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https://issues.apache.org/jira/browse/HDFS-14017?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Chen Liang updated HDFS-14017:
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    Attachment:     (was: HDFS-14017-HDFS-12943.001.patch)

> ObserverReadProxyProviderWithIPFailover does not quite work
> -----------------------------------------------------------
>
>                 Key: HDFS-14017
>                 URL: https://issues.apache.org/jira/browse/HDFS-14017
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>            Reporter: Chen Liang
>            Assignee: Chen Liang
>            Priority: Major
>
> Currently {{ObserverReadProxyProviderWithIPFailover}} extends 
> {{ObserverReadProxyProvider}}, and the only difference is changing the proxy 
> factory to use {{IPFailoverProxyProvider}}. However this is not enough 
> because when calling constructor of {{ObserverReadProxyProvider}} in 
> super(...), the follow line:
> {code}
> nameNodeProxies = getProxyAddresses(uri,
>         HdfsClientConfigKeys.DFS_NAMENODE_RPC_ADDRESS_KEY);
> {code}
> will try to resolve the all configured NN addresses to do configured 
> failover. But in the case of IPFailover, this does not really apply. 



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