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https://issues.apache.org/jira/browse/FLINK-8746?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16374600#comment-16374600
 ] 

ASF GitHub Bot commented on FLINK-8746:
---------------------------------------

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

    https://github.com/apache/flink/pull/5560#discussion_r170300254
  
    --- Diff: 
flink-runtime/src/main/java/org/apache/flink/runtime/jobmaster/JobMaster.java 
---
    @@ -534,42 +536,94 @@ public void postStop() throws Exception {
     
                // 4. take a savepoint
                final CompletableFuture<String> savepointFuture = 
triggerSavepoint(
    -                   jobMasterConfiguration.getTmpDirectory(),
    -                   timeout);
    +                   null,
    +                   timeout)
    +                   .handleAsync(
    +                           (String savepointPath, Throwable throwable) -> {
    +                                   if (throwable != null) {
    +                                           final Throwable 
strippedThrowable = ExceptionUtils.stripCompletionException(throwable);
    +                                           if (strippedThrowable 
instanceof CheckpointTriggerException) {
    +                                                   final 
CheckpointTriggerException checkpointTriggerException = 
(CheckpointTriggerException) strippedThrowable;
    +
    +                                                   if 
(checkpointTriggerException.getCheckpointDeclineReason() == 
CheckpointDeclineReason.NOT_ALL_REQUIRED_TASKS_RUNNING) {
    +                                                           return 
lastInternalSavepoint;
    +                                                   } else {
    +                                                           throw new 
CompletionException(checkpointTriggerException);
    +                                                   }
    +                                           } else {
    +                                                   throw new 
CompletionException(strippedThrowable);
    +                                           }
    +                                   } else {
    +                                           final String savepointToDispose 
= lastInternalSavepoint;
    --- End diff --
    
    I think `savepointToDispose` be `null`.


> Support rescaling of jobs which are not fully running
> -----------------------------------------------------
>
>                 Key: FLINK-8746
>                 URL: https://issues.apache.org/jira/browse/FLINK-8746
>             Project: Flink
>          Issue Type: Improvement
>          Components: Distributed Coordination
>    Affects Versions: 1.5.0
>            Reporter: Till Rohrmann
>            Assignee: Till Rohrmann
>            Priority: Major
>              Labels: flip-6
>             Fix For: 1.5.0
>
>
> We should support the rescaling of jobs which are only partially running. 
> Currently, this fails because rescaling requires to take a savepoint. We can 
> solve the problem by falling back to the latest rescaling savepoint.



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