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From "yuxh (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-11525) "Address already in use" has no exact conflict information
Date Thu, 16 Mar 2017 06:22:41 GMT

    [ https://issues.apache.org/jira/browse/HDFS-11525?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15927563#comment-15927563
] 

yuxh commented on HDFS-11525:
-----------------------------

hi surendrasingh ,is there anyway to debug this ?

> "Address already in use" has no exact conflict information
> ----------------------------------------------------------
>
>                 Key: HDFS-11525
>                 URL: https://issues.apache.org/jira/browse/HDFS-11525
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: datanode
>    Affects Versions: 2.7.3
>            Reporter: yuxh
>
> when I found datanode didnot start successful, I checked log :
> 2017-03-10 09:36:08,455 FATAL org.apache.hadoop.hdfs.server.datanode.DataNode: Exception
in secureMain
> java.net.BindException: Address already in use
>         at sun.nio.ch.Net.bind0(Native Method)
>         at sun.nio.ch.Net.bind(Net.java:433)
>         at sun.nio.ch.Net.bind(Net.java:425)
> which doesn't show which port has been used. I have to try in another machine to find
port 50075 is need to start up datanode.



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