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  1. Hadoop Common
  2. HADOOP-697

Duplicate data node name calculation in Datanode constructor

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Details

    • Improvement
    • Status: Closed
    • Major
    • Resolution: Fixed
    • 0.8.0
    • None
    • None
    • None

    Description

      A data node name is calculated twice when a DataNode object is constructed. One is computed at line 158 in DataNode.java using the statement:

      InetAddress.getLocalHost().getHostName().

      The value is passed the private DataNode constructor but is never used. The name is recomputed at lines 189-192 using the statement:

      DNS.getDefaultHost(
      conf.get("dfs.datanode.dns.interface", "default"),
      conf.get("dfs.datanode.dns.nameserver", "default"))".

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          is part of

          Improvement - An improvement or enhancement to an existing feature or task. HADOOP-985 Namenode should identify DataNodes as ip:port instead of hostname:port

          • Major - Major loss of function.
          • Closed

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            People

              rangadi Raghu Angadi
              hairong Hairong Kuang
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              Dates

                Created:
                Updated:
                Resolved: