Uploaded image for project: 'Flink'
  1. Flink
  2. FLINK-3536

Make clearer distinction between event time and processing time

    XMLWordPrintableJSON

    Details

    • Type: Improvement
    • Status: Resolved
    • Priority: Minor
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: 1.0.0
    • Component/s: API / DataStream
    • Labels:
      None

      Description

      If you define your own windows it is easy to mix up the time characteristic with the wrong set of predefined WindowAssigners. You cannot use processing time with a TumblingTimeWindows window assigner, for example.

      Neither from the name of TumblingTimeWindows nor from the JavaDocs it is clearly obvious that this WindowAssigner can only be used with event time. I think it would be better to rename the event time window assigner to something like TumblingEventTimeWindows. Additionally, we could extend the JavaDocs a bit, since not everyone knows that "based on the timestamps" means based on event time.

        Attachments

          Activity

            People

            • Assignee:
              aljoscha Aljoscha Krettek
              Reporter:
              trohrmann Till Rohrmann
            • Votes:
              1 Vote for this issue
              Watchers:
              4 Start watching this issue

              Dates

              • Created:
                Updated:
                Resolved: