[jira] [Commented] (SPARK-21536) Remove the workaroud to allow dots in field names in R's createDataFame

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

    [ https://issues.apache.org/jira/browse/SPARK-21536?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16307658#comment-16307658 ] 

Apache Spark commented on SPARK-21536:
--------------------------------------

User 'HyukjinKwon' has created a pull request for this issue:
https://github.com/apache/spark/pull/18737

> Remove the workaroud to allow dots in field names in R's createDataFame
> -----------------------------------------------------------------------
>
>                 Key: SPARK-21536
>                 URL: https://issues.apache.org/jira/browse/SPARK-21536
>             Project: Spark
>          Issue Type: Improvement
>          Components: SparkR
>    Affects Versions: 2.3.0
>            Reporter: Hyukjin Kwon
>            Priority: Minor
>
> We are currently converting dots to underscore in some cases as below in SparkR
> {code}
> > createDataFrame(list(list(1)), "a.a")
> SparkDataFrame[a_a:double]
> ...
> In FUN(X[[i]], ...) : Use a_a instead of a.a  as column name
> {code}
> {code}
> > createDataFrame(list(list(a.a = 1)))
> SparkDataFrame[a_a:double]
> ...
> In FUN(X[[i]], ...) : Use a_a instead of a.a  as column name
> {code}
> This looks introduced in the first place due to SPARK-2775 but now it is fixed in SPARK-6898.



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