Github user ueshin commented on the issue: https://github.com/apache/spark/pull/16781 @squito I'm sorry for late reply. I was reviewing this pr again and current Hive behavior deeply. It seems the both behaviors are the same when the table property exists, but this is a little complicated, so I want to confirm if the following behavior is correct or not by the simple example: ```scala scala> spark.conf.set("spark.sql.session.timeZone", "JST") scala> sql("create table foo (display string, ts timestamp) stored as parquet tblproperties (parquet.mr.int96.write.zone='JST')") scala> sql("insert into foo values ('2017-01-01 00:00:00', cast('2017-01-01 00:00:00' as timestamp))") scala> sql("select * from foo").show(truncate = false) +-------------------+-------------------+ |display |ts | +-------------------+-------------------+ |2017-01-01 00:00:00|2017-01-01 00:00:00| +-------------------+-------------------+ scala> sql("create table bar (display string, ts timestamp) stored as parquet") scala> sql("insert into bar values ('2017-01-01 00:00:00', cast('2017-01-01 00:00:00' as timestamp))") scala> sql("select * from bar").show(truncate = false) +-------------------+-------------------+ |display |ts | +-------------------+-------------------+ |2017-01-01 00:00:00|2017-01-01 00:00:00| +-------------------+-------------------+ scala> spark.conf.set("spark.sql.session.timeZone", "PST") // ts is adjusted from JST to PST. scala> sql("select * from foo").show(truncate = false) +-------------------+-------------------+ |display |ts | +-------------------+-------------------+ |2017-01-01 00:00:00|2017-01-01 00:00:00| +-------------------+-------------------+ // ts isn't adjusted. scala> sql("select * from bar").show(truncate = false) +-------------------+-------------------+ |display |ts | +-------------------+-------------------+ |2017-01-01 00:00:00|2016-12-31 07:00:00| +-------------------+-------------------+ ```
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