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  1. Hadoop Common
  2. HADOOP-2027

FileSystem should provide byte ranges for file locations

    Details

    • Type: Bug
    • Status: Closed
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: 0.17.0
    • Component/s: fs
    • Labels:
      None
    • Hadoop Flags:
      Incompatible change
    • Release Note:
      New FileSystem API getFileBlockLocations to return the number of bytes in each block in a file via a single rpc to the namenode to speed up job planning. Deprecates getFileCacheHints.

      Description

      FileSystem's getFileCacheHints should be replaced with something more useful. I'd suggest replacing getFileCacheHints with a new method:

      BlockLocation[] getFileLocations(Path file, long offset, long range) throws IOException;
      

      and adding

      class BlockLocation implements Writable {
        String[] getHosts();
        long getOffset();
        long getLength();
      }
      

        Attachments

        1. HADOOP-2027-1.patch
          22 kB
          Lohit Vijayarenu
        2. HADOOP-2027-2.patch
          33 kB
          Lohit Vijayarenu
        3. HADOOP-2027-3.patch
          33 kB
          Lohit Vijayarenu
        4. HADOOP-2027-4.patch
          29 kB
          Lohit Vijayarenu
        5. HADOOP-2027-5.patch
          31 kB
          Lohit Vijayarenu
        6. HADOOP-2027-6.patch
          35 kB
          Lohit Vijayarenu
        7. HADOOP-2027-7.patch
          31 kB
          Lohit Vijayarenu
        8. HADOOP-2027-8.patch
          35 kB
          Lohit Vijayarenu
        9. HADOOP-2027-9.patch
          35 kB
          Lohit Vijayarenu
        10. HADOOP-2027-10.patch
          35 kB
          Lohit Vijayarenu
        11. HADOOP-2559-11.patch
          37 kB
          Lohit Vijayarenu
        12. HADOOP-2559-12.patch
          39 kB
          Lohit Vijayarenu
        13. HADOOP-2559-13.patch
          38 kB
          Lohit Vijayarenu
        14. HADOOP-2027-14.patch
          38 kB
          Lohit Vijayarenu

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              • Assignee:
                lohit Lohit Vijayarenu
                Reporter:
                owen.omalley Owen O'Malley
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                Dates

                • Created:
                  Updated:
                  Resolved: