uros-db commented on code in PR #45436:
URL: https://github.com/apache/spark/pull/45436#discussion_r1518058827
##########
sql/core/src/test/scala/org/apache/spark/sql/CollationSuite.scala:
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@@ -438,6 +438,39 @@ class CollationSuite extends DatasourceV2SQLBase with
AdaptiveSparkPlanHelper {
}
}
+ test("test concurrently running aggregates") {
+ // generating ICU sort keys is not thread-safe by default so this should
fail
+ // if we don't handle the concurrency properly on Collator level
+
+ for (_ <- 1 to 100) {
Review Comment:
just wondering: have you tried 1000, 10000, etc. or is 100 proven to be
sufficient?
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