Github user lianhuiwang commented on the issue: https://github.com/apache/spark/pull/14363 @cloud-fan There is a case that i met. The varchar(length)/char(length) type is not a String Type. But now SparkSQL consider them a string type. So there are different result with the following example: TestHive.sessionState.metadataHive.runSqlHive("CREATE TABLE test (id varchar(50))") TestHive.sessionState.metadataHive.runSqlHive("INSERT INTO TABLE test VALUES ('abcdef')") TestHive.sessionState.metadataHive.runSqlHive("CREATE TABLE test_parquet (id varchar(2) stored as parquet)") TestHive.sessionState.metadataHive.runSqlHive("insert overwrite table varchar_parquet1 select * from test") the result of varchar_parquet1 are 'ab'. spark.sql("insert overwrite table varchar_parquet1 select * from test").show() the result of varchar_parquet1 are 'abcdef'.
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