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https://issues.apache.org/jira/browse/HBASE-11669?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jingcheng Du resolved HBASE-11669.
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Resolution: Duplicate
> The HMaster uses the same port with HRegionServer
> -------------------------------------------------
>
> Key: HBASE-11669
> URL: https://issues.apache.org/jira/browse/HBASE-11669
> Project: HBase
> Issue Type: Bug
> Components: master, regionserver
> Affects Versions: 0.99.0
> Reporter: Jingcheng Du
> Priority: Blocker
>
> HMaster uses the same port with the HRegionServer.
> In the constructor of HMaster, it has to run super(conf, csm) which is
> HRegionServer. In this method, the rpc service is instantiated, and HMaster
> and HRegionServer will use the same rpc configuration. If users start the
> HMaster and HRegionServer in the same server, the error "Address already in
> use" occurs when HRegionServer starts up.
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