presto-main/src/main/java/io/prestosql/operator/JoinBridgeManager.java/SharedInternalJoinBridgeDataManager/probeOperatorCreated
class SharedInternalJoinBridgeDataManager:        @Override
        public void probeOperatorCreated(Lifespan lifespan)
        {
            checkArgument(!Lifespan.taskWide().equals(lifespan), "build operator should not produce or destroy probes");
            joinLifecycle.retainForProbe();
        }