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Posted to reviews@spark.apache.org by GitBox <gi...@apache.org> on 2019/02/18 08:04:03 UTC

[GitHub] yucai opened a new pull request #23821: [SPARK-26909][FOLLOWUP][SQL] use unsafeRow.hashCode() as hash value in HashAggregate

yucai opened a new pull request #23821: [SPARK-26909][FOLLOWUP][SQL] use unsafeRow.hashCode() as hash value in HashAggregate
URL: https://github.com/apache/spark/pull/23821
 
 
   ## What changes were proposed in this pull request?
   
   This is a followup PR for #21149.
   
   New way uses unsafeRow.hashCode() as hash value in HashAggregate.
   The unsafe row has [null bit set] etc., the result should be different, so we don't need weird `48`.
   
   ## How was this patch tested?
   
   UTs.

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