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Posted to dev@hive.apache.org by "John Sichi (JIRA)" <ji...@apache.org> on 2010/06/04 01:09:59 UTC

[jira] Created: (HIVE-1390) push column projection down to HBase handler's getSplits

push column projection down to HBase handler's getSplits
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                 Key: HIVE-1390
                 URL: https://issues.apache.org/jira/browse/HIVE-1390
             Project: Hadoop Hive
          Issue Type: Improvement
          Components: HBase Handler
    Affects Versions: 0.6.0
            Reporter: John Sichi
            Assignee: John Sichi
             Fix For: 0.6.0


We already push down column projections for the actual scans; maybe we should do the same for getSplits?  I don't think it makes a difference currently (since HBase determines the splits based on the regions), but in the future, if they get smarter and adjust the splits based on column volumetrics, then this might make a difference as an optimization.

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