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https://issues.apache.org/jira/browse/HDFS-13034?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16331614#comment-16331614
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maobaolong commented on HDFS-13034:
-----------------------------------

The reason is we reset the reserved to a very big value, so the capacity 
decrease, and lower than the used value.

> The DFSUsed value bigger than the Capacity
> ------------------------------------------
>
>                 Key: HDFS-13034
>                 URL: https://issues.apache.org/jira/browse/HDFS-13034
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: hdfs
>    Affects Versions: 2.7.1
>            Reporter: maobaolong
>            Priority: Minor
>
> ||Node||Last contact||Admin State||Capacity||Used||Non DFS 
> Used||Remaining||Blocks||Block pool used||Failed Volumes||Version||
> |A|0|In Service|20.65 TB|18.26 TB|0 B|1.27 TB|24330|2.57 TB (12.42%)|0|2.7.1|
> |B|2|In Service|5.47 TB|12.78 TB|0 B|1.46 TB|27657|2.65 TB (48.37%)|0|2.7.1|



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