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From "Dawid Wysakowicz (JIRA)" <j...@apache.org>
Subject [jira] [Comment Edited] (FLINK-7293) Support custom order by in PatternStream
Date Mon, 31 Jul 2017 07:05:00 GMT

    [ https://issues.apache.org/jira/browse/FLINK-7293?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16106882#comment-16106882
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Dawid Wysakowicz edited comment on FLINK-7293 at 7/31/17 7:04 AM:
------------------------------------------------------------------

I agree there is sort by time, but if the previous operator before CEP would sort both by
the time and custom order, the sorting in CEP would not have any impact.


was (Author: dawidwys):
I agree there is sort by time, but if the previous operator before CEP would sort both by
the time and custom order, the sorting in CEP would not have any impact.

You could even reuse the code from DataStreamSort.

> 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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