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https://issues.apache.org/jira/browse/HBASE-5858?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13260111#comment-13260111
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Andrew Purtell commented on HBASE-5858:
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Does it make sense to factor common dependencies and symlink with Puppet in say
the BigTop distro framework Roman?
Since we support multiple versions of Hadoop it's unlikely we can avoid
multiple versions of jars in the class path from tarball distributions.
> When HBase gets executed against Hadoop 2.X "SLF4j:CLASSPATH contains
> multiple SLF4j binding" warning is displayed
> ------------------------------------------------------------------------------------------------------------------
>
> Key: HBASE-5858
> URL: https://issues.apache.org/jira/browse/HBASE-5858
> Project: HBase
> Issue Type: Bug
> Components: scripts
> Affects Versions: 0.92.0, 0.92.1
> Reporter: Roman Shaposhnik
> Assignee: Roman Shaposhnik
> Priority: Minor
>
> Since HBase tries to find locations of the Hadoop jars from the environment
> in certain cases it ends up with extra SLF4j jars coming from Hadoop
> classpath. When that happens "SLF4j:CLASSPATH contains multiple SLF4j
> binding" warning gets displayed.
> The good news here is that the warning is just that -- a warning. The bad
> news is that it seems this issue will be tricky to fix properly. On one hand
> we would like Hadoop itself to give us transitive closure of the set of jar
> files required (computing that in the HBase script is a maintenance
> nightmare). On the other hand that set of jar files could contain some of the
> very same jars shipped with HBase.
> This problem existed for quiet some time. SLF4j is just the first component
> to complain.
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