FAQ
HDFS federation: Balancer command throws NullPointerException
--------------------------------------------------------------

Key: HDFS-1705
URL: https://issues.apache.org/jira/browse/HDFS-1705
Project: Hadoop HDFS
Issue Type: Sub-task
Components: balancer
Affects Versions: Federation Branch
Reporter: Tanping Wang
Assignee: Tanping Wang
Priority: Minor
Fix For: Federation Branch


Run balancer results in "java.lang.NullPointerException" error.

$ hdfs balancer
11/02/02 18:06:24 ERROR balancer.Balancer: java.lang.NullPointerException
at org.apache.hadoop.hdfs.server.balancer.Balancer$Cli.setConf(Balancer.java:1467)
at org.apache.hadoop.conf.Configured.(Configured.java:33)
at org.apache.hadoop.hdfs.server.balancer.Balancer$Cli.(Balancer.java:1553)

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  • Tsz Wo (Nicholas), SZE (JIRA) at Mar 3, 2011 at 1:15 am
    [ https://issues.apache.org/jira/browse/HDFS-1705?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

    Tsz Wo (Nicholas), SZE resolved HDFS-1705.
    ------------------------------------------

    Resolution: Fixed

    I have committed this. Thanks Suresh and Tanping!
    HDFS federation: Balancer command throws NullPointerException
    --------------------------------------------------------------

    Key: HDFS-1705
    URL: https://issues.apache.org/jira/browse/HDFS-1705
    Project: Hadoop HDFS
    Issue Type: Sub-task
    Components: balancer
    Affects Versions: Federation Branch
    Reporter: Tanping Wang
    Assignee: Suresh Srinivas
    Priority: Minor
    Fix For: Federation Branch

    Attachments: HDFS-1705.patch


    Run balancer results in "java.lang.NullPointerException" error.
    $ hdfs balancer
    11/02/02 18:06:24 ERROR balancer.Balancer: java.lang.NullPointerException
    at org.apache.hadoop.hdfs.server.balancer.Balancer$Cli.setConf(Balancer.java:1467)
    at org.apache.hadoop.conf.Configured.<init>(Configured.java:38)
    at org.apache.hadoop.conf.Configured.<init>(Configured.java:33)
    at org.apache.hadoop.hdfs.server.balancer.Balancer$Cli.<init>(Balancer.java:1463)
    at org.apache.hadoop.hdfs.server.balancer.Balancer.main(Balancer.java:1553)
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    For more information on JIRA, see: http://www.atlassian.com/software/jira

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postedMar 2, '11 at 11:16p
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