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Jinglun commented on HDFS-14739: -------------------------------- Hi [~xuzq_zander], I ran into the same problem recently. The root cause is in RouterClientProtocol.getListing() it passes a broken child to getMountPointStatus(). The patchv03 RouterClientProtocol.getListing()#829~831 makes sense to me, you pass the full path of child to it. If I understand right, v03 RouterClientProtocol.getListing()#748~764 is used when there is no default namespace nor a / mount. Shouldn't we simply let it fail when there is no default and / mount ? I mean why we need to catch the IOException, could we just let it throw ? About the unit test, I've make TestRouterMountTable.testMountTablePermissionsNoDest() stronger in HDFS-14867. Hope it can help, just for reference. > RBF: LS command for mount point shows wrong owner and permission information. > ----------------------------------------------------------------------------- > > Key: HDFS-14739 > URL: https://issues.apache.org/jira/browse/HDFS-14739 > Project: Hadoop HDFS > Issue Type: Bug > Reporter: xuzq > Assignee: xuzq > Priority: Major > Attachments: HDFS-14739-trunk-001.patch, HDFS-14739-trunk-002.patch, > HDFS-14739-trunk-003.patch, image-2019-08-16-17-15-50-614.png, > image-2019-08-16-17-16-00-863.png, image-2019-08-16-17-16-34-325.png > > > ||source||target namespace||destination||owner||group||permission|| > |/mnt|ns0|/mnt|mnt|mnt_group|755| > |/mnt/test1|ns1|/mnt/test1|mnt_test1|mnt_test1_group|755| > |/test1|ns1|/test1|test1|test1_group|755| > When do getListing("/mnt"), the owner of */mnt/test1* should be *mnt_test1* > instead of *test1* in result. > > And if the mount table as blew, we should support getListing("/mnt") instead > of throw IOException when dfs.federation.router.default.nameservice.enable is > false. > ||source||target namespace||destination||owner||group||permission|| > |/mnt/test1|ns0|/mnt/test1|test1|test1|755| > |/mnt/test2|ns1|/mnt/test2|test2|test2|755| > > -- This message was sent by Atlassian Jira (v8.3.4#803005) --------------------------------------------------------------------- To unsubscribe, e-mail: hdfs-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: hdfs-issues-h...@hadoop.apache.org