Victor Galgo created AMBARI-17182:
-------------------------------------
Summary: App timeline Server start fails on enabling HA because
namenode is in safemode
Key: AMBARI-17182
URL: https://issues.apache.org/jira/browse/AMBARI-17182
Project: Ambari
Issue Type: Bug
Affects Versions: 2.4.0
Reporter: Victor Galgo
Priority: Critical
Fix For: 2.4.0
On the last step "Start all" on enabling HA below happens:
{code}
Traceback (most recent call last):
File
"/var/lib/ambari-agent/cache/common-services/YARN/2.1.0.2.0/package/scripts/application_timeline_server.py",
line 147, in <module>
ApplicationTimelineServer().execute()
File
"/usr/lib/python2.6/site-packages/resource_management/libraries/script/script.py",
line 219, in execute
method(env)
File
"/var/lib/ambari-agent/cache/common-services/YARN/2.1.0.2.0/package/scripts/application_timeline_server.py",
line 43, in start
self.configure(env) # FOR SECURITY
File
"/var/lib/ambari-agent/cache/common-services/YARN/2.1.0.2.0/package/scripts/application_timeline_server.py",
line 54, in configure
yarn(name='apptimelineserver')
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/YARN/2.1.0.2.0/package/scripts/yarn.py",
line 276, in yarn
mode=0755
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 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/hdfs_resource.py",
line 463, in action_create_on_execute
self.action_delayed("create")
File
"/usr/lib/python2.6/site-packages/resource_management/libraries/providers/hdfs_resource.py",
line 460, in action_delayed
self.get_hdfs_resource_executor().action_delayed(action_name, self)
File
"/usr/lib/python2.6/site-packages/resource_management/libraries/providers/hdfs_resource.py",
line 259, in action_delayed
self._set_mode(self.target_status)
File
"/usr/lib/python2.6/site-packages/resource_management/libraries/providers/hdfs_resource.py",
line 366, in _set_mode
self.util.run_command(self.main_resource.resource.target, 'SETPERMISSION',
method='PUT', permission=self.mode, assertable_result=False)
File
"/usr/lib/python2.6/site-packages/resource_management/libraries/providers/hdfs_resource.py",
line 195, in run_command
raise Fail(err_msg)
resource_management.core.exceptions.Fail: Execution of 'curl -sS -L -w
'%{http_code}' -X PUT
'http://os-s11-3-iavzl-nat-s-ru242to25susesecha-12.openstacklocal:50070/webhdfs/v1/ats/done?op=SETPERMISSION&user.name=hdfs&permission=755''
returned status_code=403.
{
"RemoteException": {
"exception": "RetriableException",
"javaClassName": "org.apache.hadoop.ipc.RetriableException",
"message": "org.apache.hadoop.hdfs.server.namenode.SafeModeException:
Cannot set permission for /ats/done. Name node is in safe mode.\nThe reported
blocks 675 needs additional 16 blocks to reach the threshold 0.9900 of total
blocks 697.\nThe number of live datanodes 20 has reached the minimum number 0.
Safe mode will be turned off automatically once the thresholds have been
reached."
}
}
{code}
This happens because NN is not yet out of safemode at the moment of ats start,
because DNs just started.
To fix this "stop namenodes" has to be triggered before "start all".
If this is done, on "Start all" it will be ensured that datanodes start prior
to NN, and that NN are out of safemode before ATS start.
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
