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  1. Hadoop HDFS
  2. HDFS-2802 Support for RW/RO snapshots in HDFS
  3. HDFS-4908

Reduce snapshot inode memory usage

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Details

    • Sub-task
    • Status: Closed
    • Major
    • Resolution: Fixed
    • None
    • 2.1.0-beta
    • namenode, snapshots
    • None
    • Reviewed

    Description

      Snapshots currently use INodeFile and INodeDirectory for storing previous file/dir states as snapshot inodes. However, INodeFile and INodeDirectory have some fields not used by snapshot inodes such as parent reference, inode id, block/children reference. The memory footprint could be reduced by having some specific classes for snapshot inodes.

      Attachments

        1. editsStored
          4 kB
          Tsz-wo Sze
        2. h4908_20130617.patch
          45 kB
          Tsz-wo Sze
        3. h4908_20130617b.patch
          51 kB
          Tsz-wo Sze
        4. h4908_20130617c.patch
          51 kB
          Tsz-wo Sze
        5. h4908_20130619.patch
          51 kB
          Tsz-wo Sze
        6. h4908_20130620.patch
          51 kB
          Tsz-wo Sze

        Activity

          People

            szetszwo Tsz-wo Sze
            szetszwo Tsz-wo Sze
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            Dates

              Created:
              Updated:
              Resolved: