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https://issues.apache.org/jira/browse/BEAM-12127?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Kenneth Knowles updated BEAM-12127:
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Status: Open (was: Triage Needed)
> Reduce counter overhead in PCollectionConsumerRegistry.accept
> -------------------------------------------------------------
>
> Key: BEAM-12127
> URL: https://issues.apache.org/jira/browse/BEAM-12127
> Project: Beam
> Issue Type: Bug
> Components: java-fn-execution
> Reporter: Sam Whittle
> Assignee: Sam Whittle
> Priority: P2
>
> DelegatingCounter.inc shows up as 21% of cpu on nexmark query 2 benchmark
> under PCollectionConsumerRegistry.accept
> 2% is actual counter incrementing, but the majority is the delegation of
> DelegatingCounter which involves looking up thread-local state and then
> getting the counter for the name from the counter container. However in this
> case the counter container is known and can just be bound when constructing
> the counter instaed of using DelegatingCounter.
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