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Posted to common-issues@hadoop.apache.org by "leo sun (Jira)" <ji...@apache.org> on 2022/10/21 06:42:00 UTC

[jira] [Created] (HADOOP-18502) Hadoop metrics should return 0 when there is no change

leo sun created HADOOP-18502:
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             Summary: Hadoop metrics should return 0 when there is no change
                 Key: HADOOP-18502
                 URL: https://issues.apache.org/jira/browse/HADOOP-18502
             Project: Hadoop Common
          Issue Type: Improvement
            Reporter: leo sun
            Assignee: leo sun
         Attachments: image-2022-10-21-14-41-43-105.png

When we try to switch active NN to standby, we find that the getContentSummary average time is always a very high value even if there is no more query. For us, the metrics return 0 is more reasonable. The monitor is as below:

!image-2022-10-21-14-41-43-105.png!

 



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