Ambari部署后重启DataNode失败

Traceback (most recent call last):
  File "/usr/lib/ambari-agent/lib/resource_management/libraries/script/script.py", line 995, in restart
    self.status(env)
  File "/var/lib/ambari-agent/cache/stacks/HDP/3.0/services/HDFS/package/scripts/datanode.py", line 86, in status
    datanode(action = "status")
  File "/usr/lib/ambari-agent/lib/ambari_commons/os_family_impl.py", line 89, in thunk
    return fn(*args, **kwargs)
  File "/var/lib/ambari-agent/cache/stacks/HDP/3.0/services/HDFS/package/scripts/hdfs_datanode.py", line 75, in datanode
    PidFiles(params.possible_datanode_pid_files).check_status()
  File "/var/lib/ambari-agent/cache/stacks/HDP/3.0/services/HDFS/package/scripts/utils.py", line 433, in check_status
    raise ComponentIsNotRunning()
ComponentIsNotRunning

The above exception was the cause of the following exception:

Traceback (most recent call last):
  File "/var/lib/ambari-agent/cache/stacks/HDP/3.0/services/HDFS/package/scripts/datanode.py", line 126, in 
    DataNode().execute()
  File "/usr/lib/ambari-agent/lib/resource_management/libraries/script/script.py", line 352, in execute
    method(env)
  File "/usr/lib/ambari-agent/lib/resource_management/libraries/script/script.py", line 1006, in restart
    self.start(env, upgrade_type=upgrade_type)
  File "/var/lib/ambari-agent/cache/stacks/HDP/3.0/services/HDFS/package/scripts/datanode.py", line 68, in start
    datanode(action="start")
  File "/usr/lib/ambari-agent/lib/ambari_commons/os_family_impl.py", line 89, in thunk
    return fn(*args, **kwargs)
  File "/var/lib/ambari-agent/cache/stacks/HDP/3.0/services/HDFS/package/scripts/hdfs_datanode.py", line 71, in datanode
    create_log_dir=True
  File "/var/lib/ambari-agent/cache/stacks/HDP/3.0/services/HDFS/package/scripts/utils.py", line 261, in service
    Execute(daemon_cmd, not_if=process_id_exists_command, environment=hadoop_env_exports)
  File "/usr/lib/ambari-agent/lib/resource_management/core/base.py", line 166, in __init__
    self.env.run()
  File "/usr/lib/ambari-agent/lib/resource_management/core/environment.py", line 160, in run
    self.run_action(resource, action)
  File "/usr/lib/ambari-agent/lib/resource_management/core/environment.py", line 124, in run_action
    provider_action()
  File "/usr/lib/ambari-agent/lib/resource_management/core/providers/system.py", line 263, in action_run
    returns=self.resource.returns)
  File "/usr/lib/ambari-agent/lib/resource_management/core/shell.py", line 72, in inner
    result = function(command, **kwargs)
  File "/usr/lib/ambari-agent/lib/resource_management/core/shell.py", line 102, in checked_call
    tries=tries, try_sleep=try_sleep, timeout_kill_strategy=timeout_kill_strategy, returns=returns)
  File "/usr/lib/ambari-agent/lib/resource_management/core/shell.py", line 150, in _call_wrapper
    result = _call(command, **kwargs_copy)
  File "/usr/lib/ambari-agent/lib/resource_management/core/shell.py", line 314, in _call
    raise ExecutionFailed(err_msg, code, out, err)
resource_management.core.exceptions.ExecutionFailed: Execution of 'ambari-sudo.sh su hdfs -l -s /bin/bash -c 'ulimit -c unlimited ;  /usr/hdp/3.1.4.0-315/hadoop/bin/hdfs --config /usr/hdp/3.1.4.0-315/hadoop/conf --daemon start datanode'' returned 1.

经过排查发现是DataNode设置的资源过大,超出了服务器现在所剩下的资源,需要调小DataNode maximum Java heap size到合理水平,注意集群资源分配问题