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https://issues.apache.org/jira/browse/HDFS-10687?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Inigo Goiri updated HDFS-10687:
-------------------------------
    Description: 
The Federation Membership State encapsulates the information about the 
Namenodes of each sub-cluster that are participating in Federation. The 
information includes addresses for RPC, Web. This information is stored in the 
State Store and later used by the Router to find data in the federation.


  was:Service that monitors a Namenode and stores its state in the State Store. 
This information is later used by the Router to find data in the federation.


> Federation Membership State Store internal APIs
> -----------------------------------------------
>
>                 Key: HDFS-10687
>                 URL: https://issues.apache.org/jira/browse/HDFS-10687
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: fs
>            Reporter: Inigo Goiri
>
> The Federation Membership State encapsulates the information about the 
> Namenodes of each sub-cluster that are participating in Federation. The 
> information includes addresses for RPC, Web. This information is stored in 
> the State Store and later used by the Router to find data in the federation.



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