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https://issues.apache.org/jira/browse/SPARK-39602?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17562326#comment-17562326
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Hyukjin Kwon commented on SPARK-39602:
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Why don't you decrease the number of partitions?
> Invoking .repartition(100000) in a unit test causes the unit test to take >20
> minutes.
> --------------------------------------------------------------------------------------
>
> Key: SPARK-39602
> URL: https://issues.apache.org/jira/browse/SPARK-39602
> Project: Spark
> Issue Type: Bug
> Components: Spark Core
> Affects Versions: 3.3.0
> Reporter: Tanin Na Nakorn
> Priority: Major
>
> Here's a proof of concept:
> {code}
> val result = spark
> .createDataset(List("test"))
> .rdd
> .repartition(100000)
> .map { _ =>
> "test"
> }
> .collect()
> .toList
>
> println(result)
> {code}
> This code takes a very long time in unit test.
> We aim to test for correctness in unit test... not testing the repartition.
> Is there a way to make it faster? (e.g. disable partition in test)
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