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https://issues.apache.org/jira/browse/FLINK-1967?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14627787#comment-14627787
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ASF GitHub Bot commented on FLINK-1967:
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Github user gyfora commented on the pull request:
https://github.com/apache/flink/pull/906#issuecomment-121548970
If we can still have the records without timestamps that would be good. But
this should be automatic.
Regarding monitoring, this seems to be an overkill for that purpose. We
could "sample" the stream and attach timestamps there and that wouldn't be a
large overhead.
> 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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