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From "Xiaobing Zhou (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-10567) Improve plan command help message
Date Wed, 06 Jul 2016 18:52:11 GMT

    [ https://issues.apache.org/jira/browse/HDFS-10567?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15364877#comment-15364877
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Xiaobing Zhou commented on HDFS-10567:
--------------------------------------

[~anu] you are right, we don't need 'in integer'. I posted patch v002.


> Improve plan command help message
> ---------------------------------
>
>                 Key: HDFS-10567
>                 URL: https://issues.apache.org/jira/browse/HDFS-10567
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: datanode
>            Reporter: Lei (Eddy) Xu
>            Assignee: Xiaobing Zhou
>         Attachments: HDFS-10567-HDFS-10576.001.patch, HDFS-10567-HDFS-10576.002.patch,
HDFS-10567-HDFS-1312.000.patch
>
>
> {code}
>     --bandwidth <arg>             Maximum disk bandwidth to be consumed by
>                                   diskBalancer. e.g. 10
>     --maxerror <arg>              Describes how many errors can be
>                                   tolerated while copying between a pair
>                                   of disks.
>     --out <arg>                   File to write output to, if not
>                                   specified defaults will be used.
>     --plan <arg>                  creates a plan for datanode.
>     --thresholdPercentage <arg>   Percentage skew that wetolerate before
>                                   diskbalancer starts working e.g. 10
>     --v                           Print out the summary of the plan on
>                                   console
> {code}
> We should 
> * Put the unit into {{--bandwidth}}, or its help message. Is it an integer or float /
double number? Not clear in CLI message.
> * Give more details about {{--plan}}. It is not clear what the {{<arg>}} is for.
> * {{--thresholdPercentage}},  has typo {{wetolerate}} in the error message. Also it needs
to indicated that it is the difference between space utilization between two disks / volumes.
 Is it an integer or float / double number?
> Thanks.



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