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From "Arpit Gupta (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (HDFS-3977) Incompatible change between hadoop-1 and hadoop-2 when the dfs.hosts and dfs.hosts.exclude files are not present
Date Wed, 26 Sep 2012 16:09:07 GMT

     [ https://issues.apache.org/jira/browse/HDFS-3977?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Arpit Gupta resolved HDFS-3977.
-------------------------------

    Resolution: Invalid

Thanks Todd.

Resolving it as invalid.
                
> Incompatible change between hadoop-1 and hadoop-2 when the dfs.hosts and dfs.hosts.exclude
files are not present
> ----------------------------------------------------------------------------------------------------------------
>
>                 Key: HDFS-3977
>                 URL: https://issues.apache.org/jira/browse/HDFS-3977
>             Project: Hadoop HDFS
>          Issue Type: Bug
>    Affects Versions: 2.0.2-alpha
>            Reporter: Arpit Gupta
>            Assignee: Arpit Gupta
>
> While testing hadoop-1 and hadoop-2 the following was noticed
> if the files in the properties dfs.hosts and dfs.hosts.exclude do not exist
> in hadoop-1 namenode format and start went through successfully.
> in hadoop-2 we get a file not found exception and both the format and the namenode start
commands fail.
> We should be logging a warning in the case when the file is not found so that we are
compatible with hadoop-1

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