Github user rxin commented on a diff in the pull request: https://github.com/apache/spark/pull/20774#discussion_r175335072 --- Diff: sql/catalyst/src/main/scala/org/apache/spark/sql/internal/SQLConf.scala --- @@ -479,6 +479,15 @@ object SQLConf { .checkValues(HiveCaseSensitiveInferenceMode.values.map(_.toString)) .createWithDefault(HiveCaseSensitiveInferenceMode.INFER_AND_SAVE.toString) + val HIVE_COMPARE_DATE_TIMESTAMP_IN_TIMESTAMP = + buildConf("spark.sql.hive.compareDateTimestampInTimestamp") + .doc("When true (default), compare Date with Timestamp after converting both sides to " + + "Timestamp. This behavior is compatible with Hive 2.2 or later. See HIVE-15236. " + + "When false, restore the behavior prior to Spark 2.4. Compare Date with Timestamp after " + + "converting both sides to string.") + .booleanConf --- End diff -- perhaps mention this config will be removed in spark 3.0. (on a related note we should look at those configs for backward compatibility and consider removing them in 3.0)
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