[jira] Updated: (HADOOP-995) DataNode started with illegal startup options should print usage and stop

["dhruba borthakur (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HADOOP-995?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

dhruba borthakur updated HADOOP-995:
------------------------------------

    Component/s: dfs

> DataNode started with illegal startup options should print usage and stop
> -------------------------------------------------------------------------
>
>                 Key: HADOOP-995
>                 URL: https://issues.apache.org/jira/browse/HADOOP-995
>             Project: Hadoop
>          Issue Type: Bug
>          Components: dfs
>            Reporter: Konstantin Shvachko
>
> Now that we have data-node startup options we should enforce them and not start the data-node when the options are illegal.
> Currently the data-node just ignores illegal option.
> If I start my data-node with --rack option without the argument the data-node prints the usage and starts anyway.
> If I provide an unspecified option, say -xxx, then even the usage message is not printed.
> I see an inconsistency here between the usage information and the data-node behavior.

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