Ben Becker created DRILL-242:
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             Summary: Hash partitioner dosn't handle negative hash values and 
may produce empty schemas
                 Key: DRILL-242
                 URL: https://issues.apache.org/jira/browse/DRILL-242
             Project: Apache Drill
          Issue Type: Bug
            Reporter: Ben Becker
         Attachments: DRILL-242.patch

The hash function may return a negative value, which was not handled by the 
partitioner's use of modulus (which carries sign in Java).

Also, the OutgoingRecordBatch clears the schema if the last batch is empty.


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