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Posted to issues@beam.apache.org by "Kenneth Knowles (Jira)" <ji...@apache.org> on 2021/05/05 23:16:00 UTC
[jira] [Commented] (BEAM-12292) 2.29.0 cherrypick:
WindmillStateCache has a 0% hit rate in 2.29
[ https://issues.apache.org/jira/browse/BEAM-12292?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17339930#comment-17339930 ]
Kenneth Knowles commented on BEAM-12292:
----------------------------------------
I have cherrypicked this internal as part of the Dataflow release. We should also get it on the {{release-2.29.0}} branch as part of repo hygiene, so that the {{2.29}} series has it in the future without a cherrypick. (not that likely to have another release, but CP is easy)
> 2.29.0 cherrypick: WindmillStateCache has a 0% hit rate in 2.29
> ---------------------------------------------------------------
>
> Key: BEAM-12292
> URL: https://issues.apache.org/jira/browse/BEAM-12292
> Project: Beam
> Issue Type: Bug
> Components: runner-dataflow
> Reporter: Steve Niemitz
> Assignee: Sam Whittle
> Priority: P1
> Fix For: 2.29.0
>
>
> After upgrading to 2.29, I noticed that our jobs have a 0% state cache hit rate. I see a very high eviction rate from the cache as well (it used to be ~0, now its ~100,000+ evictions / second).
> We never were on 2.28, so I can't say if it worked there, but it did work on 2.27.
>
>
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