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Posted to reviews@spark.apache.org by viirya <gi...@git.apache.org> on 2017/02/04 12:01:21 UTC

[GitHub] spark issue #16677: [SPARK-19355][SQL] Use map output statistices to improve...

Github user viirya commented on the issue:

    https://github.com/apache/spark/pull/16677
  
    @cloud-fan Compared with the sizes of each block, we only send back an Int for each partition. I think the overhead should be very low.


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