Hi Dave, please help me. im not able to restart my yarn or Mapreduce2. I don’t know what is the issue. All my components are fine except Yarn. following below is the log file
2015-11-02 09:23:43,655 – Error while executing command ‘restart’:
Traceback (most recent call last):
File “/usr/lib/python2.6/site-packages/resource_management/libraries/script/script.py”, line 214, in execute
method(env)
File “/usr/lib/python2.6/site-packages/resource_management/libraries/script/script.py”, line 371, in restart
self.start(env)
File “/var/lib/ambari-agent/cache/common-services/YARN/2.1.0.2.0/package/scripts/nodemanager.py”, line 59, in start
service(‘nodemanager’,action=’start’)
File “/var/lib/ambari-agent/cache/common-services/YARN/2.1.0.2.0/package/scripts/service.py”, line 59, in service
initial_wait=5
File “/usr/lib/python2.6/site-packages/resource_management/core/base.py”, line 148, in __init__
self.env.run()
File “/usr/lib/python2.6/site-packages/resource_management/core/environment.py”, line 152, in run
self.run_action(resource, action)
File “/usr/lib/python2.6/site-packages/resource_management/core/environment.py”, line 118, in run_action
provider_action()
File “/usr/lib/python2.6/site-packages/resource_management/core/providers/system.py”, line 274, in action_run
raise ex
Fail: Execution of ‘ls /var/run/hadoop-yarn/yarn/yarn-yarn-nodemanager.pid >/dev/null 2>&1 && ps -p cat /var/run/hadoop-yarn/yarn/yarn-yarn-nodemanager.pid >/dev/null 2>&1′ returned 1.