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Posted to issues@tajo.apache.org by "Hyunsik Choi (JIRA)" <ji...@apache.org> on 2016/01/27 23:18:39 UTC

[jira] [Updated] (TAJO-1940) Implement HBaseTablespace::getTableVolume() method

     [ https://issues.apache.org/jira/browse/TAJO-1940?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Hyunsik Choi updated TAJO-1940:
-------------------------------
    Issue Type: Improvement  (was: Task)

> Implement HBaseTablespace::getTableVolume() method
> --------------------------------------------------
>
>                 Key: TAJO-1940
>                 URL: https://issues.apache.org/jira/browse/TAJO-1940
>             Project: Tajo
>          Issue Type: Improvement
>          Components: HBase Storage
>            Reporter: Jihoon Son
>            Assignee: Hyunsik Choi
>             Fix For: 0.12.0, 0.11.1
>
>
> 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, HBaseTablespace doesn't support getTableVolume() method, so our plan is not good when the query involves any HBase tables. 



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