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  1. Hadoop Common
  2. HADOOP-1634

EC2 launch-hadoop-cluster awk Problem

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Details

    • Bug
    • Status: Closed
    • Minor
    • Resolution: Fixed
    • 0.13.0
    • 0.14.0
    • contrib/cloud
    • None
    • ec2-api-tools-1.2-11797

    Description

      With Amazon 'ec2-api-tools-1.2-11797' and Hadoop 0.13.0 the output from ec2-describe-instances is being incorrectly AWK'd on the last few lines of the launch-hadoop-cluster script.

      Specifically, on the
      """
      MASTER_EC2_HOST=`ec2-describe-instances | grep INSTANCE | grep running | awk '

      {if ($7 == 0) print $4}

      '`
      """
      line, it should be comparing column $8 rather than column $7.

      When this command fails, the hostname of the master doesn't get set correctly and the IP lookup finds incorrect results. The last lines of output from the script look something like this:
      """
      Appointing master
      Master is . Please set up DNS so blah.gotdns.org points to D.ROOT-SERVERS.NET.
      I.ROOT-SERVERS.NET.
      F.ROOT-SERVERS.NET.
      M.ROOT-SERVERS.NET.
      J.ROOT-SERVERS.NET.
      C.ROOT-SERVERS.NET.
      H.ROOT-SERVERS.NET.
      E.ROOT-SERVERS.NET.
      A.ROOT-SERVERS.NET.
      K.ROOT-SERVERS.NET.
      G.ROOT-SERVERS.NET.
      B.ROOT-SERVERS.NET.
      L.ROOT-SERVERS.NET..
      Press return to continue.
      """

      Attachments

        1. hadoop-1634.patch
          0.6 kB
          Stu Hood

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            Unassigned Unassigned
            stuhood Stu Hood
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              Created:
              Updated:
              Resolved:

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