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Posted to common-issues@hadoop.apache.org by "Sami Abobala (JIRA)" <ji...@apache.org> on 2014/05/01 14:46:18 UTC

[jira] [Created] (HADOOP-10558) java.net.UnknownHostException: Invalid host name: local host is: (unknown)

Sami Abobala created HADOOP-10558:
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             Summary: 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


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
.
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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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