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https://issues.apache.org/jira/browse/HDFS-16521?focusedWorklogId=751438&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-751438
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ASF GitHub Bot logged work on HDFS-16521:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 01/Apr/22 07:55
Start Date: 01/Apr/22 07:55
Worklog Time Spent: 10m
Work Description: virajjasani commented on pull request #4107:
URL: https://github.com/apache/hadoop/pull/4107#issuecomment-1085550751
@jojochuang @iwasakims @ayushtkn
Created HDFS-16528 to support enabling peer stats without having to restart
Namenode. Planning to take it up after this PR because this PR has a couple of
tests where we can explicitly add outliers for few datanodes and have them
being reported as slownodes. I can utilize same UTs to provide tests for
reconfig options in HDFS-16528 to reduce redundant work.
Could you please help review this PR?
Thanks
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Issue Time Tracking
-------------------
Worklog Id: (was: 751438)
Time Spent: 2.5h (was: 2h 20m)
> DFS API to retrieve slow datanodes
> ----------------------------------
>
> Key: HDFS-16521
> URL: https://issues.apache.org/jira/browse/HDFS-16521
> Project: Hadoop HDFS
> Issue Type: New Feature
> Reporter: Viraj Jasani
> Assignee: Viraj Jasani
> Priority: Major
> Labels: pull-request-available
> Time Spent: 2.5h
> Remaining Estimate: 0h
>
> In order to build some automation around slow datanodes that regularly show
> up in the slow peer tracking report, e.g. decommission such nodes and queue
> them up for external processing and add them back later to the cluster after
> fixing issues etc, we should expose DFS API to retrieve all slow nodes at a
> given time.
> Providing such API would also help add an additional option to "dfsadmin
> -report" that lists slow datanodes info for operators to take a look,
> specifically useful filter for larger clusters.
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