[jira] [Commented] (SPARK-24572) "eager execution" for R shell, IDE

["Weiqiang Zhuang (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/SPARK-24572?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16611357#comment-16611357 ] 

Weiqiang Zhuang commented on SPARK-24572:
-----------------------------------------

[~felixcheung] are you thinking of using the same config introduced by the SPARK-24215 and doing something like below in red?
{code:java}
setMethod("show", "SparkDataFrame",
          function(object) {
            if (identical(sparkR.conf("spark.sql.repl.eagerEval.enabled", "false")[[1]], "true")) {
              return(showDF(object))
            }
            cols <- lapply(dtypes(object), function(l) {
              paste(l, collapse = ":")
            })
            s <- paste(cols, collapse = ", ")
            cat(paste(class(object), "[", s, "]\n", sep = ""))
          })
{code}
 

> "eager execution" for R shell, IDE
> ----------------------------------
>
>                 Key: SPARK-24572
>                 URL: https://issues.apache.org/jira/browse/SPARK-24572
>             Project: Spark
>          Issue Type: Bug
>          Components: SparkR
>    Affects Versions: 2.4.0
>            Reporter: Felix Cheung
>            Priority: Major
>
> like python in SPARK-24215
> we could also have eager execution when SparkDataFrame is returned to the R shell



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