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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (TAJO-345) MergeScanner should support projectable storages
Date Sat, 30 Nov 2013 14:08:40 GMT

    [ https://issues.apache.org/jira/browse/TAJO-345?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13835754#comment-13835754
] 

Hudson commented on TAJO-345:
-----------------------------

SUCCESS: Integrated in Tajo-trunk-postcommit #576 (See [https://builds.apache.org/job/Tajo-trunk-postcommit/576/])
TAJO-345: MergeScanner should support projectable storages. (jihoon) (jihoonson: https://git-wip-us.apache.org/repos/asf?p=incubator-tajo.git&a=commit&h=1191003ef2f20acdfa84490eb314a0e8c5d510de)
* tajo-core/tajo-core-storage/src/main/java/org/apache/tajo/storage/MergeScanner.java
* tajo-core/tajo-core-backend/src/main/java/org/apache/tajo/engine/planner/physical/SeqScanExec.java
* tajo-core/tajo-core-storage/src/test/java/org/apache/tajo/storage/TestMergeScanner.java
* CHANGES.txt


> 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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