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https://issues.apache.org/jira/browse/HADOOP-11804?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15677212#comment-15677212
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Sangjin Lee commented on HADOOP-11804:
--------------------------------------

I'll take a look at it soon. It would be great if there is a reproducible case 
that we can easily replicate the problem.

If it is related with the ServiceLoader, you want to look at the properties 
files from which the ServiceLoader loads classes via reflection (e.g. 
META-INF/services/org.apache.hadoop.fs.FileSystem). The class names in these 
files need to match the actual class names in the jar. If the actual class was 
shaded, the content of these properties files need to be shaded too.

> POC Hadoop Client w/o transitive dependencies
> ---------------------------------------------
>
>                 Key: HADOOP-11804
>                 URL: https://issues.apache.org/jira/browse/HADOOP-11804
>             Project: Hadoop Common
>          Issue Type: Sub-task
>          Components: build
>            Reporter: Sean Busbey
>            Assignee: Sean Busbey
>         Attachments: HADOOP-11804.1.patch, HADOOP-11804.2.patch, 
> HADOOP-11804.3.patch, HADOOP-11804.4.patch, HADOOP-11804.5.patch, 
> HADOOP-11804.6.patch, HADOOP-11804.7.patch, HADOOP-11804.8.patch, 
> HADOOP-11804.9.patch
>
>
> make a hadoop-client-api and hadoop-client-runtime that i.e. HBase can use to 
> talk with a Hadoop cluster without seeing any of the implementation 
> dependencies.
> see proposal on parent for details.



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