It seems that Paul was asking about if STAX variables defined in one job could effect STAX variables defined in another job (to which I answered this should not be occurring).
But it seems that Joe is talking about the scope of STAX variables within a single STAX job. These are different topics. Note that there is a lot of good information about the scope of STAX variables in the "STAXGlobal Class" section in the STAX User's Guide at http://staf.sourceforge.net/current/STAX/staxug.html#STAXGlobal_Class. Paul, for those STAX variables that you're having problems with, what is the output of type(variableName)? For example, to get the type of variables named x and y, you could do: <log message="1"> 'type(x)=%s, type(y)=%s' % (type(x), type(y)) </log> Are they all the same type? What type(s) are they? When you say that "Python complains that an instance of class X does not have attribute Y", is this for a Python class that you defined within your STAX job or that you imported from a Python module? If it's for an imported Python module, is it for one that may have been changed while the STAX service is running? If so, make sure you've read section "4.1.6 Why aren't changes to imported Python modules picked up in my STAX job?" in the STAF/STAX FAQ at http://staf.sourceforge.net/current/STAFFAQ.htm#d0e2105. -------------------------------------------------------------- Sharon Lucas IBM Austin, luc...@us.ibm.com (512) 286-7313 or Tieline 363-7313 Joseph J Veilleux/Lexington/i...@ibmus 03/05/2010 08:11 AM To Paul Ellsworth/San Jose/i...@ibmus cc staf-users@lists.sourceforge.net Subject Re: [staf-users] Python variable scope ... between jobs? Paul -- Yes, I have seen this kind of error and the pattern of failure seemed to be just as you observed. In particular the complaint that an object doesn't have a specific attribute. My experience suggests that you are on the right track -- the problem is with variable scoping. There are some very odd scoping rules for python variables in the context of a STAX job so you have to work through all the variations of STAX function scope, where your variables are declared, whether or not you use the STAXGlobal() wrapper class, etc. This was a few months ago that I was encountering these problems so it's a little difficult to remember the precise details of the solution but I'm pretty sure it was to declare/populate my main control structures in my main STAX function, with the structure declared as a STAXGlobal. Using that strategy I haven't had any problems recently. So -- I think you're on the right track. Oh -- one other thing -- I think your observation about the multiple threads is on-target too. I found that some of these problems happened when I was using a <paralleliterate> element to do something simultaneously on each of four target machines, and in particular if I got a STAX execution error (e.g. Python syntax error or NameError or something like that) on one of the threads. I believe under such circumstances I would see the STAX job hang, as though it wasn't recognizing that all the threads were finished. I was more focused on finding a solution that would work rather than thoroughly diagnosing and documenting the problem, so I don't have any detailed notes on what works and what doesn't... sorry. ---------------------------------------------------------------------------------------- Joe Veilleux IBM/Lotus Domino Server Quality Engineering 550 King Street Littleton MA 01460 Email: joeveill...@us.ibm.com Paul Ellsworth---03/04/2010 03:32:01 PM---Hello, Paul Ellsworth/San Jose/i...@ibmus 03/04/2010 03:24 PM To staf-users@lists.sourceforge.net cc Subject [staf-users] Python variable scope ... between jobs? Hello, I sometimes have strange python (/jython... I will probably refer to it as python though...) variable issues - e.g., it values from one variable end up in another variable for whatever reason, or a class somehow gets messed up and Python complains that an instance of class X does not have attribute Y when I know for a fact that it does :) This happens *much* more frequently when many jobs are running (10 or more... large jobs; if they all completed, they would generate over 100,000 user logs, not sure how many non-user logs, use around 20 XML files that can have up to 4000 lines in them, etc). I'm working through possible variable scope issues... question is: is there a possibility that the python variables/scope/maybe shared memory is getting mixed up or leaked amongst the many running jobs? Not necessarily saying this is happening but asking if it is possible while I explore various reasons it may be happening... :) It also seems to happen more frequently when multiple jobs are running through the same XML sections (and thus the same python/jython scripting) at the same time... Thanks! Paul ------------------------------------------------------------------------------ Download Intel® Parallel Studio Eval Try the new software tools for yourself. Speed compiling, find bugs proactively, and fine-tune applications for parallel performance. See why Intel Parallel Studio got high marks during beta. http://p.sf.net/sfu/intel-sw-dev _______________________________________________ staf-users mailing list staf-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/staf-users ------------------------------------------------------------------------------ Download Intel® Parallel Studio Eval Try the new software tools for yourself. Speed compiling, find bugs proactively, and fine-tune applications for parallel performance. See why Intel Parallel Studio got high marks during beta. http://p.sf.net/sfu/intel-sw-dev _______________________________________________ staf-users mailing list staf-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/staf-users
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