[GCS] global state query node info table from GCS. (#8498)

python/ray/tests/conftest.py

@@ -105,8 +105,10 @@ def _ray_start_cluster(**kwargs):
     remote_nodes = []
     for _ in range(num_nodes):
         remote_nodes.append(cluster.add_node(**init_kwargs))
-    if do_init:
-        ray.init(address=cluster.address)
+        # We assume driver will connect to the head (first node),
+        # so ray init will be invoked if do_init is true
+        if len(remote_nodes) == 1 and do_init:
+            ray.init(address=cluster.address)
     yield cluster
     # The code after the yield will run as teardown code.
     ray.shutdown()