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https://issues.apache.org/jira/browse/SPARK-15512?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Apache Spark reassigned SPARK-15512:
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Assignee: (was: Apache Spark)
> repartition(0) should raise IllegalArgumentException.
> -----------------------------------------------------
>
> Key: SPARK-15512
> URL: https://issues.apache.org/jira/browse/SPARK-15512
> Project: Spark
> Issue Type: Bug
> Reporter: Dongjoon Hyun
>
> Previously, SPARK-8893 added the positive partition constrains on
> repartition/coalesce operations in general.
> This PR adds one missing part for that and adds explicit two testcases.
> **Before**
> {code:title=repartition(0)|borderStyle=solid}
> scala> sc.parallelize(1 to 5).coalesce(0).collect()
> java.lang.IllegalArgumentException: requirement failed: Number of partitions
> (0) must be positive.
> ...
> scala> sc.parallelize(1 to 5).repartition(0).collect()
> res1: Array[Int] = Array()
> {code}
> **After**
> {code:title=repartition(0)|borderStyle=solid}
> scala> sc.parallelize(1 to 5).coalesce(0).collect()
> java.lang.IllegalArgumentException: requirement failed: Number of partitions
> (0) must be positive.
> ...
> scala> sc.parallelize(1 to 5).repartition(0).collect()
> java.lang.IllegalArgumentException: requirement failed: Number of partitions
> (0) must be positive.
> ...
> {code}
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