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From: "Brandon Li (JIRA)" <jira@apache.org>
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Subject: [jira] [Resolved] (HADOOP-10545) hdfs zkfc NullPointerException
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     [ https://issues.apache.org/jira/browse/HADOOP-10545?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Brandon Li resolved HADOOP-10545.
---------------------------------

    Resolution: Duplicate

> hdfs zkfc NullPointerException
> ------------------------------
>
>                 Key: HADOOP-10545
>                 URL: https://issues.apache.org/jira/browse/HADOOP-10545
>             Project: Hadoop Common
>          Issue Type: Bug
>    Affects Versions: 2.4.0
>         Environment: Linux
>            Reporter: Sebastien Barrier
>            Priority: Minor
>
> Running hdfs zkfc on a node which is not a Namenode result of NullPointerException.
> An error message should be displayed telling that zkfc must be run only on a Namenode server and/or to verify configuration parameters.
> # hdfs zkfc -formatZK
> Exception in thread "main" java.lang.NullPointerException
>         at com.google.common.base.Preconditions.checkNotNull(Preconditions.java:187)
>         at org.apache.hadoop.hdfs.tools.NNHAServiceTarget.<init>(NNHAServiceTarget.java:57)
>         at org.apache.hadoop.hdfs.tools.DFSZKFailoverController.create(DFSZKFailoverController.java:128)
>         at org.apache.hadoop.hdfs.tools.DFSZKFailoverController.main(DFSZKFailoverController.java:172)



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