Hadoop HDFS
  1. Hadoop HDFS
  2. HDFS-6221

Webhdfs should recover from dead DNs

    Details

    • Type: Bug Bug
    • Status: Open
    • Priority: Major Major
    • Resolution: Unresolved
    • Affects Version/s: 2.0.0-alpha, 3.0.0
    • Fix Version/s: None
    • Component/s: datanode, webhdfs
    • Labels:
      None
    • Target Version/s:

      Description

      We've repeatedly observed the jetty acceptor thread silently dying in the DNs. The webhdfs servlet may also "disappear" and jetty returns non-json 404s.

      One approach to make webhdfs more resilient to bad DNs is dfsclient-like fetching of block locations to directly access the DNs instead of relying on a NN redirect that may repeatedly send the client to the same faulty DN(s).

        Activity

        Daryn Sharp created issue -
        Karthik Kambatla (Inactive) made changes -
        Field Original Value New Value
        Target Version/s 3.0.0, 2.5.0 [ 12320356, 12326264 ] 2.6.0 [ 12327181 ]
        Vinod Kumar Vavilapalli made changes -
        Target Version/s 2.6.0 [ 12327181 ] 2.8.0 [ 12329057 ]

          People

          • Assignee:
            Daryn Sharp
            Reporter:
            Daryn Sharp
          • Votes:
            0 Vote for this issue
            Watchers:
            7 Start watching this issue

            Dates

            • Created:
              Updated:

              Development