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  1. Hadoop HDFS
  2. HDFS-12943 Consistent Reads from Standby Node
  3. HDFS-13780

Postpone NameNode state discovery in ObserverReadProxyProvider until the first real RPC call.

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    • Type: Sub-task
    • Status: Resolved
    • Priority: Major
    • Resolution: Duplicate
    • Affects Version/s: None
    • Fix Version/s: HDFS-12943
    • Component/s: hdfs-client
    • Labels:
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      Description

      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.
      This is an optimization.

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              • Assignee:
                vagarychen Chen Liang
                Reporter:
                shv Konstantin Shvachko
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                • Created:
                  Updated:
                  Resolved: