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From "Pradeep Kamath (JIRA)" <j...@apache.org>
Subject [jira] Created: (PIG-1366) PigStorage's pushProjection implementation results in NPE under certain data conditions
Date Thu, 08 Apr 2010 03:44:36 GMT
PigStorage's pushProjection implementation results in NPE under certain data conditions
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                 Key: PIG-1366
                 URL: https://issues.apache.org/jira/browse/PIG-1366
             Project: Pig
          Issue Type: Bug
    Affects Versions: 0.6.0, 0.7.0
            Reporter: Pradeep Kamath
            Assignee: Pradeep Kamath
             Fix For: 0.7.0


Under the following conditions, a NullPointerException is caused when PigStorage is used:
If in the script, only the 2nd and 3rd column of the data (say) are used, the PruneColumns
optimization passes this information to PigStorage through the pushProjection() method. If
the data contains a row with only one column (malformed data due to missing cols in certain
rows), PigStorage returns a Tuple backed by a null ArrayList. Subsequent projection operations
on this tuple result in the NPE.

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