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https://issues.apache.org/jira/browse/HADOOP-2578?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12558167#action_12558167
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stack commented on HADOOP-2578:
-------------------------------

Would adding a test that checked that c.getResource("hbase-default.xml") and 
c.getResource("hbase-site.xml") were non-null in 
HBaseConfiguration(Configuration c) work?

> HBaseConfiguration(Configuration c) constructor shouldn't overwrite passed 
> conf with defaults
> ---------------------------------------------------------------------------------------------
>
>                 Key: HADOOP-2578
>                 URL: https://issues.apache.org/jira/browse/HADOOP-2578
>             Project: Hadoop
>          Issue Type: Bug
>          Components: contrib/hbase
>            Reporter: Thomas Garner
>
> While testing out mapreduce with hbase, in the map portion of a task, the map 
> would try to connect to an hbase master at localhost/127.0.0.1.  The config 
> passed to the hbaseconfiguration contained the necessary hbase configuration 
> information, but I assume was being overwritten by the defaults in the config 
> files during addResource, as commenting out addHbaseResources in the 
> constructor fixed the symptom.  I would expect the configs to be layered on 
> top of each other, e.g. default, then site, then the config passed as a 
> parameter.

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