Github user chenghao-intel commented on the pull request:
https://github.com/apache/spark/pull/2762#issuecomment-60541840
@marmbrus @gvramana , #2802 looks good to me in general to fix the constant
value pass into the Hive UDFs, and it does some overlap work with this PR. The
reason I prefer taking the ObjectInspector as parameter are:
* java.util.List[Object], Array[Object] can works with both
`StructObjectInspector`, the same for `ListObjectInspector`, without parameter
`ObjectInspector`, the methods "unwrap / wrap" is probably ambiguous.
* ObjectInspector takes information other than "Constant", for example the
method ".preferWritable", which is a hint for trivial optimization in unwrap.
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