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From "Xiaobing Zhou (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-10551) o.a.h.h.s.diskbalancer.command.Command does not actually verify options as expected.
Date Wed, 22 Jun 2016 17:16:57 GMT

    [ https://issues.apache.org/jira/browse/HDFS-10551?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15344765#comment-15344765

Xiaobing Zhou commented on HDFS-10551:

[~anu] thanks for the patch. +1 v002 patch. Would you please fix the check style?

> o.a.h.h.s.diskbalancer.command.Command does not actually verify options as expected.
> ------------------------------------------------------------------------------------
>                 Key: HDFS-10551
>                 URL: https://issues.apache.org/jira/browse/HDFS-10551
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: datanode
>            Reporter: Lei (Eddy) Xu
>            Assignee: Anu Engineer
>            Priority: Critical
>         Attachments: HDFS-10551-HDFS-1312.001.patch, HDFS-10551-HDFS-1312.002.patch
> In {{diskbalancer.command.Command#verifyCommandOptions}}. The following code does not
do what it expected to do:
> {code}
> if (!validArgs.containsKey(opt.getArgName())) {
> {code}
> opt.getArgName() always returns "arg" instead of i.e., {{report}} or {{uri}}, which is
the expected parameter to check.
> It should use {{opt.getLongOpt()}} to get the option names. It can pass on the branch
because {{opt.getArgName()}} always returns {{"arg"}}, which is accidently in {{validArgs}}.
However I don't think it is the intention for this function.
> Additionally, in the following code
> {code}
> validArguments.append("Valid arguments are : %n");
> {code}
> This {{%n}} is not used.

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