Details
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Bug
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Status: Resolved
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Blocker
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Resolution: Fixed
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2.1.0
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None
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HDP 2.2 to 2.3 (Downgrade after finalize)
Description
When downgrading a rolling upgrade from HDP 2.3 back to HDP 2.2, all components will fail with:
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
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:
[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