[jira] [Resolved] (HADOOP-17997) RBF: Namespace usage of mount table with multi subclusters can exceed quota

["xi chaomin (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HADOOP-17997?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

xi chaomin resolved HADOOP-17997.
---------------------------------
    Resolution: Won't Fix

> RBF: Namespace usage of mount table with multi subclusters can exceed quota
> ---------------------------------------------------------------------------
>
>                 Key: HADOOP-17997
>                 URL: https://issues.apache.org/jira/browse/HADOOP-17997
>             Project: Hadoop Common
>          Issue Type: Bug
>          Components: fs
>            Reporter: xi chaomin
>            Priority: Major
>              Labels: pull-request-available
>         Attachments: 1636424307319.jpg
>
>          Time Spent: 1.5h
>  Remaining Estimate: 0h
>
> # mkdir on each subcluster /test10
>  # mount table: hdfs dfsrouteradmin -add /test10 ns1,ns2 /test10
>  # set quota: hdfs dfsrouteradmin -setQuota /test10 -nsQuota 4
>  # touch two files under hdfs://\{fed}/test10, now the namespace usage is 4(2 directories and 2 files). 
>  # refresh and put a new file, the put is successfull, and the namespace usage comes to 5.
> !1636424307319.jpg!
> The router checks quota without considering the increments, It is difficult to limit quota precisely without increments , but throw exception when usage >= quota will be better.



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