cloud-fan commented on code in PR #38799:
URL: https://github.com/apache/spark/pull/38799#discussion_r1100230831
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sql/catalyst/src/main/scala/org/apache/spark/sql/internal/SQLConf.scala:
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@@ -2580,6 +2580,18 @@ object SQLConf {
.intConf
.createWithDefault(SHUFFLE_SPILL_NUM_ELEMENTS_FORCE_SPILL_THRESHOLD.defaultValue.get)
+ val WINDOW_GROUP_LIMIT_THRESHOLD =
+ buildConf("spark.sql.optimizer.windowGroupLimitThreshold")
+ .internal()
+ .doc("Threshold for filter the dataset by the window group limit before"
+
+ " window-based top-k computation. By setting this value to -1 window
group limit can be" +
+ " disabled.")
+ .version("3.4.0")
+ .intConf
+ .checkValue(_ >= -1,
+ "The threshold of window group limit must be -1, 0 or positive
integer.")
Review Comment:
why can't 0 indicate disable?
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