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https://issues.apache.org/jira/browse/SPARK-6812?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14532070#comment-14532070
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Sun Rui commented on SPARK-6812:
--------------------------------

[~shivaram], Yes I agree. Seems there are still two methods, sampleDF() and 
saveDF(), we can change them back to sample() and save()?


> 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
>            Assignee: Sun Rui
>            Priority: Blocker
>             Fix For: 1.4.0
>
>
> {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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