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  1. Hadoop Common
  2. HADOOP-4539

Streaming Edits to a Backup Node.

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Details

    • New Feature
    • Status: Closed
    • Major
    • Resolution: Fixed
    • None
    • 0.21.0
    • None
    • None
    • Incompatible change, Reviewed
    • Introduced backup node which maintains the up-to-date state of the namespace by receiving edits from the namenode, and checkpoint node, which creates checkpoints of the name space. These facilities replace the secondary namenode.

    Description

      Currently Secondary name-node acts as mere checkpointer.
      Secondary name-node should be transformed into a standby name-node (SNN).
      The long term goal is to make it a warm standby.
      The purpose of this issue is to provide real time streaming of edits to SNN so that it contained the up-to-date namespace state.

      Attachments

        1. BackupNode.patch
          183 kB
          Konstantin Shvachko
        2. BackupNode.patch
          183 kB
          Konstantin Shvachko
        3. BackupNode.patch
          183 kB
          Konstantin Shvachko
        4. BackupNode.patch
          177 kB
          Konstantin Shvachko
        5. BackupNode.patch
          177 kB
          Konstantin Shvachko
        6. StreamEditsToBN.pdf
          67 kB
          Konstantin Shvachko
        7. BackupNode.patch
          163 kB
          Konstantin Shvachko
        8. image001.gif
          8 kB
          Konstantin Shvachko
        9. StreamEditsToSNN.htm
          31 kB
          Konstantin Shvachko

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              Updated:
              Resolved:

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