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Posted to dev@tajo.apache.org by "Hyunsik Choi (JIRA)" <ji...@apache.org> on 2013/11/30 14:56:36 UTC

[jira] [Commented] (TAJO-345) MergeScanner should support projectable storages

    [ https://issues.apache.org/jira/browse/TAJO-345?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13835750#comment-13835750 ] 

Hyunsik Choi commented on TAJO-345:
-----------------------------------

+1

Nice work. Ship it!

> MergeScanner should support projectable storages
> ------------------------------------------------
>
>                 Key: TAJO-345
>                 URL: https://issues.apache.org/jira/browse/TAJO-345
>             Project: Tajo
>          Issue Type: Bug
>          Components: storage
>            Reporter: Jihoon Son
>            Assignee: Jihoon Son
>             Fix For: 0.8-incubating
>
>         Attachments: TAJO-345.patch
>
>
> MergeScanner sequentially scans multiple fragments of the same table.
> If the table is stored as a columnar file such as RCFile, MergeScanner should read only target columns.



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