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  1. Hadoop HDFS
  2. HDFS-762

Trying to start the balancer throws a NPE

    Details

    • Type: Bug
    • Status: Closed
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: 0.21.0
    • Fix Version/s: 0.21.0
    • Component/s: None
    • Labels:
      None
    • Hadoop Flags:
      Reviewed

      Description

      When trying to run the balancer, I get a NullPointerException:

      2009-11-10 11:08:14,235 ERROR org.apache.hadoop.hdfs.server.balancer.Balancer: java.lang.NullPointerException
      at org.apache.hadoop.hdfs.server.namenode.BlockPlacementPolicy.getInstance(BlockPlacementPolicy.java:161)
      at org.apache.hadoop.hdfs.server.balancer.Balancer.checkReplicationPolicyCompatibility(Balancer.java:784)
      at org.apache.hadoop.hdfs.server.balancer.Balancer.<init>(Balancer.java:792)
      at org.apache.hadoop.hdfs.server.balancer.Balancer.main(Balancer.java:814)

      This happens when trying to use bin/start-balancer or bin/hdfs balancer -threshold 10

      The config files (hdfs-site and core-site) have as fs.default.name hdfs://namenode:9000.

        Attachments

        1. HDFS-762.patch
          4 kB
          Cristian Ivascu
        2. 0001-corrected-balancer-constructor.patch
          5 kB
          Cristian Ivascu

          Activity

            People

            • Assignee:
              civascu Cristian Ivascu
              Reporter:
              civascu Cristian Ivascu
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              Dates

              • Created:
                Updated:
                Resolved: