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https://issues.apache.org/jira/browse/SPARK-4019?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14178056#comment-14178056
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Patrick Wendell commented on SPARK-4019:
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Great work getting to the root cause of this [~joshrosen] - this was a tricky
issue.
> Repartitioning with more than 2000 partitions may drop all data when
> partitions are mostly empty.
> -------------------------------------------------------------------------------------------------
>
> Key: SPARK-4019
> URL: https://issues.apache.org/jira/browse/SPARK-4019
> Project: Spark
> Issue Type: Bug
> Components: Spark Core
> Affects Versions: 1.2.0
> Reporter: Xiangrui Meng
> Assignee: Josh Rosen
> Priority: Blocker
>
> {code}
> sc.makeRDD(0 until 10, 1000).repartition(2001).collect()
> {code}
> returns `Array()`.
> 1.1.0 doesn't have this issue. Tried both HASH and SORT manager.
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