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From "Tsuyoshi Ozawa (JIRA)" <j...@apache.org>
Subject [jira] [Comment Edited] (HADOOP-14284) Shade Guava everywhere
Date Tue, 11 Apr 2017 17:11:41 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-14284?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15964651#comment-15964651
] 

Tsuyoshi Ozawa edited comment on HADOOP-14284 at 4/11/17 5:10 PM:
------------------------------------------------------------------

v7 patch includes following changes:

* Created hadoop-shaded-thirdparty which includes shaded guava. It, however, doesn't include
com.google.common.base.Function, Predicate, and TypeToken. It's because the classes are required
to use Apache Curator: https://cwiki.apache.org/confluence/display/CURATOR/TN13
* Changed namespaces of Guava to use shaded Guava under org.apache.hadoop.com.google.common.
This change subsume what HADOOP-14238 is addressing.



was (Author: ozawa):
v7 patch includes following changes:

* hadoop-shaded-thirdparty includes shaded guava, but it doesn't include com.google.common.base.Function,
Predicate, and TypeToken. They are required to use Apache Curator: https://cwiki.apache.org/confluence/display/CURATOR/TN13
* Changed namespaces of Guava to use shaded Guava under org.apache.hadoop.com.google.common.
This change subsume what HADOOP-14238 is addressing.


> 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-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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