[
https://issues.apache.org/jira/browse/HIVE-8202?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Szehon Ho updated HIVE-8202:
----------------------------
Attachment: HIVE-8202.7-spark.patch
Rebase with mapjoin change, address review comments.
> Support SMB Join for Hive on Spark [Spark Branch]
> -------------------------------------------------
>
> Key: HIVE-8202
> URL: https://issues.apache.org/jira/browse/HIVE-8202
> Project: Hive
> Issue Type: Sub-task
> Components: Spark
> Reporter: Xuefu Zhang
> Assignee: Szehon Ho
> Attachments: HIVE-8202.1-spark.patch, HIVE-8202.2-spark.patch,
> HIVE-8202.3-spark.patch, HIVE-8202.4-spark.patch, HIVE-8202.5-spark.patch,
> HIVE-8202.6-spark.patch, HIVE-8202.7-spark.patch, Hive on Spark SMB
> Join.docx, Hive on Spark SMB Join.pdf
>
>
> SMB joins are used wherever the tables are sorted and bucketed. It's a
> map-side join. The join boils down to just merging the already sorted tables,
> allowing this operation to be faster than an ordinary map-join.
> The task is to research and support the conversion from regular SMB join to
> SMB map join for Spark execution engine.
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
