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https://issues.apache.org/jira/browse/HBASE-4522?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13118312#comment-13118312
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Mikhail Bautin commented on HBASE-4522:
---------------------------------------
Discussed this with Liyin. To clarify Liyin's point above: in our setup, we
have multiple clusters per application, and hbase-site.xml works as the
application-specific configuration, while hbase-site-custom.xml is the
cluster-specific configuration within a particular application. So in our case
hbase-site.xml does not hard-code any host names. The reason we cannot use
hbase-default.xml for application-specific configuration is that there is
already an hbase-default.xml file in the HBase jar, and overriding it would
make us dependent on the relative ordering of HBase configuration directory and
the HBase jar in the classpath, which is an unnecessarily brittle approach.
With the hbase-site-custom.xml file, however, we get additional flexibility in
configuring our HBase clusters without breaking backwards-compatibility. If the
hbase-site-custom.xml file is not there, everything will function exactly as
before.
> Make hbase-site-custom.xml override the hbase-site.xml
> ------------------------------------------------------
>
> Key: HBASE-4522
> URL: https://issues.apache.org/jira/browse/HBASE-4522
> Project: HBase
> Issue Type: Improvement
> Reporter: Mikhail Bautin
> Assignee: Liyin Tang
> Priority: Minor
> Fix For: 0.94.0
>
>
> The motivation for diff is that we want to override some config change for
> any specific cluster easily by just adding the config entries in the
> hbase-site-custom.xml for that cluster. This change adds the
> hbase-site-custom.xml configuration file into HBaseConfiguration.
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