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  1. Hadoop HDFS
  2. HDFS-5453

Support fine grain locking in FSNamesystem

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    Details

    • Type: New Feature
    • Status: Open
    • Priority: Major
    • Resolution: Unresolved
    • Affects Version/s: 2.0.0-alpha, 3.0.0-alpha1
    • Fix Version/s: None
    • Component/s: namenode
    • Labels:
      None
    • Target Version/s:

      Description

      The namesystem currently uses a course grain lock to control access. This prevents concurrent writers in different branches of the tree, and prevents readers from accessing branches that writers aren't using.

      Features that introduce latency to namesystem operations, such as cold storage of inodes, will need fine grain locking to avoid degrading the entire namesystem's throughput.

        Attachments

        1. async_simulation.xlsx
          57 kB
          Edward Bortnikov

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              • Assignee:
                daryn Daryn Sharp
                Reporter:
                daryn Daryn Sharp
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                Dates

                • Created:
                  Updated: