Github user mgaido91 commented on a diff in the pull request:
https://github.com/apache/spark/pull/21911#discussion_r207509267
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/ResolveHints.scala
---
@@ -102,6 +104,38 @@ object ResolveHints {
}
}
+ /**
+ * COALESCE Hint accepts name "COALESCE" and "REPARTITION".
+ * Its parameter includes a partition number.
+ */
+ class ResolveCoalesceHints(conf: SQLConf) extends Rule[LogicalPlan] {
--- End diff --
the `conf` is not used anywhere, we can remove it
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