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https://issues.apache.org/jira/browse/HDFS-11282?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Yiqun Lin updated HDFS-11282:
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Attachment: HDFS-11282.003.patch
Thanks for the patient review, [~arpitagarwal].
{quote}
The description for the count metrics and the rate metric is the same e.g.
TotalMetadataOperations and MetadataOperationRateNumOps. I am not sure that is
correct.
{quote}
I looked into this, the main difference between {{MutableCounter}} and
{{MutableRate}} is that the value of the former is monotonically increasing and
the latter will be reset after some interval time. Others comments have been
addressed in the latest patch. New patch attached, please have a review. Thanks.
> Document the missing metrics of DataNode Volume IO operations
> -------------------------------------------------------------
>
> Key: HDFS-11282
> URL: https://issues.apache.org/jira/browse/HDFS-11282
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: documentation
> Affects Versions: 3.0.0-alpha2
> Reporter: Yiqun Lin
> Assignee: Yiqun Lin
> Priority: Minor
> Attachments: HDFS-11282.001.patch, HDFS-11282.002.patch,
> HDFS-11282.003.patch, metrics-rendered.png
>
>
> In HDFS-10959, it added many metrics of datanode volume io opearions. But it
> hasn't been documented. This JIRA addressed on this.
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