RuntimeError: maximum recursion depth exceeded

[ryszard314159]

I encountered the problem after running WikiExtractor.py on a wiki dump for extended period of time (few days).

$ uname -a
Darwin imac.home 13.4.0 Darwin Kernel Version 13.4.0: Wed Dec 17 19:05:52 PST 2014; root:xnu-2422.115.10~1/RELEASE_X86_64 x86_64
$
$ ls -l ~/Downloads/enwiki-latest-pages-articles.xml.bz2
-rw-r-----@ 1 ryszard 501 11935745192 May 31 19:13 /Users/ryszard/Downloads/enwiki-latest-pages-articles.xml.bz
$
$ ~/util/Python/WikiExtractor.py -c -o extracted ~/Downloads/enwiki-latest-pages-articles.xml.bz2
[...]
INFO: 21637400 1976 American Airlines Tennis Games – Doubles
INFO: 21637471 Missouri River Runner
INFO: 21637508 Angelika Knipping
INFO: 21637520 List of reporters for ITV News
INFO: 21637542 Rizzani de Eccher
Exception in thread Thread-1:
Traceback (most recent call last):
File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/threading.py", line 808, in bootstrap_inner
self.run()
File "/Users/ryszard/util/Python/WikiExtractor.py", line 2335, in run
job.extract(self._splitter)
[...]
[... many lines deleted ...]
[...]
instantiated = template.subst(params, self)
File "/Users/ryszard/util/Python/WikiExtractor.py", line 301, in subst
return ''.join([tpl.subst(params, extractor, depth) for tpl in self])
File "/Users/ryszard/util/Python/WikiExtractor.py", line 351, in subst
paramName = self.name.subst(params, extractor, depth+1)
File "/Users/ryszard/util/Python/WikiExtractor.py", line 294, in subst
logging.debug('subst tpl (%d, %d) %s', len(extractor.frame), depth, self)
File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/logging/__init.py", line 1619, in debug
root.debug(msg, _args, *_kwargs)
File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/logging/init.py", line 1136, in debug
if self.isEnabledFor(DEBUG):
File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/logging/init.py", line 1348, in isEnabledFor
return level >= self.getEffectiveLevel()
RuntimeError: maximum recursion depth exceeded

[attardi]

This problem has been fixed in version 2.34.

Article n. 21637542 uses the template:

{{OTRS|celebrative|date=April 2015}}

which contains a recursive call to itself:

{{tmbox
|type=content
|image=[[Image:OTRS Wikimedia.svg|75px|OTRS icon]]
|text=This article is the subject of a request emailed to the [[Wikipedia:Volunteer Response Team|Wikimedia Volunteer Response Team]].<br />
Issues identified are: ''{{{issue|issue=please give a specific explanation like this: <nowiki>{{OTRS|what needs to be done}}</nowiki>}}}'''''<br />
The OTRS ticket number is [https://ticket.wikimedia.org/otrs/index.pl?Action=AgentTicketSearch&Subaction=Search&TicketNumber={{{otrs|''otrs=please insert OTRS ticket number here''}}} {{{otrs}}}].<br />
{{#ifeq: {{{discuss| }}}|{{{discuss|no}}}| |<span style="font-size: 90%">
Please discuss these issues here, being mindful of the policies on [[Wikipedia:Biographies of living persons|biographies of living persons]].</span>}}
}}

It is clearly a malformed template.