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  1. Hadoop Common
  2. HADOOP-487

misspelt DFS host name gives null pointer exception in getProtocolVersion

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Details

    • Improvement
    • Status: Closed
    • Major
    • Resolution: Fixed
    • 0.6.2
    • 0.7.0
    • None
    • None

    Description

      I'm trying to construct a DistributedFileSystem but I have the wrong hostname.

      It doesn't work. It throws an exception. Fair enough.

      However, it throws a null pointer exception inside $Proxy0.getProtocolVersion, the code that checks whether we have the right protocol version, rather than giving us any exception we could understand or taking an exception in code to which we have sources so we have a way of understanding the problem.

      -dk

      Attachments

        1. unknown-host.txt
          1 kB
          Sameer Paranjpye

        Issue Links

          is related to

          Bug - A problem which impairs or prevents the functions of the product. HADOOP-15129 Datanode caches namenode DNS lookup failure and cannot startup

          • Minor - Minor loss of function, or other problem where easy workaround is present.
          • Resolved

          Activity

            People

              sameerp Sameer Paranjpye
              dking Dick King
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              Dates

                Created:
                Updated:
                Resolved: