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From "Sergey Shelukhin (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HIVE-13617) LLAP: support non-vectorized execution in IO
Date Tue, 26 Apr 2016 20:40:12 GMT
Sergey Shelukhin created HIVE-13617:
---------------------------------------

             Summary: LLAP: support non-vectorized execution in IO
                 Key: HIVE-13617
                 URL: https://issues.apache.org/jira/browse/HIVE-13617
             Project: Hive
          Issue Type: Bug
            Reporter: Sergey Shelukhin


Two approaches - a separate decoding path, into rows instead of VRBs; or decoding VRBs into
rows. I think the latter might be better - it's not a hugely important path, and perf in non-vectorized
case is not the best anyway, so it's better to make do with much less new code and architectural
disruption. 

Some ORC patches in progress introduce an easy to reuse (or so I hope, anyway) VRB-to-row
conversion, so we should just use that.





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