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https://issues.apache.org/jira/browse/HADOOP-14284?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16005371#comment-16005371
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Haohui Mai commented on HADOOP-14284:
-------------------------------------
Upgrading guava would help us a lot as many of our internal users (tens of
teams) have been using Guava 21. Because many of them are on the Apache
ecosystem (Hadoop / Spark / Flink / Hive / etc.), accommodating guava 11 and 21
is definitely not fun.
I'm more align with [~steve_l], it looks to me that shading Guava is a step
forward instead of a step backward.
To [~djp]'s concerns -- I think it can be largely addressed by improving our
POMs to automate the process. Thoughts?
> 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-alpha3
> 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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