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  1. Hadoop HDFS
  2. HDFS-7734

Class cast exception in NameNode#main

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    Details

    • Type: Bug
    • Status: Closed
    • Priority: Blocker
    • Resolution: Fixed
    • Affects Version/s: 2.7.0
    • Fix Version/s: 2.7.0
    • Component/s: namenode
    • Labels:
      None
    • Target Version/s:

      Description

      NameNode hits the following exception immediately on startup.

      15/02/03 15:50:25 ERROR namenode.NameNode: Failed to start namenode.
      java.lang.ClassCastException: org.apache.log4j.Logger cannot be cast to org.apache.commons.logging.Log
              at org.apache.hadoop.hdfs.server.namenode.NameNode.main(NameNode.java:1557)
      15/02/03 15:50:25 INFO util.ExitUtil: Exiting with status 1
      

      Location of the exception in NameNode.java:

        public static void main(String argv[]) throws Exception {
          if (DFSUtil.parseHelpArgument(argv, NameNode.USAGE, System.out, true)) {
            System.exit(0);
          }
      
          try {
            StringUtils.startupShutdownMessage(NameNode.class, argv,
                (org.apache.commons.logging.Log) LogManager.getLogger(LOG.getName()));   <<<<< Failed here.
      

        Attachments

        1. HDFS-7734.001.patch
          7 kB
          Yi Liu
        2. HDFS-7734.002.patch
          6 kB
          Yi Liu

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              • Assignee:
                hitliuyi Yi Liu
                Reporter:
                arp Arpit Agarwal
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                Dates

                • Created:
                  Updated:
                  Resolved: