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  1. Hadoop HDFS
  2. HDFS-6221

Webhdfs should recover from dead DNs

    Details

    • Type: Bug
    • Status: Resolved
    • Priority: Major
    • Resolution: Not A Problem
    • Affects Version/s: 2.0.0-alpha, 3.0.0-alpha1
    • 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).

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            • Assignee:
              daryn Daryn Sharp
              Reporter:
              daryn Daryn Sharp
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              • Created:
                Updated:
                Resolved: