[HOTFIX] Fix master build with missing placement group argument (#9868)

* fix common task submit default placement group

* fix java_function

python/ray/cross_language.py

@@ -68,7 +68,10 @@ def java_function(class_name, function_name):
         None,  # resources,
         None,  # num_return_vals,
         None,  # max_calls,
-        None)  # max_retries)
+        None,  # max_retries
+        placement_group_id=None,
+        # TODO(ekl) set default to -1 once we support -1 as "any index"
+        placement_group_bundle_index=0)
 
 
 def java_actor_class(class_name):

src/ray/core_worker/lib/java/io_ray_runtime_task_NativeTaskSubmitter.cc

@@ -197,9 +197,11 @@ JNIEXPORT jobject JNICALL Java_io_ray_runtime_task_NativeTaskSubmitter_nativeSub
 
   std::vector<ObjectID> return_ids;
   // TODO (kfstorm): Allow setting `max_retries` via `CallOptions`.
-  ray::CoreWorkerProcess::GetCoreWorker().SubmitTask(ray_function, task_args,
-                                                     task_options, &return_ids,
-                                                     /*max_retries=*/0);
+  ray::CoreWorkerProcess::GetCoreWorker().SubmitTask(
+      ray_function, task_args, task_options, &return_ids,
+      /*max_retries=*/0,
+      /*placement_options=*/
+      std::pair<ray::PlacementGroupID, int64_t>(ray::PlacementGroupID::Nil(), 0));
 
   // This is to avoid creating an empty java list and boost performance.
   if (return_ids.empty()) {