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From "Tsz Wo (Nicholas), SZE (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HADOOP-5052) Add an example for computing exact digits of Pi
Date Thu, 12 Feb 2009 00:55:59 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-5052?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Tsz Wo (Nicholas), SZE updated HADOOP-5052:
-------------------------------------------

    Attachment: 5052_20090211.patch

5052_20090211.patch:
- Defined a new InputFormat instead of using default (thanks Chris again for showing me how
to do it).
- Improved 20% performance.
- Added unit tests.
- Checked the results for the first 1 million digits and all 10^k th digits which supported
by the implementation.


> Add an example for computing exact digits of Pi
> -----------------------------------------------
>
>                 Key: HADOOP-5052
>                 URL: https://issues.apache.org/jira/browse/HADOOP-5052
>             Project: Hadoop Core
>          Issue Type: New Feature
>          Components: examples
>            Reporter: Tsz Wo (Nicholas), SZE
>            Assignee: Tsz Wo (Nicholas), SZE
>         Attachments: 5052_20090115_0.18.patch, 5052_20090117_0.18.patch, 5052_20090127.patch,
5052_20090203.patch, 5052_20090211.patch
>
>
> It would be useful to add an example showing how to use Hadoop to do scientific computing.
 We should add an example for computing exact digits of Pi.

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