Lei (Eddy) Xu created HDFS-10567:
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Summary: Improve plan command help message
Key: HDFS-10567
URL: https://issues.apache.org/jira/browse/HDFS-10567
Project: Hadoop HDFS
Issue Type: Sub-task
Reporter: Lei (Eddy) Xu
{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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