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From "Jesus Camacho Rodriguez (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HIVE-11627) Reduce the number of accesses to hashmaps in PPD
Date Tue, 25 Aug 2015 13:58:46 GMT

     [ https://issues.apache.org/jira/browse/HIVE-11627?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Jesus Camacho Rodriguez updated HIVE-11627:
-------------------------------------------
    Summary: Reduce the number of accesses to hashmaps in PPD  (was: Make PPD optimizer run
faster)

> Reduce the number of accesses to hashmaps in PPD
> ------------------------------------------------
>
>                 Key: HIVE-11627
>                 URL: https://issues.apache.org/jira/browse/HIVE-11627
>             Project: Hive
>          Issue Type: Improvement
>          Components: Logical Optimizer
>    Affects Versions: 1.3.0, 2.0.0
>            Reporter: Jesus Camacho Rodriguez
>            Assignee: Jesus Camacho Rodriguez
>         Attachments: HIVE-11627.patch
>
>
> We retrieve the ExprInfo from the hashmap each time we want to change any of its properties.
Instead, the number of calls to the hashmap could be drastically reduced by retrieving the
ExprInfo once, and changing all its properties.



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