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From "Yin Huai (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HIVE-6632) ORC should be able to only read needed fields in a complex column
Date Wed, 12 Mar 2014 16:49:48 GMT
Yin Huai created HIVE-6632:
------------------------------

             Summary: ORC should be able to only read needed fields in a complex column
                 Key: HIVE-6632
                 URL: https://issues.apache.org/jira/browse/HIVE-6632
             Project: Hive
          Issue Type: Improvement
            Reporter: Yin Huai


Currently, we use a string of ids to record needed columns. However, this string cannot record
needed fields of a complex column. Although ORC decomposes a complex column to multiple sub-columns,
it has to load the entire complex column if only a single field of this complex column is
needed.



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