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From "Tom Beerbower" <tbeerbo...@hortonworks.com>
Subject Re: Review Request 30708: RU - Prepare Namenode fails on Ubuntu12 due to path error with import
Date Mon, 09 Feb 2015 15:59:05 GMT

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https://reviews.apache.org/r/30708/#review71637
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Ship it!


Ship It!

- Tom Beerbower


On Feb. 7, 2015, 1:16 a.m., Alejandro Fernandez wrote:
> 
> -----------------------------------------------------------
> This is an automatically generated e-mail. To reply, visit:
> https://reviews.apache.org/r/30708/
> -----------------------------------------------------------
> 
> (Updated Feb. 7, 2015, 1:16 a.m.)
> 
> 
> Review request for Ambari, Dmitro Lisnichenko, Jonathan Hurley, Nate Cole, Tom Beerbower,
and Yurii Shylov.
> 
> 
> Bugs: AMBARI-9507
>     https://issues.apache.org/jira/browse/AMBARI-9507
> 
> 
> Repository: ambari
> 
> 
> Description
> -------
> 
> Prepare namenode failed during RU on Ubuntu12, retry does not help.
> 
> This is because ru_execute_task.py calls python directly, instead of the python wrapper
that appends several other directories to the PYTHONPATH environment variable, which is needed
by the module imports.
> 
> ```
> 2015-02-03 03:11:47,374 - Task. Type: EXECUTE, Script: scripts/namenode.py - Function:
prepare_rolling_upgrade
> 2015-02-03 03:11:47,395 - call['python /var/lib/ambari-agent/cache/common-services/HDFS/2.1.0.2.0/package/scripts/namenode.py
prepare_rolling_upgrade /var/lib/ambari-agent/data/command-274.json /var/lib/ambari-agent/cache/custom_actions
/var/lib/ambari-agent/data/structured-out-274.json INFO /var/lib/ambari-agent/data/tmp'] {}
> 2015-02-03 03:11:47,451 - Command: python /var/lib/ambari-agent/cache/common-services/HDFS/2.1.0.2.0/package/scripts/namenode.py
prepare_rolling_upgrade /var/lib/ambari-agent/data/command-274.json /var/lib/ambari-agent/cache/custom_actions
/var/lib/ambari-agent/data/structured-out-274.json INFO /var/lib/ambari-agent/data/tmp
> Code: 1, Out: Traceback (most recent call last):
>   File "/var/lib/ambari-agent/cache/common-services/HDFS/2.1.0.2.0/package/scripts/namenode.py",
line 24, in <module>
>     from resource_management import *
> ImportError: No module named resource_management
> 2015-02-03 03:11:47,452 - Error while executing command 'actionexecute':
> Traceback (most recent call last):
>   File "/usr/lib/python2.6/site-packages/resource_management/libraries/script/script.py",
line 184, in execute
>     method(env)
>   File "/var/lib/ambari-agent/cache/custom_actions/scripts/ru_execute_tasks.py", line
146, in actionexecute
>     raise Fail(out)
> Fail: Traceback (most recent call last):
>   File "/var/lib/ambari-agent/cache/common-services/HDFS/2.1.0.2.0/package/scripts/namenode.py",
line 24, in <module>
>     from resource_management import *
> ImportError: No module named resource_management
> ```
> 
> 
> Diffs
> -----
> 
>   ambari-server/src/main/resources/custom_actions/scripts/ru_execute_tasks.py 02c449f

>   ambari-server/src/test/python/custom_actions/test_ru_execute_tasks.py PRE-CREATION

>   ambari-server/src/test/resources/custom_actions/ru_execute_tasks_namenode_prepare.json
PRE-CREATION 
> 
> Diff: https://reviews.apache.org/r/30708/diff/
> 
> 
> Testing
> -------
> 
> Verified that this works during a Rolling Upgrade on an Ubuntu cluster.
> 
> Unit tests are in progress.
> 
> 
> Thanks,
> 
> Alejandro Fernandez
> 
>


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