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Posted to issues@tajo.apache.org by "Hyunsik Choi (JIRA)" <ji...@apache.org> on 2014/02/19 13:35:19 UTC

[jira] [Created] (TAJO-609) PlannerUtil::getRelationLineage ignores PartitionedTableScanNode

Hyunsik Choi created TAJO-609:
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             Summary: PlannerUtil::getRelationLineage ignores PartitionedTableScanNode
                 Key: TAJO-609
                 URL: https://issues.apache.org/jira/browse/TAJO-609
             Project: Tajo
          Issue Type: Bug
          Components: planner/optimizer
            Reporter: Hyunsik Choi
            Assignee: Hyunsik Choi
             Fix For: 0.8-incubating


Currently, PlannerUtil::getRelationLineage ignores PartitionedTableScanNode. As a result, PlannerUtil::getRelationLineage can return empty relations. It results in wrong estimation of relation size. Finally, in the case where a broadcast join between a partitioned table and a small table, this problem causes the bug to choose the larger table instead of smaller one to be loaded on hash table.

This patch fixes this bug, refactors inner-join related methods, and added more comments on them.



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