[jira] [Issue Comment Deleted] (SPARK-16026) Cost-based Optimizer framework

["Ron Hu (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SPARK-16026?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Ron Hu updated SPARK-16026:
---------------------------
    Comment: was deleted

(was: Design Specification of Spark Cost-Based Optimization)

> Cost-based Optimizer framework
> ------------------------------
>
>                 Key: SPARK-16026
>                 URL: https://issues.apache.org/jira/browse/SPARK-16026
>             Project: Spark
>          Issue Type: New Feature
>          Components: SQL
>            Reporter: Reynold Xin
>         Attachments: Spark_CBO_Design_Spec_v_1_2.pdf
>
>
> This is an umbrella ticket to implement a cost-based optimizer framework beyond broadcast join selection. This framework can be used to implement some useful optimizations such as join reordering.
> The design should discuss how to break the work down into multiple, smaller logical units. For example, changes to statistics class, system catalog, cost estimation/propagation in expressions, cost estimation/propagation in operators can be done in decoupled pull requests.



--
This message was sent by Atlassian JIRA
(v6.3.4#6332)

---------------------------------------------------------------------
To unsubscribe, e-mail: issues-unsubscribe@spark.apache.org
For additional commands, e-mail: issues-help@spark.apache.org