Thanks David. But do I need to install virtualenv on every node in hadoop cluster? Actually I am not very sure whether same namenodes are assigned for my every hadoop job. So how shall I proceed on such scenario. Thanks for your inputs. Kartik On Feb 11, 2015 1:56 AM, "Daπid" wrote:

On 11 February 2015 at 03:38, Kartik Kumar Perisetla wrote:

...

Also, I don't have root access thus, can't install numpy or any other package on cluster

You can create a virtualenv, and install packages on it without needing root access. To minimize trouble, you can ensure it uses the system packages when available. Here are instructions on how to install it:

https://stackoverflow.com/questions/9348869/how-to-install-virtualenv-withou...

http://opensourcehacker.com/2012/09/16/recommended-way-for-sudo-free-install...

This does not require root access, but it is probably good to check with the sysadmins to make sure they are fine with it.

/David. _______________________________________________ NumPy-Discussion mailing list NumPy-Discussion@scipy.org http://mail.scipy.org/mailman/listinfo/numpy-discussion

Hi David, Thanks for your response. But I can't install anything on cluster. *Could anyone please help me understand how the file 'multiarray.so' is used by the tagger. I mean how it is loaded( I assume its some sort of DLL for windows and shared library for unix based systems). Is it a module or what?* Right now what I did is I packaged numpy so that numpy will be present at the current working directory for mapper and reducer. So now control goes into numpy packaged alongwith mapper. But still right now I see such error: *File "glossextractionengine.mod/nltk/tag/__init__.py", line 123, in pos_tag File "glossextractionengine.mod/pickle.py", line 1380, in load return doctest.testmod() File "glossextractionengine.mod/pickle.py", line 860, in load return stopinst.value File "glossextractionengine.mod/pickle.py", line 1092, in load_global dispatch[GLOBAL] = load_global File "glossextractionengine.mod/pickle.py", line 1126, in find_class klass = getattr(mod, name) File "numpy.mod/numpy/__init__.py", line 137, in <module> File "numpy.mod/numpy/add_newdocs.py", line 13, in <module> File "numpy.mod/numpy/lib/__init__.py", line 4, in <module> File "numpy.mod/numpy/lib/type_check.py", line 21, in <module> File "numpy.mod/numpy/core/__init__.py", line 9, in <module> ImportError: No module named multiarray* In this case the file 'multiarray.so' is present in within core package only, but it is still not found. Can anyone throw some light on it. Thanks! Kartik On Wed, Feb 11, 2015 at 7:17 AM, Daπid wrote:

On 11 February 2015 at 08:06, Kartik Kumar Perisetla wrote:

...

Thanks David. But do I need to install virtualenv on every node in hadoop cluster? Actually I am not very sure whether same namenodes are assigned for my every hadoop job. So how shall I proceed on such scenario.

I have never used hadoop, but in the clusters I have used, you have a home folder on the central node, and each and every computing node has access to it. You can then install Python in your home folder and make every node run that, or pull a local copy.

Probably the cluster support can clear this up further and adapt it to your particular case.

/David. _______________________________________________ NumPy-Discussion mailing list NumPy-Discussion@scipy.org http://mail.scipy.org/mailman/listinfo/numpy-discussion

-- Regards, Kartik Perisetla