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From "Konstantin Shvachko (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-11896) Non-dfsUsed will be doubled on dead node re-registration in branch-2.7.
Date Sun, 28 May 2017 00:55:04 GMT

    [ https://issues.apache.org/jira/browse/HDFS-11896?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16027666#comment-16027666

Konstantin Shvachko commented on HDFS-11896:

??This will not happen after HDFS-9034 since stats will be added after updateheartbeat.??

Can we do just that in this jira for 2.7. Will it fix NonDfsUsed reporting issue?

[~brahmareddy], I think your patch is useful in all versions, should not be restricted to
2.7 only, especially the test case. Why don't you target this change for trunk, etc.
For 2.7 we should be fixing the NonDfsUsed reporting only. I believe something is not resetting
during DN registration, which it does in other versions.

> Non-dfsUsed will be doubled on dead node re-registration in branch-2.7.
> -----------------------------------------------------------------------
>                 Key: HDFS-11896
>                 URL: https://issues.apache.org/jira/browse/HDFS-11896
>             Project: Hadoop HDFS
>          Issue Type: Bug
>    Affects Versions: 2.7.3
>            Reporter: Brahma Reddy Battula
>            Assignee: Brahma Reddy Battula
>              Labels: release-blocker
>         Attachments: HDFS-11896-branch-2.7-001.patch
>  *Scenario:* 
> i)Make you sure you've non-dfs data.
> ii) Stop Datanode
> iii) wait it becomes dead
> iv) now restart and check the non-dfs data

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