Github user beyond1920 commented on a diff in the pull request:
https://github.com/apache/flink/pull/2389#discussion_r75793093
--- Diff:
flink-runtime/src/main/java/org/apache/flink/runtime/rpc/resourcemanager/ResourceManager.java
---
@@ -94,26 +130,218 @@ public RegistrationResponse apply(final
JobMasterGateway jobMasterGateway) {
* @return Slot assignment
*/
@RpcMethod
- public SlotAssignment requestSlot(SlotRequest slotRequest) {
- System.out.println("SlotRequest: " + slotRequest);
- return new SlotAssignment();
+ public AcknowledgeSlotRequest requestSlot(SlotRequest slotRequest) {
+ // TODO slotManager.requestSlot(slotRequest);
+ return new
AcknowledgeSlotRequest(slotRequest.getAllocationID());
}
/**
- *
- * @param resourceManagerLeaderId The fencing token for the
ResourceManager leader
- * @param taskExecutorAddress The address of the TaskExecutor that
registers
- * @param resourceID The resource ID of the TaskExecutor
that registers
+ * @param resourceManagerLeaderId The fencing token for the
ResourceManager leader
+ * @param taskExecutorAddress The address of the TaskExecutor that
registers
+ * @param resourceID The resource ID of the TaskExecutor
that registers
*
* @return The response by the ResourceManager.
*/
@RpcMethod
- public org.apache.flink.runtime.rpc.registration.RegistrationResponse
registerTaskExecutor(
- UUID resourceManagerLeaderId,
- String taskExecutorAddress,
- ResourceID resourceID) {
+ public
Future<org.apache.flink.runtime.rpc.registration.RegistrationResponse>
registerTaskExecutor(
+ final UUID resourceManagerLeaderId,
+ final String taskExecutorAddress,
+ final ResourceID resourceID
+ ) {
+ log.info("received register from taskExecutor {}, address {}",
resourceID, taskExecutorAddress);
+ Future<TaskExecutorGateway> taskExecutorFuture =
+ getRpcService().connect(taskExecutorAddress,
TaskExecutorGateway.class);
+
+ return taskExecutorFuture.map(new Mapper<TaskExecutorGateway,
org.apache.flink.runtime.rpc.registration.RegistrationResponse>() {
+ @Override
+ public
org.apache.flink.runtime.rpc.registration.RegistrationResponse apply(final
TaskExecutorGateway taskExecutorGateway) {
+ // decline registration if resourceManager
cannot connect to the taskExecutor using the given address
+ if(taskExecutorGateway == null) {
+ log.warn("resourceManager {} decline
registration from the taskExecutor {}, cannot connect to it using given address
{} ",
+ getAddress(), resourceID,
taskExecutorAddress);
+ return new
org.apache.flink.runtime.rpc.registration.RegistrationResponse.Decline("cannot
connect to taskExecutor using given address");
+ } else {
+ // save the register taskExecutor
gateway
+ taskExecutorGateways.put(resourceID,
taskExecutorGateway);
+ // schedule the heartbeat with the
registered taskExecutor
+
ResourceManagerToTaskExecutorHeartbeatScheduler heartbeatScheduler = new
ResourceManagerToTaskExecutorHeartbeatScheduler(
+ ResourceManager.this,
leaderSessionID, taskExecutorGateway, taskExecutorAddress, resourceID, log);
+ heartbeatScheduler.start();
+ heartbeatSchedulers.put(resourceID,
heartbeatScheduler);
+ return new
TaskExecutorRegistrationSuccess(new InstanceID(),
heartbeatScheduler.getHeartbeatInterval());
+ }
+ }
+ }, getMainThreadExecutionContext());
+
+ }
+
+ /**
+ * notify resource failure to resourceManager, because of two reasons:
+ * 1. cannot keep heartbeat with taskManager for several times, mark
the resource as failed
+ * 2. in some corner cases, TM will be marked as invalid by cluster
manager master(e.g. yarn master), but TM itself does not realize.
+ *
+ * @param resourceID identify the taskManager which to stop
+ */
+ @RpcMethod
+ public void notifyResourceFailure(ResourceID resourceID) {
+ log.warn("receive failure notification of resource {}",
resourceID);
+ TaskExecutorGateway taskManager =
taskExecutorGateways.get(resourceID);
+ if(taskManager == null) {
+ // ignore command to stop an unregister taskManager
+ log.warn("ignore stop taskManager command because {} is
unregistered", resourceID);
+ } else {
+ taskExecutorGateways.remove(resourceID);
+ closeHeartbeatToResourceIfExist(resourceID);
+ // TODO notify slotManager and notify jobMaster,
+ // TODO
slotManager.notifyTaskManagerFailure(resourceID);
+ taskManager.shutDown(leaderSessionID);
--- End diff --
good
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