maropu commented on a change in pull request #29075:
URL: https://github.com/apache/spark/pull/29075#discussion_r454001849
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File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/predicates.scala
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@@ -207,13 +207,15 @@ trait PredicateHelper extends Logging {
* CNF can explode exponentially in the size of the input expression when
converting [[Or]]
* clauses. Use a configuration [[SQLConf.MAX_CNF_NODE_COUNT]] to prevent
such cases.
*
- * @param condition to be converted into CNF.
+ * @param condition Condition to be converted into CNF.
+ * @param groupExpsFunc A method for grouping intermediate results so that
the final result can be
+ * shorter.
Review comment:
`A method to group expressions for reducing the size of pushed down
predicates and corresponding codegen`?
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