Sergey Shelukhin created HIVE-13617:
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             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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