Steps to reproduce:

1) Execute a pipeline script where you kick off 3 'sh' commands that each is going to produce an .xml file. 

2) As the last step of execution save the xml reports using junit plugin 

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Exp.res.: All .xml files should be picked up by junit plugin

Act.res.: Only 1 .xml file is being picked up by junit plugin.

Notes: I also archive all the files and I can see all expected .xml being successfully created and archived ,but not picked up by junit plugin. Also if I run all my 'sh' commands in sequence (not using 'parallel' ,all .xml files are being picked up by junit plugin).