[jira] [Created] (HDFS-14017) ObserverReadProxyProviderWithIPFailover does not quite work

["Chen Liang (JIRA)" <ji...@apache.org>]

Chen Liang created HDFS-14017:
---------------------------------

             Summary: 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


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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