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Posted to hdfs-issues@hadoop.apache.org by "ASF GitHub Bot (Jira)" <ji...@apache.org> on 2021/12/09 15:58:00 UTC
[jira] [Work logged] (HDFS-16376) Expose metrics of NodeNotChosenReason to JMX

     [ https://issues.apache.org/jira/browse/HDFS-16376?focusedWorklogId=693356&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-693356 ]

ASF GitHub Bot logged work on HDFS-16376:
-----------------------------------------

                Author: ASF GitHub Bot
            Created on: 09/Dec/21 15:57
            Start Date: 09/Dec/21 15:57
    Worklog Time Spent: 10m 
      Work Description: tomscut opened a new pull request #3778:
URL: https://github.com/apache/hadoop/pull/3778


   JIRA: [HDFS-16376](https://issues.apache.org/jira/browse/HDFS-16376).
   
   In our cluster, we can see logs for nodes that are not chosen. But it's hard to see the percentages in each reason from the logs. It is best to add relevant metrics to monitor the entire cluster.
   
   ![image](https://user-images.githubusercontent.com/55134131/145429562-88b28729-4486-44fd-8d47-09b6a5c94864.png)
   
   JMX metrics:
   ![block-placement-metrics](https://user-images.githubusercontent.com/55134131/145430372-d0282da3-586e-443a-87b9-7a079f31c675.jpg)
   


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Issue Time Tracking
-------------------

            Worklog Id:     (was: 693356)
    Remaining Estimate: 0h
            Time Spent: 10m

> Expose metrics of NodeNotChosenReason to JMX
> --------------------------------------------
>
>                 Key: HDFS-16376
>                 URL: https://issues.apache.org/jira/browse/HDFS-16376
>             Project: Hadoop HDFS
>          Issue Type: New Feature
>            Reporter: tomscut
>            Assignee: tomscut
>            Priority: Major
>              Labels: pull-request-available
>         Attachments: image-2021-12-09-23-48-42-865.png, image-2021-12-09-23-55-29-017.png
>
>          Time Spent: 10m
>  Remaining Estimate: 0h
>
> In our cluster, we can see logs for nodes that are not chosen. But it's hard to see the percentages in each reason from the logs. It is best to add relevant metrics to monitor the entire cluster.
> !image-2021-12-09-23-48-42-865.png|width=517,height=187!
> !image-2021-12-09-23-55-29-017.png|width=620,height=152!



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