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Posted to hdfs-issues@hadoop.apache.org by "Gabor Bota (JIRA)" <ji...@apache.org> on 2018/05/07 12:45:00 UTC
[jira] [Assigned] (HDFS-13322) fuse dfs - uid persists when
switching between ticket caches
[ https://issues.apache.org/jira/browse/HDFS-13322?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Gabor Bota reassigned HDFS-13322:
---------------------------------
Assignee: (was: Gabor Bota)
> fuse dfs - uid persists when switching between ticket caches
> ------------------------------------------------------------
>
> Key: HDFS-13322
> URL: https://issues.apache.org/jira/browse/HDFS-13322
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: fuse-dfs
> Affects Versions: 2.6.0
> Environment: Linux xxxxxx.xx.xx.xxx 3.10.0-514.el7.x86_64 #1 SMP Wed Oct 19 11:24:13 EDT 2016 x86_64 x86_64 x86_64 GNU/Linux
>
> Reporter: Alex Volskiy
> Priority: Minor
>
> The symptoms of this issue are the same as described in HDFS-3608 except the workaround that was applied (detect changes in UID ticket cache) doesn't resolve the issue when multiple ticket caches are in use by the same user.
> Our use case requires that a job scheduler running as a specific uid obtain separate kerberos sessions per job and that each of these sessions use a separate cache. When switching sessions this way, no change is made to the original ticket cache so the cached filesystem instance doesn't get regenerated.
>
> {{$ export KRB5CCNAME=/tmp/krb5cc_session1}}
> {{$ kinit user_a@domain}}
> {{$ touch /fuse_mount/tmp/testfile1}}
> {{$ ls -l /fuse_mount/tmp/testfile1}}
> {{ *-rwxrwxr-x 1 user_a user_a 0 Mar 21 13:37 /fuse_mount/tmp/testfile1*}}
> {{$ export KRB5CCNAME=/tmp/krb5cc_session2}}
> {{$ kinit user_b@domain}}
> {{$ touch /fuse_mount/tmp/testfile2}}
> {{$ ls -l /fuse_mount/tmp/testfile2}}
> {{ *-rwxrwxr-x 1 user_a user_a 0 Mar 21 13:37 /fuse_mount/tmp/testfile2*}}
> {{ }}{color:#d04437}*{{** expected owner to be user_b **}}*{color}
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