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https://issues.apache.org/jira/browse/FLINK-1967?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14627942#comment-14627942
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ASF GitHub Bot commented on FLINK-1967:
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Github user aljoscha commented on the pull request:
https://github.com/apache/flink/pull/906#issuecomment-121592265
I added numbers to my google sheet
(https://docs.google.com/spreadsheets/d/1mXcy25UOiZ4lEJOia1OM-K-U6np2bWv3x4q5nSnUMdg/edit?usp=sharing)
that show the performance with timestamps disabled in sources and the
StreamRecordSerializer. Now I'm running tests with larger payloads to see how
the impact of the timestamps diminished with growing element size.
> 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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