[jira] [Commented] (SPARK-10999) Physical plan node Coalesce should be able to handle UnsafeRow

["Apache Spark (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/SPARK-10999?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14948133#comment-14948133 ] 

Apache Spark commented on SPARK-10999:
--------------------------------------

User 'liancheng' has created a pull request for this issue:
https://github.com/apache/spark/pull/9024

> Physical plan node Coalesce should be able to handle UnsafeRow
> --------------------------------------------------------------
>
>                 Key: SPARK-10999
>                 URL: https://issues.apache.org/jira/browse/SPARK-10999
>             Project: Spark
>          Issue Type: Bug
>          Components: SQL
>    Affects Versions: 1.6.0
>            Reporter: Cheng Lian
>            Assignee: Cheng Lian
>            Priority: Minor
>
> The following PySpark snippet shows the problem:
> {noformat}
> >>> sqlContext.range(10).selectExpr('id AS a').coalesce(1).explain(True)
> ...
> == Physical Plan ==
> Coalesce 1
>  ConvertToSafe
>   TungstenProject [id#3L AS a#4L]
>    Scan PhysicalRDD[id#3L]
> {noformat}
> The {{ConvertToSafe}} is unnecessary.



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