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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