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https://issues.apache.org/jira/browse/AMBARI-14307?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Alejandro Fernandez updated AMBARI-14307:
-----------------------------------------
Attachment: (was: AMBARI-14307.branch-2.2.patch)
> 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
>
> Attachments: AMBARI-14307.branch-2.2.patch, AMBARI-14307.trunk.patch
>
>
> * 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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