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From "Mostafa Mokhtar (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HIVE-10123) Hybrid grace Hash join : Use estimate key count from stats to initialize BytesBytesMultiHashMap
Date Tue, 31 Mar 2015 04:31:53 GMT

     [ https://issues.apache.org/jira/browse/HIVE-10123?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Mostafa Mokhtar updated HIVE-10123:
-----------------------------------
    Attachment:     (was: HIVE-10123.02.patch)

> Hybrid grace Hash join : Use estimate key count from stats to initialize BytesBytesMultiHashMap
> -----------------------------------------------------------------------------------------------
>
>                 Key: HIVE-10123
>                 URL: https://issues.apache.org/jira/browse/HIVE-10123
>             Project: Hive
>          Issue Type: Bug
>          Components: Hive
>    Affects Versions: 1.2.0
>            Reporter: Mostafa Mokhtar
>            Assignee: Mostafa Mokhtar
>             Fix For: 1.2.0
>
>         Attachments: HIVE-10123.01.patch
>
>
> Hybrid grace Hash join is not using estimated number of rows from the statistics to initialize
BytesBytesMultiHashMap. 
> Add some logging to BytesBytesMultiHashMap to track get probes and use msec for expandAndRehash
as us overflow.



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