Uploaded image for project: 'Hadoop Common'
  1. Hadoop Common
  2. HADOOP-2656

Support for upgrading existing cluster to facilitate appends to HDFS files


    • Type: Bug
    • Status: Closed
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: 0.18.0
    • Component/s: None
    • Labels:
    • Hadoop Flags:
      Incompatible change, Reviewed
    • Release Note:
      Associated a generation stamp with each block. On data nodes, the generation stamp is stored as part of the file name of the block's meta-data file.


      HADOOP-1700 describes the design for supporting appends to HDFS files. This design requires a distributed-upgrade to existing cluster installations. The design specifies that the DataNode persist the 8-byte BlockGenerationStamp in the block metadata file. The upgrade code will introduce this new field in the block metadata file and initialize this value to 0.


        1. upgradeGenStamp9.patch
          110 kB
          dhruba borthakur
        2. upgradeGenStamp9.patch
          111 kB
          dhruba borthakur
        3. upgradeGenStamp8.patch
          110 kB
          dhruba borthakur
        4. upgradeGenStamp7.patch
          110 kB
          dhruba borthakur
        5. upgradeGenStamp6.patch
          109 kB
          dhruba borthakur
        6. upgradeGenStamp5.patch
          109 kB
          dhruba borthakur
        7. upgradeGenStamp4.patch
          98 kB
          dhruba borthakur
        8. upgradeGenStamp12.patch
          107 kB
          dhruba borthakur
        9. upgradeGenStamp11.patch
          108 kB
          dhruba borthakur
        10. upgradeGenStamp10.patch
          108 kB
          dhruba borthakur
        11. upgradeGenStamp.patch
          44 kB
          dhruba borthakur

          Issue Links



              • Assignee:
                dhruba dhruba borthakur
                dhruba dhruba borthakur
              • Votes:
                0 Vote for this issue
                1 Start watching this issue


                • Created: