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https://issues.apache.org/jira/browse/HADOOP-14284?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16126259#comment-16126259
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Haibo Chen commented on HADOOP-14284:
-------------------------------------
Thanks @stack for the insight on HBase's solution. Does HBase shade across all
code base, instead of just in client modules?
bq. Downside is having to be sure we always refer to the relocated versions in
code.
Seems like maven enforcer can ban the unwanted non-relocated dependencies,
manageable if provided that we are willing to reference the relocated versions
in both server and client modules. If this does work, It seems to me that
shading both server and client modules would be beneficial in the long run from
maintenance point of view, even though what downstream projects need is only
shaded clients. Thoughts?
Does this approach address all of your concerns, [~djp]?
> Shade Guava everywhere
> ----------------------
>
> Key: HADOOP-14284
> URL: https://issues.apache.org/jira/browse/HADOOP-14284
> Project: Hadoop Common
> Issue Type: Bug
> Components: build
> Affects Versions: 3.0.0-alpha4
> Reporter: Andrew Wang
> Assignee: Tsuyoshi Ozawa
> Priority: Blocker
> Attachments: HADOOP-14238.pre001.patch, HADOOP-14284.002.patch,
> HADOOP-14284.004.patch, HADOOP-14284.007.patch, HADOOP-14284.010.patch,
> HADOOP-14284.012.patch
>
>
> HADOOP-10101 upgraded the guava version for 3.x to 21.
> Guava is broadly used by Java projects that consume our artifacts.
> Unfortunately, these projects also consume our private artifacts like
> {{hadoop-hdfs}}. They also are unlikely on the new shaded client introduced
> by HADOOP-11804, currently only available in 3.0.0-alpha2.
> We should shade Guava everywhere to proactively avoid breaking downstreams.
> This isn't a requirement for all dependency upgrades, but it's necessary for
> known-bad dependencies like Guava.
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