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https://issues.apache.org/jira/browse/HDFS-14150?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16724615#comment-16724615
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Takanobu Asanuma commented on HDFS-14150:
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{quote}This won't be easy to do since sub-clusters maybe have different
existing quota values.
{quote}
Is it about {{Multiple subclusters}}?
I'm still wondering if it is possible that both of sub-clusters and
Router(StateStore) can synchronize with each other. I mean, updating not only
the quota usage but also the quota definition periodically would be good. The
current specification is following and a little confusing.
* If users use setQuota/crlQuota in Router admin, the quota definition will be
sync to the subclusters.
* Even if users use setQuota/crlQuota in subclusters, the quota definition
isn't sync to the Router(StateStore).
> 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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