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From: "Przemyslaw Pastuszka (JIRA)" <jira@apache.org>
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Subject: [jira] [Updated] (WHIRR-749) Invalid hostname in fs.default.name in
 core-site.xml on ec2 cluster
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     [ https://issues.apache.org/jira/browse/WHIRR-749?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Przemyslaw Pastuszka updated WHIRR-749:
---------------------------------------

    Attachment: hadoop.properties

> Invalid hostname in fs.default.name in core-site.xml on ec2 cluster
> -------------------------------------------------------------------
>
>                 Key: WHIRR-749
>                 URL: https://issues.apache.org/jira/browse/WHIRR-749
>             Project: Whirr
>          Issue Type: Bug
>    Affects Versions: 0.8.2
>            Reporter: Przemyslaw Pastuszka
>         Attachments: hadoop.properties
>
>
> Tried to provision ec2 cluster using hadoop.properties (attached) file and whirr-0.8.2. Provisioning ended without any exception, but actually hadoop cluster was not usable - this was due to wrong addresses being configured in core-site.xml:
> {code}
>  <property>
>     <name>fs.default.name</name>
>     <value>hdfs://hadoop-37f7a94f:8020/</value>
>   </property>
> </configuration>
> {code}
> but system doesn't know such hostname:
> {code}
> $ ping hadoop-37f7a94f
> ping: unknown host hadoop-37f7a94f
> {code}
> As a result none of hadoop processes is working on the cluster - as a proof, that hostname is the root cause of the problem, here's excerpt from namenode logs:
> {code}
> 2013-10-06 11:46:55,872 ERROR org.apache.hadoop.hdfs.server.namenode.NameNode: java.net.UnknownHostException: Invalid hostname for server: hadoop-37f7a94f
>         at org.apache.hadoop.ipc.Server.bind(Server.java:275)
>         at org.apache.hadoop.ipc.Server$Listener.<init>(Server.java:341)
>         at org.apache.hadoop.ipc.Server.<init>(Server.java:1539)
>         at org.apache.hadoop.ipc.RPC$Server.<init>(RPC.java:569)
>         at org.apache.hadoop.ipc.RPC.getServer(RPC.java:530)
>         at org.apache.hadoop.hdfs.server.namenode.NameNode.initialize(NameNode.java:324)
>         at org.apache.hadoop.hdfs.server.namenode.NameNode.<init>(NameNode.java:569)
>         at org.apache.hadoop.hdfs.server.namenode.NameNode.createNameNode(NameNode.java:1479)
>         at org.apache.hadoop.hdfs.server.namenode.NameNode.main(NameNode.java:1488)
> {code}



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