Nick Young created SPARK-48656:
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Summary: 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
```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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