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Posted to issues@spark.apache.org by "Apache Spark (JIRA)" <ji...@apache.org> on 2017/01/09 05:41:58 UTC

[jira] [Commented] (SPARK-18335) Add a numSlices parameter to SparkR's createDataFrame

    [ https://issues.apache.org/jira/browse/SPARK-18335?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15810748#comment-15810748 ] 

Apache Spark commented on SPARK-18335:
--------------------------------------

User 'felixcheung' has created a pull request for this issue:
https://github.com/apache/spark/pull/16512

> Add a numSlices parameter to SparkR's createDataFrame
> -----------------------------------------------------
>
>                 Key: SPARK-18335
>                 URL: https://issues.apache.org/jira/browse/SPARK-18335
>             Project: Spark
>          Issue Type: Improvement
>          Components: SparkR
>            Reporter: Shixiong Zhu
>
> SparkR's createDataFrame doesn't have a `numSlices` parameter. The user cannot set a partition number when converting a large R dataframe to SparkR dataframe. A workaround is using `repartition`, but it requires a shuffle stage. It's better to support the `numSlices` parameter in the `createDataFrame` method.



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