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https://issues.apache.org/jira/browse/HDFS-14150?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16720999#comment-16720999
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Ayush Saxena commented on HDFS-14150:
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Thanks [~tasanuma0829] for taking this up.
>From the discussion at HDFS-14143
bq. Just unset sub-filesystem's quota when removing mount tables.
That is a probable solution for sure.But on a thought if the directory that we
are mounting already had some quota set in. Shouldn't we sync up with that
too?Might be while creating the entry we could check the quotas of the
destination and put it in.That I guess would solve our existing use case too.
> RBF: Quotas of the sub-cluster should be removed when removing the mount point
> ------------------------------------------------------------------------------
>
> Key: HDFS-14150
> URL: https://issues.apache.org/jira/browse/HDFS-14150
> Project: Hadoop HDFS
> Issue Type: Improvement
> Reporter: Takanobu Asanuma
> Assignee: Takanobu Asanuma
> Priority: Major
> Labels: RBF
>
> From HDFS-14143
> {noformat}
> $ hdfs dfsrouteradmin -add /ns1_data ns1 /data
> $ hdfs dfsrouteradmin -setQuota /ns1_data -nsQuota 10 -ssQuota 10
> $ hdfs dfsrouteradmin -ls /ns1_data
> Source Destinations Owner
> Group Mode Quota/Usage
> /ns1_data ns1->/data tasanuma
> users rwxr-xr-x [NsQuota: 10/1, SsQuota:
> 10 B/0 B]
> $ hdfs dfsrouteradmin -rm /ns1_data
> $ hdfs dfsrouteradmin -add /ns1_data ns1 /data
> $ hdfs dfsrouteradmin -ls /ns1_data
> Source Destinations Owner
> Group Mode Quota/Usage
> /ns1_data ns1->/data tasanuma
> users rwxr-xr-x [NsQuota: -/-, SsQuota:
> -/-]
> $ hadoop fs -put file1 /ns1_data/file1
> put: The DiskSpace quota of /data is exceeded: quota = 10 B = 10 B but
> diskspace consumed = 402653184 B = 384 MB
> {noformat}
> This is because the quotas of the subclusters still remain after "hdfs
> dfsrouteradmin -rm". And "hdfs dfsrouteradmin -add" doesn't reflect the
> existing quotas.
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