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Posted to hdfs-dev@hadoop.apache.org by "Konstantin Shvachko (JIRA)" <ji...@apache.org> on 2018/08/01 23:19:00 UTC

[jira] [Created] (HDFS-13780) Postpone NameNode state discovery in ObserverReadProxyProvider until the first real RPC call.

Konstantin Shvachko created HDFS-13780:
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             Summary: Postpone NameNode state discovery in ObserverReadProxyProvider until the first real RPC call.
                 Key: HDFS-13780
                 URL: https://issues.apache.org/jira/browse/HDFS-13780
             Project: Hadoop HDFS
          Issue Type: Sub-task
          Components: hdfs-client
            Reporter: Konstantin Shvachko


Currently {{ObserverReadProxyProvider}} during instantiation discovers Observers by poking known NameNodes and checking their states. This rather expensive process can be postponed until the first actual RPC call. 



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