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From "Arpit Agarwal (JIRA)" <j...@apache.org>
Subject [jira] [Comment Edited] (HDFS-9038) DFS reserved space is erroneously counted towards non-DFS used.
Date Tue, 06 Sep 2016 03:39:20 GMT

    [ https://issues.apache.org/jira/browse/HDFS-9038?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15466291#comment-15466291
] 

Arpit Agarwal edited comment on HDFS-9038 at 9/6/16 3:38 AM:
-------------------------------------------------------------

+1 lgtm. The javac warning is due to a deprecated function which we must invoke to handle
wire compatibility. The checkstyle issue was also not introduced by this patch.

Thanks again [~brahmareddy] for persistently driving this issue to closure.


was (Author: arpitagarwal):
+1 lgtm. The findbugs warning is due to a deprecated function which we must invoke to handle
wire compatibility. The checkstyle issue was also not introduced by this patch.

Thanks again [~brahmareddy] for persistently driving this issue to closure.

> DFS reserved space is erroneously counted towards non-DFS used.
> ---------------------------------------------------------------
>
>                 Key: HDFS-9038
>                 URL: https://issues.apache.org/jira/browse/HDFS-9038
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: datanode
>    Affects Versions: 2.7.1
>            Reporter: Chris Nauroth
>            Assignee: Brahma Reddy Battula
>         Attachments: GetFree.java, HDFS-9038-002.patch, HDFS-9038-003.patch, HDFS-9038-004.patch,
HDFS-9038-005.patch, HDFS-9038-006.patch, HDFS-9038-007.patch, HDFS-9038-008.patch, HDFS-9038-009.patch,
HDFS-9038-010.patch, HDFS-9038-011.patch, HDFS-9038.patch
>
>
> HDFS-5215 changed the DataNode volume available space calculation to consider the reserved
space held by the {{dfs.datanode.du.reserved}} configuration property.  As a side effect,
reserved space is now counted towards non-DFS used.  I don't believe it was intentional to
change the definition of non-DFS used.  This issue proposes restoring the prior behavior:
do not count reserved space towards non-DFS used.



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