[jira] [Assigned] (SPARK-15616) Metastore relation should fallback to HDFS size of partitions that are involved in Query if statistics are not available.
[ https://issues.apache.org/jira/browse/SPARK-15616?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Apache Spark reassigned SPARK-15616: Assignee: Apache Spark > Metastore relation 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: Improvement > Components: SQL >Reporter: Lianhui Wang >Assignee: Apache Spark > > 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 (v6.3.4#6332) - To unsubscribe, e-mail: issues-unsubscr...@spark.apache.org For additional commands, e-mail: issues-h...@spark.apache.org
[jira] [Assigned] (SPARK-15616) Metastore relation should fallback to HDFS size of partitions that are involved in Query if statistics are not available.
[ https://issues.apache.org/jira/browse/SPARK-15616?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Apache Spark reassigned SPARK-15616: Assignee: (was: Apache Spark) > Metastore relation 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: Improvement > Components: SQL >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 (v6.3.4#6332) - To unsubscribe, e-mail: issues-unsubscr...@spark.apache.org For additional commands, e-mail: issues-h...@spark.apache.org
