[
https://issues.apache.org/jira/browse/SPARK-15530?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Apache Spark reassigned SPARK-15530:
------------------------------------
Assignee: (was: Apache Spark)
> 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
>
> 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: [email protected]
For additional commands, e-mail: [email protected]
