maropu commented on pull request #29085:
URL: https://github.com/apache/spark/pull/29085#issuecomment-662191688
I meant the behaivour of v3.0.0. Either way, this PR is getting larger, so I
think its okay to support it in follow-ups.
```
// v3.0.0
scala> sql("""
| SELECT TRANSFORM(a)
| USING 'cat' as output
| FROM VALUES (array(1, 2)) t(a)
| """).show()
[Stage 0:> (0 + 1)
/ 1]20/07/22 10:33:59 ERROR ScriptTransformationWriterThread:
Thread-ScriptTransformation-Feed exit cause by:
java.lang.ClassCastException:
org.apache.spark.sql.catalyst.expressions.UnsafeArrayData cannot be cast to
[Ljava.lang.Object;
at
org.apache.hadoop.hive.serde2.objectinspector.StandardListObjectInspector.getList(StandardListObjectInspector.java:111)
at
org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe.serialize(LazySimpleSerDe.java:299)
at org.apache.hadoop.hive.se
```
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