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https://issues.apache.org/jira/browse/AMBARI-14926?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Andrew Onischuk updated AMBARI-14926:
-------------------------------------
Fix Version/s: 2.2.2
> 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
> Assignee: Andrew Onischuk
> Fix For: 2.2.2
>
> Attachments: AMBARI-14926.patch
>
>
> 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
> monitoring fail:
> * datanodes are seen up in global live datanodes
> * but the service is down into the host service list (restart will work, but
> are marked as stopped)
> 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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