Github user dongjoon-hyun commented on the issue:
https://github.com/apache/spark/pull/20208
@gatorsmile . Yes. It's officially supported Hive like the following
compatible cases which means upgrading wider types. As you see in my PR, Apache
Spark 2.3 also supports, but the degree of support depends on data sources.
```sql
hive> CREATE TABLE t1(a int) STORED AS ORC;
hive> INSERT INTO t1 VALUES(1);
hive> ALTER TABLE t1 CHANGE a a bigint;
hive> SELECT * FROM t1;
OK
1
Time taken: 0.137 seconds, Fetched: 1 row(s)
```
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