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https://issues.apache.org/jira/browse/BIGTOP-316?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13176874#comment-13176874
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Bruno Mahé edited comment on BIGTOP-316 at 12/28/11 11:12 PM:
--------------------------------------------------------------

Matt, I believe Roman was aiming at contributors being able to mix and match 
versions, not really users. I don't see how users would be able to do so and I 
personnaly see Bigtop as a coherent stack instead of a kit to build stacks 
(although nothing prevent anyone from selecting their own favourite downstream 
versions).
Even if Bigtop components would not specify any dependencies, there would still 
be some work needed to make sure components compile against each others (for 
instance, doing a maven build on hbase, would pull hadoop from its default 
profile, not the one we want to exercise, so the way a component is built may 
have to be tweaked) as well as testing their integration.
But mix-matching is only one of many benefits of such proposal.

                
      was (Author: bmahe):
    Matt, I believe Roman was aiming at contributors being able to mix and 
match versions, not really users. I don't see how users would be able to do so 
and I personnaly see Bigtop as a coherent stack instead of a kit to build 
stacks (although nothing prevent anyone from selecting their own favourite 
downstream versions).
Even if Bigtop would not specify any version in its dependencies sections, 
there would still be  work needed to make sure components compile against each 
others (for instance, doing a maven build on hbase, would pull hadoop from its 
default profile, not the one we want to exercise, so the way a component is 
built may have to be tweaked) as well as testing their integration.
But mix-matching is only one of many benefits of such proposal.

                  
> split up hadoop packages into common, hdfs, mapreduce (and yarn)
> ----------------------------------------------------------------
>
>                 Key: BIGTOP-316
>                 URL: https://issues.apache.org/jira/browse/BIGTOP-316
>             Project: Bigtop
>          Issue Type: Sub-task
>          Components: General
>            Reporter: Roman Shaposhnik
>            Assignee: Roman Shaposhnik
>             Fix For: 0.3.0
>
>


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