Found one Java-level deadlock:
=============================
"epollEventLoopGroup-5-1":
waiting to lock monitor 0x00007f5e640309a8 (object 0x00000000f5b8aa00, a org.opendaylight.bgpcep.pcep.topology.provider.session.stats.SessionStateImpl),
which is held by "globalEventExecutor-1-1"
"globalEventExecutor-1-1":
waiting to lock monitor 0x00007f5e54008de8 (object 0x00000000f5b80940, a org.opendaylight.bgpcep.pcep.topology.provider.Stateful07TopologySessionListener),
which is held by "epollEventLoopGroup-5-1"