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Posted to issues@spark.apache.org by "Jason Guo (JIRA)" <ji...@apache.org> on 2019/05/28 08:51:00 UTC

[jira] [Created] (SPARK-27865) Spark SQL support 1:N sort merge bucket join

Jason Guo created SPARK-27865:
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             Summary: Spark SQL support 1:N sort merge bucket join
                 Key: SPARK-27865
                 URL: https://issues.apache.org/jira/browse/SPARK-27865
             Project: Spark
          Issue Type: New Feature
          Components: SQL
    Affects Versions: 2.4.3
            Reporter: Jason Guo


This feature is to support 1:N bucket join

 

Without the feature, only bucketed tables which have the same buckets can be joint with sort merge bucket join. If two tables have different number of buckets, shuffle is needed

 

This feature make it possible to join two bucketed tables with sort merge bucket join without shuffle



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