Uploaded image for project: 'Hadoop HDFS'
  1. Hadoop HDFS
  2. HDFS-265 Revisit append
  3. HDFS-570

When opening a file for read, make the file length avaliable to client.

    Details

    • Type: Sub-task
    • Status: Resolved
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: Append Branch
    • Fix Version/s: Append Branch
    • Component/s: hdfs-client
    • Labels:
      None
    • Hadoop Flags:
      Incompatible change, Reviewed
    • Release Note:
      In order to support read consistency, get last block length from a data-node when opening a file being written to.

      Description

      In order to support read consistency, DFSClient needs the file length at the file opening time. In the current implmentation, DFSClient obtains the file length at the file opening time but the length is inaccurate if the file is being written.

      For more details, see Section 4 in the append design doc.

        Attachments

        1. h570_20090926.patch
          26 kB
          Konstantin Shvachko
        2. h570_20090926.patch
          26 kB
          Konstantin Shvachko
        3. h570_20090925c.patch
          27 kB
          Tsz Wo Nicholas Sze
        4. h570_20090925b.patch
          25 kB
          Tsz Wo Nicholas Sze
        5. h570_20090925.patch
          23 kB
          Tsz Wo Nicholas Sze
        6. h570_20090924.patch
          17 kB
          Tsz Wo Nicholas Sze
        7. h570_20090922.patch
          15 kB
          Tsz Wo Nicholas Sze
        8. h570_20090828.patch
          25 kB
          Tsz Wo Nicholas Sze

          Issue Links

            Activity

              People

              • Assignee:
                szetszwo Tsz Wo Nicholas Sze
                Reporter:
                szetszwo Tsz Wo Nicholas Sze
              • Votes:
                0 Vote for this issue
                Watchers:
                5 Start watching this issue

                Dates

                • Created:
                  Updated:
                  Resolved: