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From "Jesus Camacho Rodriguez (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HIVE-11813) Avoid expensive AST tree conversion to String for expressions in WHERE clause in CBO
Date Tue, 15 Sep 2015 12:54:45 GMT

     [ https://issues.apache.org/jira/browse/HIVE-11813?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Jesus Camacho Rodriguez updated HIVE-11813:
-------------------------------------------
    Attachment: HIVE-11813.01.patch

> Avoid expensive AST tree conversion to String for expressions in WHERE clause in CBO
> ------------------------------------------------------------------------------------
>
>                 Key: HIVE-11813
>                 URL: https://issues.apache.org/jira/browse/HIVE-11813
>             Project: Hive
>          Issue Type: Bug
>          Components: CBO
>    Affects Versions: 2.0.0
>            Reporter: Jesus Camacho Rodriguez
>            Assignee: Jesus Camacho Rodriguez
>         Attachments: HIVE-11813.01.patch, HIVE-11813.patch
>
>
> We use the AST tree String representation of a condition in the WHERE clause to identify
its column in the RowResolver. This can lead to OOM Exceptions when the condition is very
large.



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