Github user GJL commented on a diff in the pull request:
https://github.com/apache/flink/pull/5088#discussion_r155276432
--- Diff:
flink-runtime/src/main/java/org/apache/flink/runtime/jobmanager/slots/SlotContext.java
---
@@ -0,0 +1,61 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.flink.runtime.jobmanager.slots;
+
+import org.apache.flink.runtime.clusterframework.types.AllocationID;
+import org.apache.flink.runtime.instance.Slot;
+import org.apache.flink.runtime.taskmanager.TaskManagerLocation;
+
+/**
+ * Interface for the context of a logical {@link Slot}. This context
contains information
+ * about the underlying allocated slot and how to communicate with the
TaskManager on which
+ * it was allocated.
+ */
+public interface SlotContext {
+
+ /**
+ * Gets the ID under which the slot is allocated, which uniquely
identifies the slot.
+ *
+ * @return The ID under which the slot is allocated
+ */
+ AllocationID getAllocationId();
+
+ /**
+ * Gets the location info of the TaskManager that offers this slot.
+ *
+ * @return The location info of the TaskManager that offers this slot
+ */
+ TaskManagerLocation getTaskManagerLocation();
+
+ /**
+ * Gets the number of the slot.
+ *
+ * @return The number of the slot on the TaskManager.
+ */
+ int getPhysicalSlotNumber();
+
+ /**
+ * Gets the actor gateway that can be used to send messages to the
TaskManager.
+ * <p>
+ * This method should be removed once the new interface-based RPC
abstraction is in place
+ *
+ * @return The actor gateway that can be used to send messages to the
TaskManager.
--- End diff --
The fact that `TaskManagerGateway` can be an *actor gateway* is not
something that is relevant for the Javadoc.
---
