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Posted to issues@tajo.apache.org by "Jihoon Son (JIRA)" <ji...@apache.org> on 2016/02/15 08:35:18 UTC

[jira] [Resolved] (TAJO-1939) Implement PgSQLTablespace::getTableVolume() method

     [ https://issues.apache.org/jira/browse/TAJO-1939?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jihoon Son resolved TAJO-1939.
------------------------------
       Resolution: Fixed
    Fix Version/s: 0.11.2

> Implement PgSQLTablespace::getTableVolume() method
> --------------------------------------------------
>
>                 Key: TAJO-1939
>                 URL: https://issues.apache.org/jira/browse/TAJO-1939
>             Project: Tajo
>          Issue Type: Task
>          Components: JDBC Storage
>            Reporter: Jihoon Son
>            Assignee: Jihoon Son
>             Fix For: 0.12.0, 0.11.2
>
>
> Table volume has an important role in query planning. Tajo's query optimizer makes many decisions based on table volume, because it is currently the only available statistics. 
> However, PgSQLTablespace doesn't support getTableVolume() method, so our plan is not good when the query involves any pgsql tables. 



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