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https://issues.apache.org/jira/browse/HDFS-2390?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14716466#comment-14716466
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Gautam Gopalakrishnan commented on HDFS-2390:
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Thanks [~qwertymaniac]
> dfsadmin -setBalancerBandwidth doesnot validate -ve value
> ---------------------------------------------------------
>
> Key: HDFS-2390
> URL: https://issues.apache.org/jira/browse/HDFS-2390
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: balancer & mover
> Affects Versions: 2.7.1
> Reporter: Rajit Saha
> Assignee: Gautam Gopalakrishnan
> Priority: Minor
> Fix For: 2.8.0
>
> Attachments: HDFS-2390-1.patch, HDFS-2390-2.patch, HDFS-2390-3.patch,
> HDFS-2390-4.patch
>
>
> $ hadoop dfsadmin -setBalancerBandwidth -10000
> does not throw any message that it is invalid although in DN log we are not
> getting
> "DNA_BALANCERBANDWIDTHUPDATE".
> I think it should throw some message that -ve numbers are not valid , as it
> does
> for decimal numbers or non-numbers like -
> $ hadoop dfsadmin -setBalancerBandwidth 12.34
> NumberFormatException: For input string: "12.34"
> Usage: java DFSAdmin [-setBalancerBandwidth <bandwidth in bytes per second>]
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