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https://issues.apache.org/jira/browse/HDFS-16595?focusedWorklogId=774883&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-774883
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ASF GitHub Bot logged work on HDFS-16595:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 26/May/22 02:26
Start Date: 26/May/22 02:26
Worklog Time Spent: 10m
Work Description: virajjasani opened a new pull request, #4357:
URL: https://github.com/apache/hadoop/pull/4357
### Description of PR
Slow datanode metrics include slow node and it's reporting node details.
With HDFS-16582, we added the aggregate latency that is perceived by the
reporting nodes.
In order to get more insights into how the outlier slownode's latencies
differ from the rest of the nodes, we should also expose median, median
absolute deviation and the calculated upper latency limit details.
### How was this patch tested?
UTs and Dev cluster testing:
<img width="1526" alt="Screenshot 2022-05-25 at 7 13 17 PM"
src="https://user-images.githubusercontent.com/34790606/170402806-e3ee106b-93e0-42f1-a4d4-2695dd679e98.png";>
### For code changes:
- [X] Does the title or this PR starts with the corresponding JIRA issue id
(e.g. 'HADOOP-17799. Your PR title ...')?
Issue Time Tracking
-------------------
Worklog Id: (was: 774883)
Remaining Estimate: 0h
Time Spent: 10m
> Slow peer metrics - add median, mad and upper latency limits
> ------------------------------------------------------------
>
> Key: HDFS-16595
> URL: https://issues.apache.org/jira/browse/HDFS-16595
> Project: Hadoop HDFS
> Issue Type: New Feature
> Reporter: Viraj Jasani
> Assignee: Viraj Jasani
> Priority: Major
> Time Spent: 10m
> Remaining Estimate: 0h
>
> Slow datanode metrics include slow node and it's reporting node details. With
> HDFS-16582, we added the aggregate latency that is perceived by the reporting
> nodes.
> In order to get more insights into how the outlier slownode's latencies
> differ from the rest of the nodes, we should also expose median, median
> absolute deviation and the calculated upper latency limit details.
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