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From "Jonathan Hurley (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (AMBARI-12778) RU: Downgrade Fails For All Components From Finalize
Date Sat, 15 Aug 2015 12:48:45 GMT

     [ https://issues.apache.org/jira/browse/AMBARI-12778?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Jonathan Hurley updated AMBARI-12778:
-------------------------------------
    Attachment: AMBARI-12778.patch

> 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
>
>         Attachments: AMBARI-12778.patch
>
>
> 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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