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  1. Hadoop HDFS
  2. HDFS-3601

Implementation of ReplicaPlacementPolicyNodeGroup to support 4-layer network topology

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    Details

    • Type: New Feature
    • Status: Closed
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: 1.2.0, 2.1.0-beta
    • Component/s: namenode
    • Labels:
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      Description

      A subclass of ReplicaPlacementPolicyDefault, ReplicaPlacementPolicyNodeGroup was developed along with unit tests to support the four-layer hierarchical topology.
      The replica placement strategy used in ReplicaPlacementPolicyNodeGroup virtualization is almost the same as the original one. The differences are:
      1. The 3rd replica will be off node group of the 2nd replica
      2. If there is no local node available, the 1st replica will be placed on a node in the local node group.

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              • Assignee:
                djp Junping Du
                Reporter:
                djp Junping Du
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                • Created:
                  Updated:
                  Resolved: