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https://issues.apache.org/jira/browse/HDFS-8148?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14496111#comment-14496111
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nijel commented on HDFS-8148:
-----------------------------

Hi archana and surendra
Looks like the patch on https://issues.apache.org/jira/browse/HDFS-6666 fixed 
the issue.
Please confirm

>  NPE thrown at Namenode startup,.
> ---------------------------------
>
>                 Key: HDFS-8148
>                 URL: https://issues.apache.org/jira/browse/HDFS-8148
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: namenode
>            Reporter: Archana T
>            Assignee: surendra singh lilhore
>            Priority: Minor
>
> At Namenode startup, NPE thrown when unsupported config parameter configured 
> in hdfs-site.xml 
> {code}
> 2015-04-15 10:43:59,880 ERROR 
> org.apache.hadoop.hdfs.server.namenode.NameNode: Failed to start namenode.
> java.lang.NullPointerException
>         at 
> org.apache.hadoop.hdfs.server.namenode.FSNamesystem.stopActiveServices(FSNamesystem.java:1219)
>         at 
> org.apache.hadoop.hdfs.server.namenode.FSNamesystem.close(FSNamesystem.java:1540)
>         at 
> org.apache.hadoop.hdfs.server.namenode.FSNamesystem.<init>(FSNamesystem.java:841)
>         at 
> org.apache.hadoop.hdfs.server.namenode.FSNamesystem.loadFromDisk(FSNamesystem.java:669)
> {code}



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