Uploaded image for project: 'Hadoop Common'
  1. Hadoop Common
  2. HADOOP-106

Data blocks should be record-oriented.

    Details

    • Type: Wish
    • Status: Closed
    • Priority: Major
    • Resolution: Won't Fix
    • Affects Version/s: 0.2.0
    • Fix Version/s: None
    • Component/s: None
    • Labels:
      None

      Description

      If data blocks were starting and ending on data record boundaries, and not in random places within a file, it would give some important advantages:

      • it would be possible to avoid "fishing" for the beginning of first record in a split (see SequenceFile.Reader.sync()).
      • it would make recovering from DFS errors much more successful and easier - in most cases missing blocks could be just skipped and the remaining parts combined together.

        Attachments

          Issue Links

            Activity

              People

              • Assignee:
                sameerp Sameer Paranjpye
                Reporter:
                ab Andrzej Bialecki
              • Votes:
                2 Vote for this issue
                Watchers:
                1 Start watching this issue

                Dates

                • Created:
                  Updated:
                  Resolved: