matteo brancaleoni created AMBARI-14926:
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Summary: ambari cached hdfs.py conflicts with python hdfs lib
resulting into monitoring errors
Key: AMBARI-14926
URL: https://issues.apache.org/jira/browse/AMBARI-14926
Project: Ambari
Issue Type: Bug
Components: ambari-agent
Affects Versions: 2.2.0
Environment: Linux CentOS 7 x86_64
Reporter: matteo brancaleoni
On systems with datanode and journal node monitored by ambari-agent,
if in the standard python path the hdfs lib is installed (
https://pypi.python.org/pypi/hdfs/ ) it makes datanode + journalnode and
monitoring fails:
* datanodes are seen up in global live datanodes
* but the service is down into the host service list
looking into the logs I get:
DEBUG 2016-02-04 16:54:49,160 PythonReflectiveExecutor.py:47 - Running command
reflectively ['/usr/bin/python2',
u'/var/lib/ambari-agent/cache/common-services/HDFS/2.1.0.2.0/package/scripts/journalnode.py',
'SECURITY_STATUS',
--
'/var/lib/ambari-agent/tmp']
DEBUG 2016-02-04 16:54:49,170 PythonReflectiveExecutor.py:61 - Reflective
command failed with exception:
Traceback (most recent call last):
File
"/usr/lib/python2.6/site-packages/ambari_agent/PythonReflectiveExecutor.py",
line 55, in run_file
imp.load_source('__main__', script)
File
"/var/lib/ambari-agent/cache/common-services/HDFS/2.1.0.2.0/package/scripts/journalnode.py",
line 30, in <module>
from utils import service
File
"/var/lib/ambari-agent/cache/common-services/HDFS/2.1.0.2.0/package/scripts/utils.py",
line 37, in <module>
from zkfc_slave import ZkfcSlave
File
"/var/lib/ambari-agent/cache/common-services/HDFS/2.1.0.2.0/package/scripts/zkfc_slave.py",
line 21, in <module>
from hdfs import hdfs
ImportError: cannot import name hdfs
I think that ambari is including its cache files after the python path, so if
an hdfs module is present into python path makes the scripts goes crazy.
(basically using the system hdfs py module and not his own)
maybe cache files path must be included before the python path or imported with
local imports?
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