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Posted to reviews@spark.apache.org by cloud-fan <gi...@git.apache.org> on 2018/08/02 11:13:15 UTC

[GitHub] spark issue #21109: [SPARK-24020][SQL] Sort-merge join inner range optimizat...

Github user cloud-fan commented on the issue:

    https://github.com/apache/spark/pull/21109
  
    I think range join is a very important feature, but the current implementation is not robust enough(no spilling to disk). Have you explored other simpler solutions? I vaguely remember that some papers describe a way to rewrite range join to equal-join during the logical phase.


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