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  1. Hadoop HDFS
  2. HDFS-1405

Make FSVolumeSet in FSDataSet pluggable

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    Details

    • Type: Improvement
    • Status: Resolved
    • Priority: Major
    • Resolution: Won't Fix
    • Affects Version/s: 0.22.0
    • Fix Version/s: None
    • Component/s: datanode
    • Labels:
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      Description

      I am trying to submit a patch for HDFS-1362, which enable online add or remove a volume of a serving DataNode.

      I managed to create the patch avoiding modify exist class, but FSVolumeSet is an exception, the member "volumes" is an array, while I need a List to facilitate the hotplug procedure. Thus I have 2 possible solutions:

      • Provide a abstract class as its super class, with the definition of all its methods. OR
      • Modify the volumes' definition in FSVolumeSet, as a Gereral Type Collection<>, which may use different implementation in subclasses.

      I will supply a patch for the first method for review

        Attachments

        1. HDFS-1405v3.txt
          14 kB
          Wang Xu
        2. HDFS-1405v2.txt
          8 kB
          Wang Xu
        3. HDFS-1405.txt
          7 kB
          Wang Xu

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              • Assignee:
                gnawux Wang Xu
                Reporter:
                gnawux Wang Xu
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                • Created:
                  Updated:
                  Resolved: