Hadoop HDFS
  1. Hadoop HDFS
  2. HDFS-1520

HDFS 20 append: Lightweight NameNode operation to trigger lease recovery

    Details

    • Type: New Feature New Feature
    • Status: Closed
    • Priority: Major Major
    • Resolution: Fixed
    • Affects Version/s: 0.20-append
    • Fix Version/s: 0.20-append, 0.20.205.0
    • Component/s: namenode
    • Labels:
      None
    • Hadoop Flags:
      Reviewed

      Description

      Currently HBase uses append to trigger the close of HLog during Hlog split. Append is a very expensive operation, which involves not only NameNode operations but creating a writing pipeline. If one of datanodes on the pipeline has a problem, this recovery may takes minutes. I'd like implement a lightweight NameNode operation to trigger lease recovery and make HBase to use this instead.

      1. recoverLeaseApache20.patch
        19 kB
        Hairong Kuang
      2. HDFS-1520.20-security.1.patch
        20 kB
        Jitendra Nath Pandey

        Issue Links

          Activity

          No work has yet been logged on this issue.

            People

            • Assignee:
              Hairong Kuang
              Reporter:
              Hairong Kuang
            • Votes:
              1 Vote for this issue
              Watchers:
              5 Start watching this issue

              Dates

              • Created:
                Updated:
                Resolved:

                Development