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From "Todd Lipcon (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-7445) Implement bulk checksum verification using efficient native code
Date Thu, 14 Jul 2011 22:29:59 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-7445?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13065577#comment-13065577
] 

Todd Lipcon commented on HADOOP-7445:
-------------------------------------

I wanted to put them in a different file, but also wanted to make sure they got inlined. Though
they're only used by this bit of code, I could imagine in the future wanting to be able to
re-use them from other code (eg to implement a native block reader as part of libhdfs)

If you don't think a separate file is necessary, happy to just inline the contents of those
files into the main code.

> Implement bulk checksum verification using efficient native code
> ----------------------------------------------------------------
>
>                 Key: HADOOP-7445
>                 URL: https://issues.apache.org/jira/browse/HADOOP-7445
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: native, util
>            Reporter: Todd Lipcon
>            Assignee: Todd Lipcon
>         Attachments: hadoop-7445.txt, hadoop-7445.txt
>
>
> Once HADOOP-7444 is implemented ("bulk" API for checksums), good performance gains can
be had by implementing bulk checksum operations using JNI. This JIRA is to add checksum support
to the native libraries. Of course if native libs are not available, it will still fall back
to the pure-Java implementations.

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