[jira] [Updated] (SPARK-6878) Sum on empty RDD fails with exception

["Erik van Oosten (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SPARK-6878?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Erik van Oosten updated SPARK-6878:
-----------------------------------
    Flags: Patch

> Sum on empty RDD fails with exception
> -------------------------------------
>
>                 Key: SPARK-6878
>                 URL: https://issues.apache.org/jira/browse/SPARK-6878
>             Project: Spark
>          Issue Type: Bug
>          Components: Spark Core
>    Affects Versions: 1.2.0
>            Reporter: Erik van Oosten
>            Priority: Minor
>
> {{Sum}} on an empty RDD throws an exception. Expected result is {{0}}.
> A simple fix is the replace
> {noformat}
> class DoubleRDDFunctions {
>   def sum(): Double = self.reduce(_ + _)
> {noformat} 
> with:
> {noformat}
> class DoubleRDDFunctions {
>   def sum(): Double = self.aggregate(0.0)(_ + _, _ + _)
> {noformat}



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