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

          People

          • Assignee:
            Daryn Sharp
            Reporter:
            Daryn Sharp
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            Dates

            • Created:
              Updated:

              Development