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https://issues.apache.org/jira/browse/HDFS-14150?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16724759#comment-16724759
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Ayush Saxena commented on HDFS-14150:
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bq . I like this idea. This can also make sense once the quota being changed
accidentally by users.
Not pretty sure how can we take this ahead in case of multiple dests. One is
set to 5 Other to 7.Would we keep the minimum? or Something else?
> 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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