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https://issues.apache.org/jira/browse/HADOOP-14284?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16139568#comment-16139568
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Tsuyoshi Ozawa commented on HADOOP-14284:
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In summary, the Guava's problem is caused by the usages of HDFS's internal
interface by downstream projects. Hence, we will have an effort for urging
downstream project to use the shaded client instead. Is this correct?
Can we think the same way about protobuf problem?
> 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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