Github user scwf commented on the pull request:
https://github.com/apache/spark/pull/3431#issuecomment-68986040
@yhuai if we want to handle it in
```org.apache.spark.sql.hive.MetastoreRelation$SchemaAttribute.toAttribute```,
it is hardly to reuse the data type parser of ddl, so maybe we can/should
revert the ```HiveMetastoreTypes``` ?
Actually i think whether to allow users to define ```struct<>``` is a small
point, how about let users can do this and then
```org.apache.spark.sql.hive.MetastoreRelation``` reuse the data type parser of
ddl?
This two both ok for me, if you have any other concern let me know.
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