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HDP on Linux – Installation Forum

HDP 2.1, HDFS dos not start

  • #52303
    Lohit Giri

    Hi HWX Team,

    i tried to installed HDP 2.1 yesterday on my dev cluster (Centos 6.4 x 64). Installation of all component went fine.

    But at the end Namenode start up timed out from Ambari web console. When i try to look onto namenode logs, there are no errors. But when i try to look onto Datanode logs. i see below errors repeatedly –

    2014-04-24 17:47:14,958 INFO datanode.DataNode ( – Problem connecting to server:
    2014-04-24 17:48:15,962 INFO datanode.DataNode ( – Problem connecting to server:
    2014-04-24 17:49:16,967 INFO datanode.DataNode ( – Problem connecting to server:

    i tried to check the connection from DNs to NN on the port and everything looks alright. i can do telnet on port 8020 for rpc. that looks ok.

    Can someone please suggest, what might be wrong here?

    Also i already did namenode format once alaready and tried restarting DNs and NN. Also i checked /etc/sudoers, and disabled “Defaults requiretty” already.

    Please help.

  • Author
  • #52304
    Lohit Giri

    pls ignore this issue, i found the issue. it was rack topology script behaving bad and namenode stuck trying to get rack awareness.

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