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Posted to dev@hive.apache.org by "Zheng Shao (JIRA)" <ji...@apache.org> on 2009/05/27 23:09:45 UTC

[jira] Assigned: (HIVE-511) Change the hashcode for DoubleWritable

     [ https://issues.apache.org/jira/browse/HIVE-511?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Zheng Shao reassigned HIVE-511:
-------------------------------

    Assignee: Zheng Shao

> Change the hashcode for DoubleWritable
> --------------------------------------
>
>                 Key: HIVE-511
>                 URL: https://issues.apache.org/jira/browse/HIVE-511
>             Project: Hadoop Hive
>          Issue Type: Bug
>    Affects Versions: 0.4.0
>            Reporter: Zheng Shao
>            Assignee: Zheng Shao
>             Fix For: 0.4.0
>
>         Attachments: HIVE-511.1.patch, HIVE-511.2.patch
>
>
> The current DoubleWritable hashCode takes only the last 32 bits. This is a big problem because for small integer values like 1.0, 2.0, 15.0, the hashCode are all 0.

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