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https://issues.apache.org/jira/browse/FLINK-4902?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17336843#comment-17336843
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Flink Jira Bot commented on FLINK-4902:
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This issue was labeled "stale-major" 7 ago and has not received any updates so
it is being deprioritized. If this ticket is actually Major, please raise the
priority and ask a committer to assign you the issue or revive the public
discussion.
> Flink Task Chain not getting input in a distributed manner
> ----------------------------------------------------------
>
> Key: FLINK-4902
> URL: https://issues.apache.org/jira/browse/FLINK-4902
> Project: Flink
> Issue Type: Bug
> Components: API / DataSet
> Affects Versions: 1.1.0
> Environment: RHEL 6.6
> Reporter: Sajeev Ramakrishnan
> Priority: Major
> Labels: stale-major
>
> Dear Team,
> I have the following tasks chained as a single subtask.
> left outer join -> filter -> map -> flatMap.
> The input to this would be two streams
> memberPlan - 22 million
> groupPlan - 1 million.
> I am running the entire job with parallelism 16. Before this task chain, I am
> doing two left outer joins.
> The problem is that one slot is getting 22 plus million (includes some from
> groupPlan) and rest 15 slots are getting the input from groupPlan.
> This is making the entire execution very slow, probably 4 hours slower.
> Can you please throw some light on this.
> Regards,
> Sajeev
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