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From "Chao Sun (JIRA)" <>
Subject [jira] [Created] (HIVE-16009) HoS: refactor set reducer parallelism
Date Wed, 22 Feb 2017 17:38:45 GMT
Chao Sun created HIVE-16009:

             Summary: HoS: refactor set reducer parallelism
                 Key: HIVE-16009
             Project: Hive
          Issue Type: Improvement
          Components: Spark
            Reporter: Chao Sun

There are two paths for Spark set reducer parallelism, depending on the config {{hive.spark.use.op.stats}}.
We currently handle all the logic in {{SetSparkReducerParallelism}}, and the logic is a bit
complicated. Ideally we should refactor this to make it clearer, perhaps with separate rules
for the paths.

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