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From "Brahma Reddy Battula (JIRA)" <j...@apache.org>
Subject [jira] [Comment Edited] (HDFS-11896) Non-dfsUsed will be doubled on dead node re-registration in branch-2.7.
Date Mon, 29 May 2017 10:51:04 GMT

    [ https://issues.apache.org/jira/browse/HDFS-11896?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16027775#comment-16027775
] 

Brahma Reddy Battula edited comment on HDFS-11896 at 5/29/17 10:50 AM:
-----------------------------------------------------------------------

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

Yes,we can backport HDFS-9034.
bq. 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.

Yes, it can be committed to all versions.But issue will not occur in other versions because
nondfs is reset during the register before adding back stats. and  *test will not fail without
source changes .* 

IMO,we can merge attached patch to all versions which will fix the {{nondfsused}} and we can
raise seperate issue to backport HDFS-9034.


was (Author: brahmareddy):
bq.Can we do just that in this jira for 2.7. Will it fix NonDfsUsed reporting issue?

Yes,we can backport HDFS-9034.

bq. 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.

Yes, it can be committed to all versions.But issue will not occur in other versions because
nondfs is reset during the register before adding back stats. and  *test will not fail without
source changes .* 



> 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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