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Posted to dev@flink.apache.org by "Robert Metzger (JIRA)" <ji...@apache.org> on 2016/08/10 14:49:20 UTC

[jira] [Created] (FLINK-4367) Offer separate API for watermark generation and timestamp extraction

Robert Metzger created FLINK-4367:
-------------------------------------

             Summary: Offer separate API for watermark generation and timestamp extraction
                 Key: FLINK-4367
                 URL: https://issues.apache.org/jira/browse/FLINK-4367
             Project: Flink
          Issue Type: Sub-task
          Components: DataStream API
    Affects Versions: 1.1.0
            Reporter: Robert Metzger
             Fix For: 2.0.0


Right now, the {{AssignerWithPunctuatedWatermarks}} and {{AssignerWithPeriodicWatermarks}} interfaces also require implementing a {{TimestampAssigner}}.

For cases where the source emits records with timestamps, its not necessary to extract timestamps again from the records, we just want to generate watermarks.



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