gengliangwang commented on a change in pull request #28459:
URL: https://github.com/apache/spark/pull/28459#discussion_r420545275
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File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/internal/SQLConf.scala
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@@ -845,8 +845,9 @@ object SQLConf {
.doc("When true, enable the metadata-only query optimization that use the
table's metadata " +
"to produce the partition columns instead of table scans. It applies
when all the columns " +
"scanned are partition columns and the query has an aggregate operator
that satisfies " +
- "distinct semantics. By default the optimization is disabled, since it
may return " +
- "incorrect results when the files are empty.")
+ "distinct semantics. By default the optimization is disabled, and
deprecated as of Spark " +
Review comment:
nit: could you add this note in the comment of the rule as well?
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