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https://issues.apache.org/jira/browse/HDDS-14110?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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ASF GitHub Bot updated HDDS-14110:
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Labels: pull-request-available (was: )
> [DiskBalancer] Show EstimatedBytesToMove only during active balancing and
> improve threshold check message
> ---------------------------------------------------------------------------------------------------------
>
> Key: HDDS-14110
> URL: https://issues.apache.org/jira/browse/HDDS-14110
> Project: Apache Ozone
> Issue Type: Sub-task
> Reporter: Gargi Jaiswal
> Assignee: Gargi Jaiswal
> Priority: Minor
> Labels: pull-request-available
>
> This ticket resolves the bugs found out :
> * {{EstimatedBytesToMoved}} and {{EstimatedTimeLeft}} should not be shown up
> if no container movement happens.
> * Improve threshold validation error message. When running the DiskBalancer
> update command with a threshold value of {*}100.0{*}, the operation fails on
> all datanodes with the following error:
> {code:java}
> bash> ozone admin datanode diskbalancer update -t 100.0 --in-service-datanodes
> Error on node [DN-1]: Threshold must be a percentage(double) in the range 0
> to 100.{code}
> A threshold of *0* means any deviation from ideal usage (even 0.01%) triggers
> container movement
> - This leads to excessive and continuous balancing operations and results in
> unnecessary I/O overhead and resource consumption
> A Threshold value can never be 100.0% as it would mean allow moving 100% of a
> disk's contents, effectively emptying one disk.
> *Suggested improvement:*
> Rather the error message should clarify that 0 and 100 is excluded. The
> validation is being updated to exclude 0, requiring threshold to be in
> the range (0, 100) exclusive.
> new error msg:
> {code:java}
> Error on node [DN-1]: Threshold must be a percentage(double) in the range 0
> to 100 both exclusive.{code}
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