Github user dongjoon-hyun commented on the pull request:
https://github.com/apache/spark/pull/13282#issuecomment-221435072
It seems not necessary since this PR prevents at the level of `Repartition`
ctor.
```
case class Repartition(numPartitions: Int, shuffle: Boolean, child:
LogicalPlan)
extends UnaryNode {
+ require(numPartitions > 0, s"Number of partitions ($numPartitions) must
be positive.")
override def output: Seq[Attribute] = child.output
}
```
Please see the updated description of this PR, and let me know if I miss
some cases you mentioned.
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