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https://issues.apache.org/jira/browse/FLINK-13707?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16908043#comment-16908043
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xuekang commented on FLINK-13707:
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[~StephanEwen] yes, we provide a realtime computing platform for the whole
company. The users do not have to know very much about the meaning of max
parallelism if we set it as a default value.
> Make max parallelism configurable
> ----------------------------------
>
> Key: FLINK-13707
> URL: https://issues.apache.org/jira/browse/FLINK-13707
> Project: Flink
> Issue Type: New Feature
> Components: API / DataStream
> Reporter: xuekang
> Priority: Minor
>
> For now, if a user set parallelism larger than 128, and does not set max
> parallelism explicitly, the system will compute a max parallelism, which is
> 1.5 * parallelism. When the job changes the parallelism and recover from a
> savepoint, there may be some problem when restoring states from the
> savepoint, as the number of key groups changed.
> To avoid this problem, and trying not to modify the code of existing jobs,
> we want to configure the default max parallelism in flink-conf.yaml, but it
> is not configurable now.
> Should we make it configurable? Any comments would be appreciated.
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