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From "Jinho Kim (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (TAJO-199) All relations in catalog must have data volume size.
Date Fri, 04 Oct 2013 03:08:44 GMT

    [ https://issues.apache.org/jira/browse/TAJO-199?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13785861#comment-13785861
] 

Jinho Kim commented on TAJO-199:
--------------------------------

++1 
This is indeed necessary work.
Thank you!!

> All relations in catalog must have data volume size.
> ----------------------------------------------------
>
>                 Key: TAJO-199
>                 URL: https://issues.apache.org/jira/browse/TAJO-199
>             Project: Tajo
>          Issue Type: Improvement
>          Components: catalog, planner/optimizer, storage
>            Reporter: Hyunsik Choi
>            Assignee: Hyunsik Choi
>             Fix For: 0.2-incubating
>
>         Attachments: TAJO-199_2.patch, TAJO-199.patch
>
>
> Some relations generated in specific file format like RCFile and Trevni may have 0 bytes
as a data volume. In order to use data volume as some factor in query optimization, we need
to force all relations to have exact data volume.



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