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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (FLINK-1967) Introduce (Event)time in Streaming
Date Wed, 15 Jul 2015 17:56:05 GMT

    [ https://issues.apache.org/jira/browse/FLINK-1967?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14628455#comment-14628455
] 

ASF GitHub Bot commented on FLINK-1967:
---------------------------------------

Github user gyfora commented on the pull request:

    https://github.com/apache/flink/pull/906#issuecomment-121693041
  
    Thats great, thanks Aljoscha. Sorry for raising so many concerns. I just want to make
sure this change will be smooth :)


> Introduce (Event)time in Streaming
> ----------------------------------
>
>                 Key: FLINK-1967
>                 URL: https://issues.apache.org/jira/browse/FLINK-1967
>             Project: Flink
>          Issue Type: Improvement
>            Reporter: Aljoscha Krettek
>            Assignee: Aljoscha Krettek
>
> This requires introducing a timestamp in streaming record and a change in the sources
to add timestamps to records. This will also introduce punctuations (or low watermarks) to
allow windows to work correctly on unordered, timestamped input data. In the process of this,
the windowing subsystem also needs to be adapted to use the punctuations. Furthermore, all
operators need to be made aware of punctuations and correctly forward them. Then, a new operator
must be introduced to to allow modification of timestamps.



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