Jonathan Hurley created AMBARI-12778:
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Summary: RU: Downgrade Fails For All Components From Finalize
Key: AMBARI-12778
URL: https://issues.apache.org/jira/browse/AMBARI-12778
Project: Ambari
Issue Type: Bug
Components: ambari-server
Affects Versions: 2.1.0
Environment: HDP 2.2 to 2.3 (Downgrade after finalize)
Reporter: Jonathan Hurley
Assignee: Jonathan Hurley
Priority: Blocker
Fix For: 2.1.1
When downgrading a rolling upgrade from HDP 2.3 back to HDP 2.2, all components
will fail with:
{code}
Fail("Applying %s failed, looped symbolic links found while resolving %s" %
(self.resource, path))
resource_management.core.exceptions.Fail: Applying
Directory['/usr/hdp/current/flume-server/conf'] failed, looped symbolic links
found while resolving /usr/hdp/current/flume-server/conf
{code}
The problem is that Ambari changes {{/etc/component/conf}} from a directory to
a symlink when upgrading to HDP 2.3 from HDP 2.2. During the downgrade, once
the component is put back in HDP 2.2, the following is observed:
{code}
[root@c6401 flume]# ls -l /etc/flume
total 8
drwxr-xr-x 3 root root 4096 Aug 14 15:44 2.3.2.0-2586
lrwxrwxrwx 1 root root 34 Aug 14 16:14 conf ->
/usr/hdp/current/flume-server/conf
drwxr-xr-x 2 flume root 4096 Aug 14 15:42 conf.backup
(/usr/hdp/2.2.7.0-2816/flume/)
[root@c6401 flume]# ls -l /usr/hdp/current/flume-server/conf
total 16
drwxr-xr-x 2 root root 4096 Aug 14 15:42 bin
lrwxrwxrwx 1 root root 15 Aug 14 15:42 conf -> /etc/flume/conf
drwxr-xr-x 9 root root 4096 Aug 14 15:42 docs
drwxr-xr-x 2 root root 4096 Aug 14 15:42 lib
drwxr-xr-x 2 root root 4096 Aug 14 15:42 tools
{code}
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