Error HDFS within setup services

[#1]

I proceeded to setup of my cluster and I configured all services in Ambari Wizard, but when I try to deploy these services I got this error by HDFS, What should I do to fix it??

stderr: /var/lib/ambari-agent/data/errors-91.txt

Traceback (most recent call last):
  File "/var/lib/ambari-agent/cache/common-services/HDFS/2.1.0.2.0/package/scripts/hdfs_client.py", line 78, in <module>
    HdfsClient().execute()
  File "/usr/lib/python2.6/site-packages/resource_management/libraries/script/script.py", line 329, in execute
    method(env)
  File "/var/lib/ambari-agent/cache/common-services/HDFS/2.1.0.2.0/package/scripts/hdfs_client.py", line 39, in install
    self.configure(env)
  File "/usr/lib/python2.6/site-packages/resource_management/libraries/script/script.py", line 119, in locking_configure
    original_configure(obj, *args, **kw)
  File "/var/lib/ambari-agent/cache/common-services/HDFS/2.1.0.2.0/package/scripts/hdfs_client.py", line 44, in configure
    hdfs()
  File "/usr/lib/python2.6/site-packages/ambari_commons/os_family_impl.py", line 89, in thunk
    return fn(*args, **kwargs)
  File "/var/lib/ambari-agent/cache/common-services/HDFS/2.1.0.2.0/package/scripts/hdfs.py", line 61, in hdfs
    group=params.user_group
  File "/usr/lib/python2.6/site-packages/resource_management/core/base.py", line 155, in __init__
    self.env.run()
  File "/usr/lib/python2.6/site-packages/resource_management/core/environment.py", line 160, in run
    self.run_action(resource, action)
  File "/usr/lib/python2.6/site-packages/resource_management/core/environment.py", line 124, in run_action
    provider_action()
  File "/usr/lib/python2.6/site-packages/resource_management/libraries/providers/xml_config.py", line 66, in action_create
    encoding = self.resource.encoding
  File "/usr/lib/python2.6/site-packages/resource_management/core/base.py", line 155, in __init__
    self.env.run()
  File "/usr/lib/python2.6/site-packages/resource_management/core/environment.py", line 160, in run
    self.run_action(resource, action)
  File "/usr/lib/python2.6/site-packages/resource_management/core/environment.py", line 124, in run_action
    provider_action()
  File "/usr/lib/python2.6/site-packages/resource_management/core/providers/system.py", line 120, in action_create
    raise Fail("Applying %s failed, parent directory %s doesn't exist" % (self.resource, dirname))
resource_management.core.exceptions.Fail: Applying File['/usr/hdp/current/hadoop-client/conf/hadoop-policy.xml'] failed, parent directory /usr/hdp/current/hadoop-client/conf doesn't exist

[#2]

Are you installing as root or another user? Have you validated the directory permissions to make sure there is no permission issue blocking the installation? Are there additional details in the ambari-server or ambari-agent logs?

[#3]

@yassine:

check the permission on the entire path 'usr/hdp/current/hadoop-client/conf' on all cluster nodes, and make sure hdfs user can access it.