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Posted to issues@spark.apache.org by "Apache Spark (JIRA)" <ji...@apache.org> on 2016/03/17 18:41:33 UTC
[jira] [Commented] (SPARK-13977) Bring back ShuffledHashJoin
[ https://issues.apache.org/jira/browse/SPARK-13977?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15200009#comment-15200009 ]
Apache Spark commented on SPARK-13977:
--------------------------------------
User 'davies' has created a pull request for this issue:
https://github.com/apache/spark/pull/11788
> Bring back ShuffledHashJoin
> ---------------------------
>
> Key: SPARK-13977
> URL: https://issues.apache.org/jira/browse/SPARK-13977
> Project: Spark
> Issue Type: Task
> Components: SQL
> Reporter: Davies Liu
> Assignee: Davies Liu
>
> ShuffledHashJoin is still useful when:
> 1) any partition of the build side could fit in memory
> 2) the build side is much smaller than stream side, the building hash table on smaller side should be faster than sorting the bigger side.
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