pan3793 commented on code in PR #54182:
URL: https://github.com/apache/spark/pull/54182#discussion_r2775534617
##########
sql/core/src/test/scala/org/apache/spark/sql/connector/KeyGroupedPartitioningSuite.scala:
##########
@@ -2841,4 +2841,39 @@ class KeyGroupedPartitioningSuite extends
DistributionAndOrderingSuiteBase {
}
assert(metrics("number of rows read") == "3")
}
+
+ test("bug") {
Review Comment:
ONLY copy this test case to the master codebase, and run
```
$ build/sbt "sql/testOnly *KeyGroupedPartitioningSuite -- -z bug"
...
[info] - bug *** FAILED *** (1 second, 884 milliseconds)
[info] java.lang.ArrayIndexOutOfBoundsException: Index 1 out of bounds for
length 1
[info] at
scala.collection.immutable.ArraySeq$ofRef.apply(ArraySeq.scala:331)
[info] at
org.apache.spark.sql.catalyst.plans.physical.KeyGroupedPartitioning$.$anonfun$project$1(partitioning.scala:471)
[info] at
org.apache.spark.sql.catalyst.plans.physical.KeyGroupedPartitioning$.$anonfun$project$1$adapted(partitioning.scala:471)
[info] at scala.collection.immutable.ArraySeq.map(ArraySeq.scala:75)
[info] at scala.collection.immutable.ArraySeq.map(ArraySeq.scala:35)
[info] at
org.apache.spark.sql.catalyst.plans.physical.KeyGroupedPartitioning$.project(partitioning.scala:471)
[info] at
org.apache.spark.sql.execution.KeyGroupedPartitionedScan.$anonfun$getOutputKeyGroupedPartitioning$5(KeyGroupedPartitionedScan.scala:58)
...
```
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