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From "Tsz Wo (Nicholas), SZE (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HADOOP-6166) Improve PureJavaCrc32
Date Wed, 19 Aug 2009 21:15:15 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-6166?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Tsz Wo (Nicholas), SZE updated HADOOP-6166:
-------------------------------------------

    Attachment: c6166_20090819review.patch

c6166_20090819review.patch: patch for reviewing.

- replaced PureJavaCrc32 implementation with 8_8d
- updated TestPureJavaCrc32 to junit 4
- added TestPureJavaCrc32.Table
- changed TestPureJavaCrc32.PerformanceTest to print system information

> Improve PureJavaCrc32
> ---------------------
>
>                 Key: HADOOP-6166
>                 URL: https://issues.apache.org/jira/browse/HADOOP-6166
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: util
>            Reporter: Tsz Wo (Nicholas), SZE
>            Assignee: Tsz Wo (Nicholas), SZE
>         Attachments: c6166_20090722.patch, c6166_20090722_benchmark_32VM.txt, c6166_20090722_benchmark_64VM.txt,
c6166_20090727.patch, c6166_20090728.patch, c6166_20090810.patch, c6166_20090811.patch, c6166_20090819.patch,
c6166_20090819review.patch, graph.r, graph.r, Rplots-laptop.pdf, Rplots-nehalem32.pdf, Rplots-nehalem64.pdf,
Rplots.pdf, Rplots.pdf, Rplots.pdf
>
>
> Got some ideas to improve CRC32 calculation.

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