enforce bucketing for a table
-----------------------------

                 Key: HIVE-1178
                 URL: https://issues.apache.org/jira/browse/HIVE-1178
             Project: Hadoop Hive
          Issue Type: New Feature
          Components: Query Processor
            Reporter: Namit Jain
            Assignee: Namit Jain
             Fix For: 0.6.0


If the table being inserted is a bucketed, currently hive does not try to 
enforce that.
An option should be added for checking that.

Moreover, the number of buckets can be higher than the number of maximum 
reducers, in which
case a single reducer can write to multiple files.

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