Alejandro Fernandez created AMBARI-14307:
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Summary: RU: Kafka broker restart failed on downgrade from HDP 2.3
to 2.2 due to circular symlink of /etc/hadoop/conf
Key: AMBARI-14307
URL: https://issues.apache.org/jira/browse/AMBARI-14307
Project: Ambari
Issue Type: Bug
Components: ambari-server
Affects Versions: 2.2.0
Reporter: Alejandro Fernandez
Assignee: Alejandro Fernandez
Priority: Blocker
Fix For: 2.2.0
* Ambari 2.2 at hash for AMBARI-14237 (e15d1e0fb3777f79cb473cf5de0f7a6bf30e63bd)
* HDP 2.2.8.0 with HDFS, YARN/MR, ZK, Kafka
* RU from to 2.3.4.0 and reach the Finalize screen.
* Then downgrade,
Kafka broker restart failed on downgrade
{code}
Traceback (most recent call last):
File
\"/var/lib/ambari-agent/cache/stacks/HDP/2.0.6/hooks/before-START/scripts/hook.py\",
line 39, in <module>
BeforeStartHook().execute()
File
\"/usr/lib/python2.6/site-packages/resource_management/libraries/script/script.py\",
line 217, in execute
method(env)
File
\"/var/lib/ambari-agent/cache/stacks/HDP/2.0.6/hooks/before-START/scripts/hook.py\",
line 36, in hook
create_topology_script_and_mapping()
File
\"/var/lib/ambari-agent/cache/stacks/HDP/2.0.6/hooks/before-START/scripts/rack_awareness.py\",
line 69, in create_topology_script_and_mapping
create_topology_mapping()
File
\"/var/lib/ambari-agent/cache/stacks/HDP/2.0.6/hooks/before-START/scripts/rack_awareness.py\",
line 36, in create_topology_mapping
group=params.user_group)
File \"/usr/lib/python2.6/site-packages/resource_management/core/base.py\",
line 154, in __init__
self.env.run()
File
\"/usr/lib/python2.6/site-packages/resource_management/core/environment.py\",
line 158, in run
self.run_action(resource, action)
File
\"/usr/lib/python2.6/site-packages/resource_management/core/environment.py\",
line 121, in run_action
provider_action()
File
\"/usr/lib/python2.6/site-packages/resource_management/core/providers/system.py\",
line 144, in action_create
raise Fail(\"Applying %s failed, looped symbolic links found while
resolving %s\" % (self.resource, path))
resource_management.core.exceptions.Fail: Applying
Directory['/etc/hadoop/conf'] failed, looped symbolic links found while
resolving /etc/hadoop/conf
Error: Error: Unable to run the custom hook script ['/usr/bin/python2',
'/var/lib/ambari-agent/cache/stacks/HDP/2.0.6/hooks/before-START/scripts/hook.py',
'START', '/var/lib/ambari-agent/data/command-2873.json',
'/var/lib/ambari-agent/cache/stacks/HDP/2.0.6/hooks/before-START',
'/var/lib/ambari-agent/data/structured-out-2873.json', 'INFO',
'/var/lib/ambari-agent/tmp']
{code}
This failed because /etc/hadoop/conf is now a circular symlink
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