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Posted to issues@tajo.apache.org by "Jihoon Son (JIRA)" <ji...@apache.org> on 2016/02/12 04:01:18 UTC
[jira] [Assigned] (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 reassigned TAJO-1939:
--------------------------------
Assignee: Jihoon Son
> 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
>
>
> 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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