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From "Guoqiang Li (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (SPARK-571) Forbid return statements when cleaning closures
Date Sun, 11 May 2014 06:39:14 GMT

     [ https://issues.apache.org/jira/browse/SPARK-571?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Guoqiang Li updated SPARK-571:
------------------------------

    Description: 
By mistake, I wrote some code like this:
{code}
object Foo {
 def main() {
   val sc = new SparkContext(...)
   sc.parallelize(0 to 10,10).map({  ... return 1 ... }).collect
 }
}
{code}
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?

  was:
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?


> 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
>            Assignee: William Benton
>
> By mistake, I wrote some code like this:
> {code}
> object Foo {
>  def main() {
>    val sc = new SparkContext(...)
>    sc.parallelize(0 to 10,10).map({  ... return 1 ... }).collect
>  }
> }
> {code}
> 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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