[ 
https://issues.apache.org/jira/browse/FLINK-9456?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16526539#comment-16526539
 ] 

ASF GitHub Bot commented on FLINK-9456:
---------------------------------------

Github user tillrohrmann commented on a diff in the pull request:

    https://github.com/apache/flink/pull/6132#discussion_r198493145
  
    --- Diff: 
flink-runtime/src/test/java/org/apache/flink/runtime/resourcemanager/slotmanager/SlotManagerTest.java
 ---
    @@ -1202,6 +1209,111 @@ public void testSlotRequestFailure() throws 
Exception {
                }
        }
     
    +   /**
    +    * Tests notify the job manager when the task manager is failed/killed.
    +    */
    +   @Test
    +   public void testNotifyTaskManagerFailed() throws Exception {
    +
    +           final List<Tuple4<JobID, ResourceID, Set<AllocationID>, 
Exception>> notifiedTaskManagerInfos = new ArrayList<>();
    +
    +           try (final SlotManager slotManager = 
createSlotManager(ResourceManagerId.generate(), new TestingResourceActions() {
    +                   @Override
    +                   public void notifyTaskManagerTerminated(JobID jobId, 
ResourceID resourceID, Set<AllocationID> allocationIDs, Exception cause) {
    +                           notifiedTaskManagerInfos.add(new 
Tuple4<>(jobId, resourceID, allocationIDs, cause));
    +                   }
    +           })) {
    --- End diff --
    
    Indentation looks a bit off here


> Let ResourceManager notify JobManager about failed/killed TaskManagers
> ----------------------------------------------------------------------
>
>                 Key: FLINK-9456
>                 URL: https://issues.apache.org/jira/browse/FLINK-9456
>             Project: Flink
>          Issue Type: Improvement
>          Components: Distributed Coordination
>    Affects Versions: 1.5.0
>            Reporter: Till Rohrmann
>            Assignee: Sihua Zhou
>            Priority: Major
>              Labels: pull-request-available
>             Fix For: 1.6.0, 1.5.1
>
>
> Often, the {{ResourceManager}} learns faster about TaskManager 
> failures/killings because it directly communicates with the underlying 
> resource management framework. Instead of only relying on the 
> {{JobManager}}'s heartbeat to figure out that a {{TaskManager}} has died, we 
> should additionally send a signal from the {{ResourceManager}} to the 
> {{JobManager}} if a {{TaskManager}} has died. That way, we can react faster 
> to {{TaskManager}} failures and recover our running job/s.



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