaek Lim
> Assignee: Jungtaek Lim
> Priority: Critical
> Fix For: 0.10.1, 1.0.1
>
>
> While profiling the result of STORM-1729, I also found that there're many
> places in critical path which look up the value of flags which are not
> updated dynamically.
> ("get from map" is on top 5 from each spout / bolt thread.)
> This should be fixed.
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