You are viewing a plain text version of this content. The canonical link for it is here.

Posted to issues@hive.apache.org by "Mostafa Mokhtar (JIRA)" <ji...@apache.org> on 2015/03/27 23:55:53 UTC

[jira] [Updated] (HIVE-10123) Hybrid grace Hash join : Use estimate key count from stats to initialize BytesBytesMultiHashMap

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

Mostafa Mokhtar updated HIVE-10123:
-----------------------------------
    Attachment: HIVE-10123.01.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.



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