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From "Colin Patrick McCabe (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-9164) Add version number and/or library file name to native library for easy tracking
Date Wed, 06 Feb 2013 00:59:14 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-9164?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13572002#comment-13572002
] 

Colin Patrick McCabe commented on HADOOP-9164:
----------------------------------------------

Hi Owen,

I tend to agree with you that {{libhadoop.so}} should have the same version number as the
jars do.  It's just more consistent.  Why don't we open up a separate JIRA just for that?
 It sounds like a small change to you or I, but in reality it involves pulling in the bigtop
people (who rely on the current naming scheme) and a bunch of other folks.

On the other hand, printing out the full path to the library in {{NativeLibraryChecker}} is
just an HDFS-internal issue which we can easily do.  There's no reason why the two changes
should be coupled, and I feel like the request to do so is blocking progress.

It's pretty common to have multiple copies of {{libhadoop.so}} on the same node.  For me personally,
knowing the full path to the library actually being used is much more useful than the library
version number.  Even if we redefine the {{libhadoop.so}} version number to be the same as
the release number, that just means I will have a probably always be set to {{3.0.0-SNAPSHOT}}
or the CDH version number.  I could have known that I was using {{3.0.0-SNAPSHOT}} just by
looking at the name of the jars in my path.
                
> Add version number and/or library file name to native library for easy tracking
> -------------------------------------------------------------------------------
>
>                 Key: HADOOP-9164
>                 URL: https://issues.apache.org/jira/browse/HADOOP-9164
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: native
>    Affects Versions: 2.0.2-alpha
>            Reporter: Binglin Chang
>            Assignee: Binglin Chang
>            Priority: Minor
>         Attachments: HADOOP-9164.v1.patch, HADOOP-9164.v2.patch, HADOOP-9164.v3.patch,
HADOOP-9164.v4.2.patch, HADOOP-9164.v4.patch, HADOOP-9164.v4.patch
>
>


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