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From "Hyunsik Choi (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (TAJO-144) Implement INSERT OVERWRITE clause
Date Wed, 04 Sep 2013 11:32:51 GMT

     [ https://issues.apache.org/jira/browse/TAJO-144?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Hyunsik Choi updated TAJO-144:
------------------------------

    Attachment: TAJO-144_2.patch

I fixed the above bug, and fixed other problems as follows:

* CREATE TABLE and INSERT OVERWRITE will not print the result in CLI.
* Add QueryMeta that contains a query specific configuration used in TajoMaster, QueryMaster,
TajoWorker, and Task.
* QueryMaster has a catalog client that accesses to CatalogServer in TajoMaster.
* It supports "INSERT OVERWRITE INTO LOCATION '/path/subpath' ..." statements.
* When 'INSERT OVERWRITE INTO' statement finishes, the table statistics is updated.
                
> Implement INSERT OVERWRITE clause
> ---------------------------------
>
>                 Key: TAJO-144
>                 URL: https://issues.apache.org/jira/browse/TAJO-144
>             Project: Tajo
>          Issue Type: New Feature
>          Components: planner/optimizer
>            Reporter: Hyunsik Choi
>            Assignee: Hyunsik Choi
>             Fix For: 0.2-incubating
>
>         Attachments: TAJO-144_2.patch, TAJO-144.patch
>
>
> 'INSERT INTO' appends data into existing table. In contrast, 'INSERT OVERWRITE' will
overwrite existing table data. It is used as an idiom in analytical fields based HDFS. We
need it.

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