Tags: performance* + spark*

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  1. df.repartition($"key", 2).sortWithinPartitions()
  2. -set hive.exec.orc.split.strategy=ETL; -- this will work only for specific values scan, if full table scan will be required anyway, use default (HYBRID) or BI.
    2017-06-12 Tags: , , , , , , , , by klotz

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