Github user nongli commented on a diff in the pull request:
https://github.com/apache/spark/pull/8200#discussion_r48502484
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/optimizer/Optimizer.scala
---
@@ -464,6 +465,24 @@ object OptimizeIn extends Rule[LogicalPlan] {
}
/**
+ * Convert an expression into its conjunctive normal form (CNF), i.e. AND
of ORs.
+ * For example, a && b || c is normalized to (a || c) && (b || c) by this
method.
+ *
+ * Refer to https://en.wikipedia.org/wiki/Conjunctive_normal_form for
more information
+ */
+object CNFNormalization extends Rule[LogicalPlan] {
--- End diff --
Capping the size seems reasonable. We need to make sure it continues to
work even if the pass is rerun (respects the original limit).
---
If your project is set up for it, you can reply to this email and have your
reply appear on GitHub as well. If your project does not have this feature
enabled and wishes so, or if the feature is enabled but not working, please
contact infrastructure at [email protected] or file a JIRA ticket
with INFRA.
---
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
