Details

    • Type: Sub-task
    • Status: Resolved
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: 2.8.0, 3.0.0-alpha1
    • Component/s: datanode
    • Labels:
      None
    • Target Version/s:
    • Hadoop Flags:
      Reviewed
    • Release Note:
      This change requires setting the dfs.datanode.max.locked.memory configuration key to use the HDFS Lazy Persist feature. Its value limits the combined off-heap memory for blocks in RAM via caching and lazy persist writes.

      Description

      Per discussion on HDFS-6919, the first step is that writes to RAM disk will reserve locked memory via the FsDatasetCache.

        Attachments

        1. HDFS-8157.01.patch
          47 kB
          Arpit Agarwal
        2. HDFS-8157.02.patch
          45 kB
          Arpit Agarwal
        3. HDFS-8157.03.patch
          45 kB
          Arpit Agarwal
        4. HDFS-8157.04.patch
          49 kB
          Arpit Agarwal

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              • Assignee:
                arpitagarwal Arpit Agarwal
                Reporter:
                arpitagarwal Arpit Agarwal
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                Dates

                • Created:
                  Updated:
                  Resolved: