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From "Brahma Reddy Battula (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-8551) Fix hdfs datanode CLI usage message
Date Mon, 08 Jun 2015 18:18:01 GMT

     [ https://issues.apache.org/jira/browse/HDFS-8551?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Brahma Reddy Battula updated HDFS-8551:
---------------------------------------
    Attachment: HDFS-8551-002.patch

> Fix hdfs datanode CLI usage message
> -----------------------------------
>
>                 Key: HDFS-8551
>                 URL: https://issues.apache.org/jira/browse/HDFS-8551
>             Project: Hadoop HDFS
>          Issue Type: Bug
>    Affects Versions: 2.6.0
>            Reporter: Xiaoyu Yao
>            Assignee: Brahma Reddy Battula
>         Attachments: HDFS-8551-002.patch, HDFS-8551.patch
>
>
> There are two issues with current "hdfs datanode" usage message below.
> {code}
> Usage: java DataNode [-regular | -rollback]
>     -regular                 : Normal DataNode startup (default).
>     -rollback                : Rollback a standard or rolling upgrade.
>   Refer to HDFS documentation for the difference between standard
>   and rolling upgrades.
> {code}
> 1. "java DataNode" should be "hdfs datanode"
> 2. "rollingupgrace" option is missing but it is document correctly in the [link|http://hadoop.apache.org/docs/r2.7.0/hadoop-project-dist/hadoop-hdfs/HDFSCommands.html#datanode].
> {code}
> Usage: hdfs datanode [-regular | -rollback | -rollingupgrace rollback]
> COMMAND_OPTION	Description
> -regular	Normal datanode startup (default).
> -rollback	Rollback the datanode to the previous version. This should be used after stopping
the datanode and distributing the old hadoop version.
> -rollingupgrade rollback	Rollback a rolling upgrade operation.
> {code}



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