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From "Allen Wittenauer (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-8255) add hadoop-tools to the classpath
Date Fri, 06 Apr 2012 22:50:16 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-8255?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13249020#comment-13249020
] 

Allen Wittenauer commented on HADOOP-8255:
------------------------------------------

bq. Historically (from what I was told) these were not in the classpath because there existed
other version of these tools that users wanted to run and hence did not want the hadoop tools
to be in the classpath by default. Is that still true today? 

Yes.

distcp is the big one.  We definitely run a custom version as do many other people.  Additionally,
at least in 0.20.2, there isn't much of a reason to include them in the CLASSPATH:

* distcp
* distch
* har creation
* logalyzer (which I don't even know what that is)

all seem pretty non-fundamental to me.

Looking at 1.x, I still see a lot of non-fundamental bits that most people just really don't
need. 
                
> add hadoop-tools to the classpath
> ---------------------------------
>
>                 Key: HADOOP-8255
>                 URL: https://issues.apache.org/jira/browse/HADOOP-8255
>             Project: Hadoop Common
>          Issue Type: Bug
>            Reporter: John George
>            Assignee: John George
>            Priority: Minor
>
> As of today, none of the components in hadoop tools is in the classpath. Historically
(from what I was told) these were not in the classpath because there existed other version
of these tools that users wanted to run and hence did not want the hadoop tools to be in the
classpath by default. Is that still true today? 
> Also, if users do want to add their own hadoop tools to the classpath, there are other
ways to ensure that the user's classpath is picked up before hadoop's classpath. 
> So, if there are no other reasons, can we add hadoop tools to the classpath? Or am I
missing something?

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