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  1. Apache Nemo
  2. NEMO-250

Element-wise processing in GroupByKeyAndWindowTransform

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    • Type: Improvement
    • Status: Open
    • Priority: Major
    • Resolution: Unresolved
    • Affects Version/s: None
    • Fix Version/s: None
    • Labels:
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      Description

      Reference: https://github.com/apache/incubator-nemo/pull/135/files#r229178956 

      GroupByKeyAndWindowTransform calls DoFnRunner.processElement() every watermark, to reduce the overhead of calling processElement(). But, this approach can delay the event processing in streaming, if the watermark is not triggered for a long time. 

      It would be good to create another GroupByKeyAndWindowTransform for streaming operations. 

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              • Assignee:
                Unassigned
                Reporter:
                taegeonum Tae-Geon Um
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                • Created:
                  Updated: