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https://issues.apache.org/jira/browse/SPARK-571?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13993919#comment-13993919
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William Benton commented on SPARK-571:
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I have a patch for this and will submit a PR later today; can someone please
assign this to me?
> Forbid return statements when cleaning closures
> -----------------------------------------------
>
> Key: SPARK-571
> URL: https://issues.apache.org/jira/browse/SPARK-571
> Project: Spark
> Issue Type: Improvement
> Reporter: tjhunter
>
> By mistake, I wrote some code like this:
> <pre>
> object Foo {
> def main() {
> val sc = new SparkContext(...)
> sc.parallelize(0 to 10,10).map({ ... return 1 ... }).collect
> }
> }
> </pre>
> This compiles fine and actually runs using the local scheduler. However,
> using the mesos scheduler throws a NotSerializableException in the
> CollectTask . I agree the result of the program above should be undefined or
> it should be an error. Would it be possible to have more explicit messages?
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