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https://issues.apache.org/jira/browse/BEAM-6956?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16807065#comment-16807065
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Jiayi Zhao commented on BEAM-6956:
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it might due to some random stuff, I tried in thread flink again with 100
worker_threads, and this time it works(I also changed --parallelism=1 instead
of --parallelism=2 before, not sure if it's related),
when I tried separate local flink cluster, each time pipeline stuck at
different places, I will try confirm it and put more information about where it
stucks
> --experiments=worker_threads=100 issue
> --------------------------------------
>
> Key: BEAM-6956
> URL: https://issues.apache.org/jira/browse/BEAM-6956
> Project: Beam
> Issue Type: New Feature
> Components: runner-flink
> Reporter: Jiayi Zhao
> Priority: Major
>
> I noticed that without this "–experiments=worker_threads=100", pipeline will
> stuck,
> The weird thing is, I tried some complex pipeline using the in thread flink
> method (./gradlew :beam-runners-flink_2.11-job-server:runShadow)
> "–experiments=worker_threads=100" doesn't work, but
> "–experiments=worker_threads=1000" works fine
> Then I tried the same pipeline using the separate local flink cluster
> (./gradlew :beam-runners-flink_2.11-job-server:runShadow
> -PflinkMasterUrl=localhost:8081), flink version is 1.5.6 (other version
> doesn't work, see BEAM-6915)
> Neither did "–experiments=worker_threads=1000" or
> "–experiments=worker_threads=10000" work, pipeline stuck at certain stage
> (shows running in flink UI but won't finish forever)
> any real fix to that? Thanks!
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