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https://issues.apache.org/jira/browse/FLINK-2666?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14942683#comment-14942683
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ASF GitHub Bot commented on FLINK-2666:
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Github user aljoscha closed the pull request at:
https://github.com/apache/flink/pull/1201
> Allow custom Timestamp extractors for Flink sources
> ---------------------------------------------------
>
> Key: FLINK-2666
> URL: https://issues.apache.org/jira/browse/FLINK-2666
> Project: Flink
> Issue Type: Improvement
> Components: Streaming
> Reporter: Gyula Fora
> Assignee: Aljoscha Krettek
> Priority: Minor
>
> When record timestamps are turned on users currently have 2 ways of
> specifying record timestamps.
> They can either chose to automatically attach ingress timestamps (and send
> watermarks), or custom implement a sourcefunction to manually assign
> timestamps and emit watermarks.
> It would be good if users could define a Timestamp extractor function that
> will attach a timestamp for every record generated using any of the current
> Flink sources. Also watermarks for these records should be automatically
> generated based on the extracted event time (assuming monotonicity per
> source) periodically.
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