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From "Ferdinand Xu (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HIVE-17783) Hybrid Grace Join has performance degradation for N-way join using Hive on Tez
Date Thu, 12 Oct 2017 03:07:00 GMT
Ferdinand Xu created HIVE-17783:
-----------------------------------

             Summary: Hybrid Grace Join has performance degradation for N-way join using Hive
on Tez
                 Key: HIVE-17783
                 URL: https://issues.apache.org/jira/browse/HIVE-17783
             Project: Hive
          Issue Type: Bug
    Affects Versions: 2.2.0
         Environment: 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
            Reporter: Ferdinand Xu


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.




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