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https://issues.apache.org/jira/browse/FLINK-27992?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Dawid Wysakowicz closed FLINK-27992.
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Resolution: Fixed
> cep StreamExecMatch need check the parallelism and maxParallelism of the two
> transformation in it
> -------------------------------------------------------------------------------------------------
>
> Key: FLINK-27992
> URL: https://issues.apache.org/jira/browse/FLINK-27992
> Project: Flink
> Issue Type: Bug
> Components: Library / CEP
> Affects Versions: 1.16.0
> Reporter: Jacky Lau
> Assignee: Dawid Wysakowicz
> Priority: Blocker
> Labels: pull-request-available
>
> StreamExecMatch node has two transformation (StreamRecordTimestampInserter ->
> Match), the upstream of StreamExecMatch is hash edge when use set different
> parallelism and maxParallelism it will cause problem.
> because the window operator using downstream node's max parallelism compute
> keygroup and cep operator using max parallelism of itself and it may not
> equal
> such as:
> window - --(hash edge)> StreamRecordTimestampInserter --(forward edge)–> Cep
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