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From "Steve Loughran (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-10558) java.net.UnknownHostException: Invalid host name: local host is: (unknown)
Date Wed, 09 Jul 2014 08:50:05 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-10558?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14056007#comment-14056007
] 

Steve Loughran commented on HADOOP-10558:
-----------------------------------------

I'm afraid both of you appear to have some network configuration problem.

All we can do is say "follow the wiki link and try their suggestions". There may be some other
cause in your network -the list isn't exhaustive...if you do find a new cause then add it
to the list.

I'm going to have to close this as invalid as it works for everyone else, it's not a bug in
Hadoop, it's something wrong with your network. Sorry

https://wiki.apache.org/hadoop/InvalidJiraIssues

> java.net.UnknownHostException: Invalid host name: local host is: (unknown)
> --------------------------------------------------------------------------
>
>                 Key: HADOOP-10558
>                 URL: https://issues.apache.org/jira/browse/HADOOP-10558
>             Project: Hadoop Common
>          Issue Type: Bug
>         Environment: two node cluster
> ubuntu 12.04 LTS in both
> Java version "1.7.0_25"
> node 1: core i5 4 GB RAM
> node 2: core i3 4 GB RAM
>            Reporter: Sami Abobala
>              Labels: debian, hadoop, hadoop-3.0.0-SNAPSHOT, mapreduce, ubuntu
>
> I had this exception  every time i try to run map-red job, I went to http://wiki.apache.org/hadoop/UnknownHost
> and tried every possible solution and still have the same result 
> Task Id : attempt_1398945803120_0001_m_000004_0, Status : FAILED
> Container launch failed for container_1398945803120_0001_01_000006 : java.lang.reflect.UndeclaredThrowableException
> .
> .
> Caused by: com.google.protobuf.ServiceException: java.net.UnknownHostException: Invalid
host name: local host is: (unknown); destination host is: ""fatima-HP-ProBook-4520s":8042;
java.net.UnknownHostException; For more details see:  http://wiki.apache.org/hadoop/UnknownHost
> .	
> .



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