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https://issues.apache.org/jira/browse/HADOOP-8745?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13445767#comment-13445767
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Matthias Friedrich commented on HADOOP-8745:
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Thanks for your review! I don't know kfs, but I think there's some confusion
because Hadoop's kfs-0.2.2 uses {{org.kosmix}} as the groupId while kfs-0.3
uses {{net.sf.kosmosfs}} as the groupId. It's the same package though, in Java
they both use the {{org.kosmix}} package name space. It's commented in the ivy
config because kfs-0.2.2 and older aren't available through Maven central. This
is why the lib is checked into svn.
The problem with my patch is that we can't downgrade to kfs-0.2.2 without
causing problems for Maven users. There are three options: 1) leave it at 0.3,
2) deploy kfs 0.2.2 to Maven central, or 3) upgrade Hadoop to use kfs-0.3.
Option 3 sounds like the best but I have no way of testing this (there's no
test case and wiki documentation seems to have moved on to Hadoop 2). It
compiles with some warnings, but whether it actually works is a different
question.
> Incorrect version numbers in hadoop-core POM
> --------------------------------------------
>
> Key: HADOOP-8745
> URL: https://issues.apache.org/jira/browse/HADOOP-8745
> Project: Hadoop Common
> Issue Type: Bug
> Affects Versions: 1.0.3
> Reporter: Matthias Friedrich
> Priority: Minor
> Attachments: HADOOP-8745-branch-1.0.patch
>
>
> The hadoop-core POM as published to Maven central has different dependency
> versions than Hadoop actually has on its runtime classpath. This can lead to
> client code working in unit tests but failing on the cluster and vice versa.
> The following version numbers are incorrect: jackson-mapper-asl, kfs, and
> jets3t. There's also a duplicate dependency to commons-net.
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