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Posted to issues@spark.apache.org by "Jason Guo (JIRA)" <ji...@apache.org> on 2019/05/28 08:52:00 UTC
[jira] [Updated] (SPARK-27865) Spark SQL support 1:N sort merge
bucket join without shuffle
[ https://issues.apache.org/jira/browse/SPARK-27865?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Jason Guo updated SPARK-27865:
------------------------------
Summary: Spark SQL support 1:N sort merge bucket join without shuffle (was: Spark SQL support 1:N sort merge bucket join)
> Spark SQL support 1:N sort merge bucket join without shuffle
> ------------------------------------------------------------
>
> 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
> Priority: Major
>
> 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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