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https://issues.apache.org/jira/browse/HDFS-8467?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14556242#comment-14556242
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Xiaoyu Yao commented on HDFS-8467:
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Thanks [~surendrasingh] for reporting the issue. This is by design as document
in "Quota Usage Update" section of HDFS-7584 design spec at this
[link|https://issues.apache.org/jira/secure/attachment/12693543/HDFS-7584%20Quota%20by%20Storage%20Type%20-%2001202015.pdf].
Usage of quota by storage type follow the same pattern as regular space quota.
It is based on intended usage rather than actual usage.
> [HDFS-Quota]Quota is getting updated after storage policy is modified even
> before mover command is executed.
> ------------------------------------------------------------------------------------------------------------
>
> Key: HDFS-8467
> URL: https://issues.apache.org/jira/browse/HDFS-8467
> Project: Hadoop HDFS
> Issue Type: Bug
> Reporter: Jagadesh Kiran N
> Assignee: surendra singh lilhore
>
> a. create a directory
> {code}
> ./hdfs dfs -mkdir /d1
> {code}
> b. Set storage policy HOT on /d1
> {code}
> ./hdfs storagepolicies -setStoragePolicy -path /d1 -policy HOT
> {code}
> c. Set space quota to disk on /d1
> {code}
> ./hdfs dfsadmin -setSpaceQuota 10000 -storageType DISK /d1
> {code}
> {code}
> ./hdfs dfs -count -v -q -h -t /d1
> DISK_QUOTA REM_DISK_QUOTA SSD_QUOTA REM_SSD_QUOTA ARCHIVE_QUOTA
> REM_ARCHIVE_QUOTA PATHNAME
> 9.8 K 9.8 K none inf none
> inf /d1
> {code}
> d. Insert 2 file each of 1000B
> {code}
> ./hdfs dfs -count -v -q -h -t /d1
> DISK_QUOTA REM_DISK_QUOTA SSD_QUOTA REM_SSD_QUOTA ARCHIVE_QUOTA
> REM_ARCHIVE_QUOTA PATHNAME
> 9.8 K 3.9 K none inf none
> inf /d1
> {code}
> e. Set ARCHIVE quota on /d1
> {code}
> ./hdfs dfsadmin -setSpaceQuota 10000 -storageType ARCHIVE /d1
> ./hdfs dfs -count -v -q -h -t /d1
> DISK_QUOTA REM_DISK_QUOTA SSD_QUOTA REM_SSD_QUOTA ARCHIVE_QUOTA
> REM_ARCHIVE_QUOTA PATHNAME
> 9.8 K 3.9 K none inf 9.8 K
> 9.8 K /d1
> {code}
> f. Change storagepilicy to COLD
> {code}
> ./hdfs storagepolicies -setStoragePolicy -path /d1 -policy COLD
> {code}
> g. Check REM_ARCHIVE_QUOTA Value
> {code}
> ./hdfs dfs -count -v -q -h -t /d1
> DISK_QUOTA REM_DISK_QUOTA SSD_QUOTA REM_SSD_QUOTA ARCHIVE_QUOTA
> REM_ARCHIVE_QUOTA PATHNAME
> 9.8 K 9.8 K none inf 9.8 K
> 3.9 K /d1
> {code}
> Here even when 'Mover' command is not run, quota of REM_ARCHIVE_QUOTA is
> reduced and REM_DISK_QUOTA is increased.
> Expected : After Mover is success quota values has to be changed.
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