[jira] [Commented] (SPARK-6812) filter() on DataFrame does not work as expected

["Sun Rui (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/SPARK-6812?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14528488#comment-14528488 ] 

Sun Rui commented on SPARK-6812:
--------------------------------

I think this is due to function conflict with existing R filter() function. 
If you enforce to call filter() inside SparkR scope, that works.
SparkR:::filter(df, "age > 20")

Originally, in RDD API, we rename RDD filter() to filterRDD() and Filter() . But in DataFrame, filter() name is still used. So we can rename filter() to filterDF() and Filter() as RDD API does.

> filter() on DataFrame does not work as expected
> -----------------------------------------------
>
>                 Key: SPARK-6812
>                 URL: https://issues.apache.org/jira/browse/SPARK-6812
>             Project: Spark
>          Issue Type: Bug
>          Components: SparkR
>            Reporter: Davies Liu
>            Priority: Blocker
>
> {code}
> > filter(df, df$age > 21)
> Error in filter(df, df$age > 21) :
>   no method for coercing this S4 class to a vector
> {code}



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