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https://issues.apache.org/jira/browse/HDDS-7444?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17626858#comment-17626858
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Dave Teng commented on HDDS-7444:
---------------------------------
open question:
# permissions — if a user has the permission to access /folder1 but not
/folder1/subfolder
will du reveal the size under /folder1/subfolder?
# We don’t have to, but ideally it would be best to approach the POSIX
semantics as close as possible
> Improvement for ozone -du/df functionalities
> --------------------------------------------
>
> Key: HDDS-7444
> URL: https://issues.apache.org/jira/browse/HDDS-7444
> Project: Apache Ozone
> Issue Type: Improvement
> Components: Ozone Filesystem
> Reporter: Dave Teng
> Priority: Major
> Labels: file-system, ozone
>
> This is an umbrella jira for Ozones's du/df functionalities improvement:
> Current Status
> Related found issues:
> [HDDS-7260|https://issues.apache.org/jira/browse/HDDS-7260]
> [HDDS-7443|https://issues.apache.org/jira/browse/HDDS-7443]
> What is supported:
> du:
> - du supports _admin_ user to query on volume/bucket/directory level (only
> supported in _FSO_ type of bucket)
> with command
> {code:java}
> ozone namespace du -r /vol1/bucket1/dir{code}
> df:
> - df supports _admin_ user to query quota on _bucket_ level (need _FSO_ type)
> {code:java}
> ozone admin namespace quota /vol1/bucket1 {code}
> What Not-Supported:
> du:
> - not supported for _non-admin_ users
> df:
> - not supported for _non-admin_ user
> - not supported on *directory* level for _admin_ user
>
> Propossal:
> In order to enable du/df to work for both admin/non-admin users,
> We'd like to improve the integration between Recon & Ozone.
> Though another possible solution is to use SCM to sum up du/df statistics and
> returns to OM,
> but this requires SCM to traverse all keys of the target directory, which
> might cause performance disadvange on SCM.
> Thus we think using Recon might be a better solution.
> What work is required:
> 1. Currently there is no ACL management in Recon.
> We have to firstly integrate ACL management into Recon.(For example, Ranger)
> 2. Utilize Recon API for ozone du command on volume/bucket/ directory level,
> with ACL integrated.
> 3. Utilize Recon API for ozone df command on volume/bucket/ directory level,
> with ACL integrated.
>
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