aljoscha commented on issue #8280: [FLINK-12297]Harden ClosureCleaner to handle the wrapped function URL: https://github.com/apache/flink/pull/8280#issuecomment-501186802 I simplified the recursion and fixed the stack overflow error (the problem was that the ClosureCleaner was recursing into primitive types/wrappers and would get stuck on `Long.MIN_VALUE`. You can see this yourself by printing the name of the field when recursing). You can see my changes here: https://github.com/aljoscha/flink/commits/pr/8280-closure-cleaner. If Travis is green on this I would merge, if you're OK with the changes.
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