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From "Wangda Tan (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-3254) HealthReport should include disk full information
Date Wed, 12 Jul 2017 21:07:00 GMT

    [ https://issues.apache.org/jira/browse/YARN-3254?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16084684#comment-16084684
] 

Wangda Tan commented on YARN-3254:
----------------------------------

[~ajisakaa], 

I think the original definition of JMX metrics compatibility is overkill, I can understand
the "semantic consistency" part, for example, change unit (from GB to MB, etc.). For text
fields such as report, we should be able to change them if needed. 

For example, YARN-90/YARN-6302 have already changed report field, if we strictly follow the
rule, we probably need to revert these patches as well. 

I would prefer to continue improving the text field. And start discussion to modify the compatibility
rule.

cc: [~kasha] (original author of the compatibility doc) and [~daniel@cloudera.com].

> HealthReport should include disk full information
> -------------------------------------------------
>
>                 Key: YARN-3254
>                 URL: https://issues.apache.org/jira/browse/YARN-3254
>             Project: Hadoop YARN
>          Issue Type: Improvement
>          Components: nodemanager
>    Affects Versions: 2.6.0
>            Reporter: Akira Ajisaka
>            Assignee: Suma Shivaprasad
>         Attachments: Screen Shot 2015-02-24 at 17.57.39.png, Screen Shot 2015-02-25 at
14.38.10.png, YARN-3254-001.patch, YARN-3254-002.patch
>
>
> When a NodeManager's local disk gets almost full, the NodeManager sends a health report
to ResourceManager that "local/log dir is bad" and the message is displayed on ResourceManager
Web UI. It's difficult for users to detect why the dir is bad.



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