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From "Jitendra Nath Pandey (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HIVE-4655) Vectorization not working with negative constants, hive doesn't fold constants.
Date Tue, 04 Jun 2013 17:47:19 GMT
Jitendra Nath Pandey created HIVE-4655:
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             Summary: Vectorization not working with negative constants, hive doesn't fold
constants.
                 Key: HIVE-4655
                 URL: https://issues.apache.org/jira/browse/HIVE-4655
             Project: Hive
          Issue Type: Sub-task
            Reporter: Jitendra Nath Pandey
            Assignee: Jitendra Nath Pandey


  Hive optimizer doesn't fold the constants, however vectorized code path assumes that constants
have been folded. This should be fixed in hive optimizer. 
  In this jira we just fix vectorization path to handle folding for negative constants. This
is needed because hive plan treats negative constants as unary-minus expression on constants,
therefore these expressions also need constant folding.
This fix will become redundant once constant folding is appropriately implemented in hive
optimizer. (HIVE-746)

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