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https://issues.apache.org/jira/browse/HDFS-13255?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16847633#comment-16847633
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Ayush Saxena commented on HDFS-13255:
-------------------------------------
Thanx [~aajisaka] for the patch.
* There are couple of test failures you need to handle.
* IIUC regarding Fail remove if under mount point point, you tend to say if
/mnt is a mount point delete operation on /mnt that should fail. If so this
seems genuine because deleting that will make the mount entry nonoperational,
viewFs also I guess doesn't allow such operation, Guess it throws some
internal....isReadOnly type exception. Regarding rename, need to check if there
leeds to any complications, well there is Jira tracking the rename operation
stuff. If something else also it restricts I guess we need to think regarding
the impacts.
* If thats only the stuff, may be you can extend a UT for the behaviour that
it stops delete on exact mount entries and others stay unaffected.
> RBF: Fail when try to remove mount point paths
> ----------------------------------------------
>
> Key: HDFS-13255
> URL: https://issues.apache.org/jira/browse/HDFS-13255
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Reporter: Wu Weiwei
> Assignee: Akira Ajisaka
> Priority: Major
> Attachments: HDFS-13255-HDFS-13891-002.patch,
> HDFS-13255-HDFS-13891-wip-001.patch
>
>
> when delete a ns-fed path which include mount point paths, will issue a error.
> Need to delete each mount point path independently.
> Operation step:
> {code:java}
> [hadp@root]$ hdfs dfsrouteradmin -ls
> Mount Table Entries:
> Source Destinations Owner Group Mode Quota/Usage
> /rm-test-all/rm-test-ns10 ns10->/rm-test hadp hadp rwxr-xr-x [NsQuota: -/-,
> SsQuota: -/-]
> /rm-test-all/rm-test-ns2 ns1->/rm-test hadp hadp rwxr-xr-x [NsQuota: -/-,
> SsQuota: -/-]
> [hadp@root]$ hdfs dfs -ls hdfs://ns-fed/rm-test-all/rm-test-ns10/
> Found 2 items
> -rw-r--r-- 3 hadp supergroup 3118 2018-03-07 21:52
> hdfs://ns-fed/rm-test-all/rm-test-ns10/core-site.xml
> -rw-r--r-- 3 hadp supergroup 7481 2018-03-07 21:52
> hdfs://ns-fed/rm-test-all/rm-test-ns10/hdfs-site.xml
> [hadp@root]$ hdfs dfs -ls hdfs://ns-fed/rm-test-all/rm-test-ns2/
> Found 2 items
> -rw-r--r-- 3 hadp supergroup 101 2018-03-07 16:57
> hdfs://ns-fed/rm-test-all/rm-test-ns2/NOTICE.txt
> -rw-r--r-- 3 hadp supergroup 1366 2018-03-07 16:57
> hdfs://ns-fed/rm-test-all/rm-test-ns2/README.txt
> [hadp@root]$ hdfs dfs -ls hdfs://ns-fed/rm-test-all/rm-test-ns10/
> Found 2 items
> -rw-r--r-- 3 hadp supergroup 3118 2018-03-07 21:52
> hdfs://ns-fed/rm-test-all/rm-test-ns10/core-site.xml
> -rw-r--r-- 3 hadp supergroup 7481 2018-03-07 21:52
> hdfs://ns-fed/rm-test-all/rm-test-ns10/hdfs-site.xml
> [hadp@root]$ hdfs dfs -rm -r hdfs://ns-fed/rm-test-all/
> rm: Failed to move to trash: hdfs://ns-fed/rm-test-all. Consider using
> -skipTrash option
> [hadp@root]$ hdfs dfs -rm -r -skipTrash hdfs://ns-fed/rm-test-all/
> rm: `hdfs://ns-fed/rm-test-all': Input/output error
> {code}
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