maropu commented on a change in pull request #29304:
URL: https://github.com/apache/spark/pull/29304#discussion_r464355243
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File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/internal/SQLConf.scala
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@@ -2678,14 +2678,25 @@ object SQLConf {
.checkValue(_ >= 0, "The value must be non-negative.")
.createWithDefault(8)
+ val OPTIMIZE_NULL_AWARE_ANTI_JOIN_MAX_NUM_KEYS =
+ buildConf("spark.sql.optimizeNullAwareAntiJoin.maxNumKeys")
+ .internal()
+ .doc("The maximum number of keys that will be supported to use NAAJ
optimize. " +
+ "While with NAAJ optimize, buildSide data would be expanded to
(2^numKeys - 1) times, " +
+ "it might cause Driver OOM if NAAJ numKeys increased, since it is
exponential growth.")
+ .intConf
Review comment:
add `.version("3.1.0")`: https://github.com/apache/spark/pull/29335
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