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From "Steve Loughran (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-5200) NPE when the datanode comes up but the filesystem is set to file://
Date Mon, 09 Feb 2009 13:12:59 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-5200?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12671843#action_12671843
] 

Steve Loughran commented on HADOOP-5200:
----------------------------------------

stack trace is in my patched code, but the problem lines in NameNode.getAddress(); the assumption
that FileSystem.getDefaultUri(conf).getAuthority() is never null

java.lang.NullPointerException
	at org.apache.hadoop.util.Service.deploy(Service.java:668)
	at org.apache.hadoop.hdfs.server.namenode.NameNode.createNameNode(NameNode.java:1041)
	at org.apache.hadoop.hdfs.server.namenode.NameNode.main(NameNode.java:1050)
Caused by: java.lang.NullPointerException
	at org.apache.hadoop.net.NetUtils.createSocketAddr(NetUtils.java:134)
	at org.apache.hadoop.hdfs.server.namenode.NameNode.getAddress(NameNode.java:159)
	at org.apache.hadoop.hdfs.server.namenode.NameNode.getAddress(NameNode.java:163)
	at org.apache.hadoop.hdfs.server.namenode.NameNode.initialize(NameNode.java:179)
	at org.apache.hadoop.hdfs.server.namenode.NameNode.innerStart(NameNode.java:300)
	at org.apache.hadoop.util.Service.start(Service.java:186)
	at org.apache.hadoop.util.Service.deploy(Service.java:655)
	... 2 more

> NPE when the datanode comes up but the filesystem is set to file://
> -------------------------------------------------------------------
>
>                 Key: HADOOP-5200
>                 URL: https://issues.apache.org/jira/browse/HADOOP-5200
>             Project: Hadoop Core
>          Issue Type: Bug
>          Components: dfs
>    Affects Versions: 0.21.0
>            Reporter: Steve Loughran
>            Priority: Minor
>
> If you bring up a namenode and the conf file points to file:/// as the URI, then the
authority is null, breaking code that follows

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