Deadlock occuring when a config POST occurs concurrently with a json api GET on same project.

Threaddump:

Found one Java-level deadlock:
=============================

"Handling GET /hudson/job/the_Build/api/json : http-8080-24":
waiting to lock Monitor@0x0000000053162e70 (Object@0x00002aaaf87e9ab8, a java/util/Vector),
which is held by "Handling POST /hudson/job/The_Build/configSubmit : http-8080-31"
"Handling POST /hudson/job/The_Build/configSubmit : http-8080-31":
waiting to lock Monitor@0x0000000052eefc20 (Object@0x00002aaab8119e08, a hudson/maven/MavenModuleSet),
which is held by "Handling GET /hudson/job/the_Build/api/json : http-8080-24"

Found a total of 1 deadlock.