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From Jonathan Hurley <jhur...@hortonworks.com>
Subject Re: Failed on: Pre Upgrade HDFS when Rolling Upgrade from HDP-2.2.6.0 to HDP-2.4.0.0
Date Sat, 02 Apr 2016 13:58:30 GMT
You're probably running into https://issues.apache.org/jira/browse/AMBARI-15617

Check to make sure that /var/lib/ambari-agent/tmp does not have "ambari_commons" as a directory/symlink
inside of it. If it does, you should remove it. It's probably adding an older version of the
common library to your python path.

On Mar 30, 2016, at 9:43 PM, li liren <fjsllr@gmail.com<mailto:fjsllr@gmail.com>>
wrote:

Hi, Alejandro

I use ambari-2.2.1

Thanks, liren

On Thu, Mar 31, 2016, 2:06 AM Alejandro Fernandez <afernandez@hortonworks.com<mailto:afernandez@hortonworks.com>>
wrote:
Which version of Ambari are you on?
I suspect it's because you have to remove

from resource_management.libraries.functions import *

And then start importing modules by name.

Thanks,Alejandro

From: li liren <fjsllr@gmail.com<mailto:fjsllr@gmail.com>>
Reply-To: "user@ambari.apache.org<mailto:user@ambari.apache.org>" <user@ambari.apache.org<mailto:user@ambari.apache.org>>
Date: Wednesday, March 30, 2016 at 1:45 AM
To: "user@ambari.apache.org<mailto:user@ambari.apache.org>" <user@ambari.apache.org<mailto:user@ambari.apache.org>>
Subject: Failed on: Pre Upgrade HDFS when Rolling Upgrade from HDP-2.2.6.0 to HDP-2.4.0.0


hi, all

I encount a problem when Rolling Upgrade from HDP-2.2.6.0 to HDP-2.4.0.0.

Failed on: Pre Upgrade HDFS Stage, the error like follows:

2016-03-30 16:17:20,789 - Task. Type: EXECUTE, Script: scripts/namenode.py - Function: prepare_rolling_upgrade
Traceback (most recent call last):
  File "/var/lib/ambari-agent/cache/common-services/HDFS/2.1.0.2.0/package/scripts/namenode.py",
line 28, in <module>
    from resource_management import Script
  File "/usr/lib/python2.6/site-packages/resource_management/__init__.py", line 23, in <module>
    from resource_management.libraries import *
  File "/usr/lib/python2.6/site-packages/resource_management/libraries/__init__.py", line
23, in <module>
    from resource_management.libraries.functions import *
  File "/usr/lib/python2.6/site-packages/resource_management/libraries/functions/__init__.py",
line 25, in <module>
    from resource_management.libraries.functions.default import *
  File "/usr/lib/python2.6/site-packages/resource_management/libraries/functions/default.py",
line 24, in <module>
    from resource_management.libraries.script import Script
  File "/usr/lib/python2.6/site-packages/resource_management/libraries/script/__init__.py",
line 23, in <module>
    from resource_management.libraries.script.script import *
  File "/usr/lib/python2.6/site-packages/resource_management/libraries/script/script.py",
line 32, in <module>
    from ambari_commons.constants import UPGRADE_TYPE_NON_ROLLING, UPGRADE_TYPE_ROLLING
ImportError: cannot import name UPGRADE_TYPE_NON_ROLLING


what should I do, or check something?

Best Regards.





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