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https://issues.apache.org/jira/browse/CRUNCH-16?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Matthias Friedrich updated CRUNCH-16:
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Attachment: 0001-CRUNCH-16-Fix-dependency-versions.patch
Dependencies for crunch core on Hadoop 1 are OK now. HBase on Hadoop 1 still
has conflicts with Jersey, but I hope the client doesn't need it. There's
nothing we can do about it anyway. As far as I'm concerned, the hadoop-1 build
profile is done.
The conflict between Hadoop 2's avro-1.5.3 and our 1.7.0 is currently unfixed.
I'm not sure what to do about this: Downgrade avro, ignore the problem, or move
avro to a separate maven module (which doesn't really solve the problem
either). Ideas anyone?
> Fix dependency versions
> -----------------------
>
> Key: CRUNCH-16
> URL: https://issues.apache.org/jira/browse/CRUNCH-16
> Project: Crunch
> Issue Type: Task
> Reporter: Matthias Friedrich
> Assignee: Matthias Friedrich
> Priority: Critical
> Labels: maven
> Attachments: 0001-CRUNCH-16-Fix-dependency-versions.patch
>
>
> Right now, the compile time classpath doesn't exactly match the runtime
> classpath. For example, Hadoop CDH3u4 comes with slf4j-api-1.4.3 while Crunch
> references slf4j-api-1.6.3. This could result in NoSuchMethodError and other
> nasty problems.
> We have to make sure that version numbers match (check "mvn dependency:tree")
> and that we don't ship artifacts that are already present on the runtime
> classpath. If our dependencies introduce incompatible transitive
> dependencies, we might have to downgrade them.
> Note: Maven's dependency resolution is order-dependent, see
> http://maven.apache.org/guides/introduction/introduction-to-dependency-mechanism.html
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