[
https://issues.apache.org/jira/browse/BEAM-11727?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Sam Whittle reassigned BEAM-11727:
----------------------------------
Assignee: Sam Whittle
> Optimize ExecutionStateTracker
> ------------------------------
>
> Key: BEAM-11727
> URL: https://issues.apache.org/jira/browse/BEAM-11727
> Project: Beam
> Issue Type: Bug
> Components: runner-dataflow
> Reporter: Sam Whittle
> Assignee: Sam Whittle
> Priority: P2
>
> Showed up as 1.5% of CPU on Nexmark 11 streaming benchmark run.
> It appears to be using a ConcurrentSkipListSet and most of the cpu is
> relatedd to inserts/removes in that, involving the system hash of the entries
> as that is used for ordering.
> The consistent ordering is unnecessary. Additionally for other reasons,
> removal and iteration is already synchronized and so performance will likely
> be better just using a synchronized HashMap and synchronizing in the add case.
--
This message was sent by Atlassian Jira
(v8.3.4#803005)
