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Date: Tue, 16 Aug 2016 08:28:22 +0000 (UTC)
From: "Ron Hu (JIRA)" <jira@apache.org>
To: issues@spark.apache.org
Message-ID: <JIRA.12980331.1466202554000.314675.1471336102893@Atlassian.JIRA>
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Subject: [jira] [Updated] (SPARK-16026) Cost-based Optimizer framework
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archived-at: Tue, 16 Aug 2016 08:28:30 -0000


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

Ron Hu updated SPARK-16026:
---------------------------
    Attachment:     (was: Spark_CBO_Design_Spec_v_1_2.pdf)

> 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.


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