dbtsai commented on a change in pull request #27728:
[SPARK-25556][SPARK-17636][SPARK-31026][SPARK-31060][SQL][test-hive1.2] Nested
Column Predicate Pushdown for Parquet
URL: https://github.com/apache/spark/pull/27728#discussion_r396944064
##########
File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/sources/filters.scala
##########
@@ -32,6 +33,7 @@ import org.apache.spark.annotation.{Evolving, Stable}
sealed abstract class Filter {
/**
* List of columns that are referenced by this filter.
+ * Note that, if a column contains `dots` in name, it will be quoted to
avoid confusion.
Review comment:
As @cloud-fan suggested, I add a conf to disable the new behavior so people
can still use their old DSv1 implementation while upgrading to the new
behavior.
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