I am getting below mentioned logs randomly and after some time the system is dead.
> at org.apache.lucene.util.automaton.Operations.topoSortStatesRecurse(Operations.java:1309) ~[lucene-core-6.4.1.jar:6.4.1 72f75b2503fa0aa4f0aff76d439874feb923bb0e - jpountz - 2017-02-01 14:43:32]
We are using below config:
"number" : "5.2.1", "build_hash" : "db0d481", "build_date" : "2017-02-09T22:05:32.386Z", "build_snapshot" : false, "lucene_version" : "6.4.1"