IMap.lock/unlock in HazelcastSessionManager

[borneolang]

For example, we have such code snippet in findSession:

sessionMap.lock(id);
try {
    sessionMap.remove(id);
    sessionMap.set(id, hazelcastSession);
} finally {
    sessionMap.unlock(id);
}

What happens if a lock holder dies between lock and unlock (orchestrator can execute kill -9 )? Maybe sessionMap.lock(..) with leaseTime would be better?