[ https://issues.apache.org/jira/browse/SPARK-15530?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Yin Huai updated SPARK-15530: ----------------------------- Assignee: Takeshi Yamamuro > Partitioning discovery logic HadoopFsRelation should use a higher setting of > parallelism > ---------------------------------------------------------------------------------------- > > Key: SPARK-15530 > URL: https://issues.apache.org/jira/browse/SPARK-15530 > Project: Spark > Issue Type: Bug > Components: SQL > Reporter: Yin Huai > Assignee: Takeshi Yamamuro > Fix For: 2.0.0 > > > At > https://github.com/apache/spark/blob/master/sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/fileSourceInterfaces.scala#L418, > we launch a spark job to do parallel file listing in order to discover > partitions. However, we do not set the number of partitions at here, which > means that we are using the default parallelism of the cluster. It is better > to set the number of partitions explicitly to generate smaller tasks, which > help load balancing. -- 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