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Posted to issues@tajo.apache.org by "Hyunsik Choi (JIRA)" <ji...@apache.org> on 2014/02/19 13:39:20 UTC

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

     [ https://issues.apache.org/jira/browse/TAJO-609?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Hyunsik Choi updated TAJO-609:
------------------------------

    Attachment: TAJO-609.patch

> 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
>
>         Attachments: TAJO-609.patch
>
>
> 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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