Why does createrepo crash with the traceback error "MemoryError" With Nexus Professional ?

Issue

• Running createrepo on large number of rpms crashes with the following traceback.

:Traceback (most recent call last): 
: File "/usr/share/createrepo/genpkgmetadata.py", line 292, in <module> 
: main(sys.argv[1:]) 
: File "/usr/share/createrepo/genpkgmetadata.py", line 266, in main 
: mdgen.doPkgMetadata() 
: File "/usr/lib/python2.6/site-packages/createrepo/__init__.py", line 413, in doPkgMetadata 
: self.writeMetadataDocs(packages) 
: File "/usr/lib/python2.6/site-packages/createrepo/__init__.py", line 568, in writeMetadataDocs 
: self.flfile.write(old_po.xml_dump_filelists_metadata()) 
: File "/usr/lib/python2.6/site-packages/yum/packages.py", line 1218, in xml_dump_filelists_metadata 
: msg += misc.to_unicode(self._dump_files()) 
:MemoryError