Github user cloud-fan commented on a diff in the pull request:
https://github.com/apache/spark/pull/19719#discussion_r150366571
--- Diff: sql/hive/src/main/scala/org/apache/spark/sql/hive/HiveUtils.scala
---
@@ -66,6 +66,12 @@ private[spark] object HiveUtils extends Logging {
.stringConf
.createWithDefault(builtinHiveVersion)
+ // A deprecated config which is only used to provide a default value, in
case some existing
+ // applications depend on this config, e.g. Spark SQL ODBC driver.
+ val HIVE_EXECUTION_VERSION = buildConf("spark.sql.hive.version")
--- End diff --
This config is a kind of a fake one, I think comments are enough for it.
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