[MC-138286] Exception in server tick loop

Possible Duplicate of ~~MC-129492~~ however not sure the cause is the same.

Have flagged as private as logs contain UUID's of players, names and possibly conversations. If this is unwarranted please correct.

-Xss320K -Xms8G -Xmx8G
Crash after 9hrs with average of 1 player

Appears as a memory leak however did not get the heap out of space message.

We do have a custom datapack but extensive troubleshooting could not identify that as the issue. I am now going to disable the datapack and run the server whitelisted to see if the problem persists.

18w43c: crash-2018-10-28_09.39.10-server.txt

Description: Exception in server tick loop

java.lang.StackOverflowError: Exception in server tick loop
	at java.util.HashMap.hash(HashMap.java:339)
	at java.util.LinkedHashMap.get(LinkedHashMap.java:440)
	at qd.b(SourceFile:308)
	at qd.g(SourceFile:372)
	at qd.f(SourceFile:349)
	at qd.e(SourceFile:322)
	at qd.e(SourceFile:338)
	at qd.e(SourceFile:342)
	at qd.e(SourceFile:338)
	at qd.e(SourceFile:342)
	...