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  1. Apache Nemo
  2. NEMO-250

Element-wise processing in GroupByKeyAndWindowTransform

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Details

    • Improvement
    • Status: Open
    • Major
    • Resolution: Unresolved
    • None
    • None
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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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          is caused by

          Improvement - An improvement or enhancement to an existing feature or task. NEMO-230 Emit collected data when receiving watermark in GroupByKeyAndWindowTransform

          • Major - Major loss of function.
          • Resolved

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              Unassigned Unassigned
              taegeonum Tae-Geon Um
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                Created:
                Updated: