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