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From "Hyunsik Choi (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (TAJO-316) Improve GreedyHeuristicJoinOrderAlgorithm to deal with non-commutative joins
Date Tue, 03 Dec 2013 15:58:35 GMT

     [ https://issues.apache.org/jira/browse/TAJO-316?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Hyunsik Choi updated TAJO-316:
------------------------------

    Attachment: TAJO-316_2.patch

I attach the second patch. This patch fixes additionally TAJO-340.

> Improve GreedyHeuristicJoinOrderAlgorithm to deal with non-commutative joins
> ----------------------------------------------------------------------------
>
>                 Key: TAJO-316
>                 URL: https://issues.apache.org/jira/browse/TAJO-316
>             Project: Tajo
>          Issue Type: Improvement
>          Components: planner/optimizer
>            Reporter: Hyunsik Choi
>            Assignee: Hyunsik Choi
>              Labels: cbo
>             Fix For: 0.8-incubating
>
>         Attachments: TAJO-316.patch, TAJO-316_2.patch
>
>
> GreedyHeuristicJoinOrderAlgorithm is a default cost-based join order algorithm. It is
designed only for inner joins, and it cannot deal with non-commutative joins, such as left/right/full
outer join and semi/anti join. The main goal of this issue is to improve this algorithm to
deal with them.



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