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https://issues.apache.org/jira/browse/HDFS-8092?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14485402#comment-14485402
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Allen Wittenauer commented on HDFS-8092:
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Snapshots should most definitely be considered part of the quota calculation.
They are not free and do take up space.
> dfs -count -q should not consider snapshots under REM_QUOTA
> -----------------------------------------------------------
>
> Key: HDFS-8092
> URL: https://issues.apache.org/jira/browse/HDFS-8092
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: snapshots, tools
> Reporter: Archana T
> Assignee: Rakesh R
> Priority: Minor
>
> dfs -count -q should not consider snapshots under Remaining quota
> List of Operations performed-
> 1. hdfs dfs -mkdir /Dir1
> 2. hdfs dfsadmin -setQuota 2 /Dir1
> 3. hadoop fs -count -q -h -v /Dir1
>
> QUOTA {color:red} REM_QUOTA{color} SPACE_QUOTA
> REM_SPACE_QUOTA DIR_COUNT FILE_COUNT CONTENT_SIZE PATHNAME
> 2 {color:red} 1 {color} none
> inf 1 0 0 /Dir1
> 4. hdfs dfs -put hdfs /Dir1/f1
> 5. hadoop fs -count -q -h -v /Dir1
> QUOTA {color:red} REM_QUOTA{color} SPACE_QUOTA
> REM_SPACE_QUOTA DIR_COUNT FILE_COUNT CONTENT_SIZE PATHNAME
> 2 {color:red} 0{color} none
> inf 1 1 11.4 K /Dir1
> 6. hdfs dfsadmin -allowSnapshot /Dir1
> 7. hdfs dfs -createSnapshot /Dir1
> 8. hadoop fs -count -q -h -v /Dir1
> QUOTA {color:red} REM_QUOTA{color} SPACE_QUOTA REM_SPACE_QUOTA
> DIR_COUNT FILE_COUNT CONTENT_SIZE PATHNAME
> 2 {color:red} -1 {color} none
> inf 2 1 11.4 K /Dir1
> Whenever snapshots created the value of REM_QUOTA gets decremented.
> When creation of snaphots are not considered under quota of that respective
> dir then dfs -count should not decrement REM_QUOTA value
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