[jira] [Created] (AMBARI-3558) Resource Manager. On resource fail should give actual error messages, not just exceptions and Enable passing lists to Execute() to fix the user escape errors

[Andrew Onischuk (JIRA)]

Andrew Onischuk created AMBARI-3558:
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             Summary: Resource Manager. On resource fail should give actual 
error messages, not just exceptions and Enable passing lists to Execute() to 
fix the user escape errors 
                 Key: AMBARI-3558
                 URL: https://issues.apache.org/jira/browse/AMBARI-3558
             Project: Ambari
          Issue Type: Bug
          Components: agent
            Reporter: Andrew Onischuk
            Assignee: Andrew Onischuk
             Fix For: 1.5.0


A lot resources are based on execing different cmd commands, so when these 
commands fail, we have very unhelpfull messages.

Here how it looks like:
{code}
Traceback (most recent call last):
  File "/root/workspace/tests/tests/test1.py", line 13, in <module>
    main()
  File "/root/workspace/tests/tests/test1.py", line 10, in main
    env.run()
  File "/usr/lib/python2.6/site-packages/resource_management/environment.py", 
line 117, in run
    self.run_action(resource, action)
  File "/usr/lib/python2.6/site-packages/resource_management/environment.py", 
line 78, in run_action
    provider_action()
  File 
"/usr/lib/python2.6/site-packages/resource_management/providers/service/__init__.py",
 line 32, in action_reload
    self._exec_cmd("reload", 0)
  File 
"/usr/lib/python2.6/site-packages/resource_management/providers/service/__init__.py",
 line 58, in _exec_cmd
    self, command, self.resource.service_name))
resource_management.exceptions.Fail: 
RedhatServiceProvider[Service['ambari-agent']] command reload for service 
ambari-agent failed
{code}

Here how it should looklike:
{code}
Traceback (most recent call last):
  File "/root/workspace/tests/tests/test1.py", line 13, in <module>
    main()
  File "/root/workspace/tests/tests/test1.py", line 10, in main
    env.run()
  File "/usr/lib/python2.6/site-packages/resource_management/environment.py", 
line 117, in run
    self.run_action(resource, action)
  File "/usr/lib/python2.6/site-packages/resource_management/environment.py", 
line 78, in run_action
    provider_action()
  File 
"/usr/lib/python2.6/site-packages/resource_management/providers/service/__init__.py",
 line 32, in action_reload
    self._exec_cmd("reload", 0)
  File 
"/usr/lib/python2.6/site-packages/resource_management/providers/service/__init__.py",
 line 58, in _exec_cmd self, command, self.resource.service_name))
resource_management.exceptions.Fail: Command 'yum -e 0 -d 0 install hadoop-dfs 
-y' failed with return code 1:
No package a available.
Error: Nothing to do
{code}

This will help a lot in future for users of the resource manager.



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