Github user tillrohrmann commented on a diff in the pull request:
https://github.com/apache/flink/pull/750#discussion_r46172767
--- Diff:
flink-runtime/src/main/java/org/apache/flink/runtime/executiongraph/Execution.java
---
@@ -402,21 +405,53 @@ public void onComplete(Throwable failure, Object
success) throws Throwable {
}
}
+ public void stop() {
+ // sends stop RPC call
+
+ final SimpleSlot slot = this.assignedResource;
+
+ if (slot != null) {
+ final ActorGateway gateway =
slot.getInstance().getActorGateway();
+
+ Future<Object> stopResult = gateway.retry(
+ new StopTask(attemptId),
+ NUM_STOP_CALL_TRIES,
+ timeout,
+ executionContext);
+
+ stopResult.onComplete(new OnComplete<Object>() {
+ @Override
+ public void onComplete(Throwable failure,
Object success) throws Throwable {
+ if (failure != null) {
+ fail(new Exception("Task could
not be stopped.", failure));
+ } else {
+ TaskOperationResult result =
(TaskOperationResult) success;
+ if (!result.success()) {
+ LOG.debug("Stopping
task call did not find task. Probably akka message call race.");
--- End diff --
In the case of an unsuccessful `TaskOperationResult` it might be
interesting to also log the `description` field.
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