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  1. Hive
  2. HIVE-17783

Hybrid Grace Hash Join has performance degradation for N-way join using Hive on Tez

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Details

    • Bug
    • Status: Open
    • Major
    • Resolution: Unresolved
    • 2.2.0
    • None
    • None
    • None
    • 8*Intel(R) Xeon(R) CPU E5-2699 v4 @ 2.20GHz
      1 master + 7 workers
      TPC-DS at 3TB data scales
      Hive version : 2.2.0

    Description

      Most configurations are using default value. And the benchmark is to test enabling against disabling hybrid grace hash join using TPC-DS queries at 3TB data scales. Many queries related to N-way join has performance degradation over three times test. Detailed result is attached.

      Attachments

        1. screenshot-1.png
          7 kB
          Ferdinand Xu
        2. Hybrid_Grace_Hash_Join.xlsx
          15 kB
          Ferdinand Xu

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              Unassigned Unassigned
              Ferd Ferdinand Xu
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              Dates

                Created:
                Updated: