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https://issues.apache.org/jira/browse/HDFS-6292?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ravi Prakash updated HDFS-6292:
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Attachment: HDFS-6292.01.patch
Ok! Here's the skeleton code that has come out of my attempt to add this
functionality to the NameNode. DISCLAIMER: This patch is not ready and I'm
uploading it only so that you folks can see what I'm thinking so far.
I would request feedback on the following (and whatever else you think of):
1. Should HdfsUsageMetricsSource be thread safe? Should I just assume the FSN
write lock is always held when calling into here?
2. I understand that we need to plug into a LOT of places to correctly update
the stats. I have only plugged into 2-3 places (so obviously the usage will be
incorrect if you venture out of those ops: create / delete / chown files+dirs
and even these have wrinkles I need to smooth) . I propose we do this all as
another sub-task after the framework gets committed.
3. I still need to figure out how best to let this be configurable for any of
the HDFS daemons: NameNode/Standby/SecondaryNamenode
4. Enable and disable this feature dynamically.
> Display HDFS per user and per group usage on the webUI
> ------------------------------------------------------
>
> Key: HDFS-6292
> URL: https://issues.apache.org/jira/browse/HDFS-6292
> Project: Hadoop HDFS
> Issue Type: Improvement
> Affects Versions: 2.4.0
> Reporter: Ravi Prakash
> Assignee: Ravi Prakash
> Attachments: HDFS-6292.01.patch, HDFS-6292.patch, HDFS-6292.png
>
>
> It would be nice to show HDFS usage per user and per group on a web ui.
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