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https://issues.apache.org/jira/browse/FLINK-7293?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16106872#comment-16106872
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Dawid Wysakowicz commented on FLINK-7293:
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My personal feeling is that it is not needed in the CEP library itself and for
me the described behaviour is unclear. If it is required by Table API, I would
implement it on the Table API side.The way it can be done is just first apply
that custom sort and after that pass it to the CEP library. This is the same
case as in DataStream, which does not have {{sort}} function.
> Support custom order by in PatternStream
> ----------------------------------------
>
> Key: FLINK-7293
> URL: https://issues.apache.org/jira/browse/FLINK-7293
> Project: Flink
> Issue Type: Sub-task
> Components: CEP
> Reporter: Dian Fu
> Assignee: Dian Fu
>
> Currently, when {{ProcessingTime}} is configured, the events are fed to NFA
> in the order of the arriving time and when {{EventTime}} is configured, the
> events are fed to NFA in the order of the event time. It should also allow
> custom {{order by}} to allow users to define the order of the events besides
> the above factors.
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