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  1. Apache Nemo
  2. NEMO-302

One-to-one communication when GBKW is after FlattenTransform

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Details

    • Bug
    • Status: Open
    • Major
    • Resolution: Unresolved
    • None
    • None
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    Description

      Beam Nexmark query 7 has hotkey fanout. When Nemo translates Query7 DAG, it does not shuffle (key partitioning) in hotkey fanout. 

      See the attached file: 

      edge14 and 15 should be shuffle, but it is one-to-one. We should fix the PipelineTranslator. 

       

      +

       

      Query4 has the similar pattern with Query7. 

      Nemo should shuffle data before FlattenTransform (vertex14). 

       

       

       

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            Unassigned Unassigned
            taegeonum Tae-Geon Um
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