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https://issues.apache.org/jira/browse/SPARK-48656?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17856226#comment-17856226
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ASF GitHub Bot commented on SPARK-48656:
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User 'wayneguow' has created a pull request for this issue:
https://github.com/apache/spark/pull/47019
> ArrayIndexOutOfBoundsException in CartesianRDD getPartitions
> ------------------------------------------------------------
>
> Key: SPARK-48656
> URL: https://issues.apache.org/jira/browse/SPARK-48656
> Project: Spark
> Issue Type: Improvement
> Components: Spark Core
> Affects Versions: 4.0.0
> Reporter: Nick Young
> Priority: Major
>
> ```val rdd1 = spark.sparkContext.parallelize(Seq(1, 2, 3), numSlices = 65536)
> val rdd2 = spark.sparkContext.parallelize(Seq(1, 2, 3), numSlices =
> 65536)rdd2.cartesian(rdd1).partitions```
> Throws `ArrayIndexOutOfBoundsException: 0` at CartesianRDD.scala:69 because
> `s1.index * numPartitionsInRdd2 + s2.index` overflows and wraps to 0. We
> should provide a better error message which indicates the number of partition
> overflows so it's easier for the user to debug.
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