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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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Details

    • Sub-task
    • Status: Resolved
    • Major
    • Resolution: Duplicate
    • None
    • HDFS-12943
    • hdfs-client
    • None

    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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          is part of

          Sub-task - The sub-task of the issue HDFS-13779 Implement performFailover logic for ObserverReadProxyProvider.

          • Major - Major loss of function.
          • Resolved

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              vagarychen Chen Liang
              shv Konstantin Shvachko
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              Dates

                Created:
                Updated:
                Resolved: