[
https://issues.apache.org/jira/browse/SPARK-15616?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Zhenhua Wang updated SPARK-15616:
---------------------------------
Affects Version/s: 2.3.0
Issue Type: Sub-task (was: Improvement)
Parent: SPARK-17129
> CatalogRelation should fallback to HDFS size of partitions that are involved
> in Query if statistics are not available.
> ----------------------------------------------------------------------------------------------------------------------
>
> Key: SPARK-15616
> URL: https://issues.apache.org/jira/browse/SPARK-15616
> Project: Spark
> Issue Type: Sub-task
> Components: SQL
> Affects Versions: 2.3.0
> Reporter: Lianhui Wang
>
> Currently if some partitions of a partitioned table are used in join
> operation we rely on Metastore returned size of table to calculate if we can
> convert the operation to Broadcast join.
> if Filter can prune some partitions, Hive can prune partition before
> determining to use broadcast joins according to HDFS size of partitions that
> are involved in Query.So sparkSQL needs it that can improve join's
> performance for partitioned table.
--
This message was sent by Atlassian JIRA
(v6.4.14#64029)
---------------------------------------------------------------------
To unsubscribe, e-mail: issues-unsubscr...@spark.apache.org
For additional commands, e-mail: issues-h...@spark.apache.org
