HyukjinKwon commented on a change in pull request #27580:
[SPARK-27619][SQL]MapType should be prohibited in hash expressions
URL: https://github.com/apache/spark/pull/27580#discussion_r379961159
##########
File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/internal/SQLConf.scala
##########
@@ -2188,6 +2188,12 @@ object SQLConf {
.booleanConf
.createWithDefault(false)
+ val LEGACY_USE_HASH_ON_MAPTYPE =
buildConf("spark.sql.legacy.useHashOnMapType")
+ .doc("When set to true, hash expressions can be applied on elements of
MapType. Otherwise, " +
+ "an analysis exception will be thrown.")
+ .booleanConf.
Review comment:
nit: the doc at the end. It has to be in the next line.
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