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https://issues.apache.org/jira/browse/FLINK-5473?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15834374#comment-15834374
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ASF GitHub Bot commented on FLINK-5473:
---------------------------------------

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

    https://github.com/apache/flink/pull/3182#discussion_r97283204
  
    --- Diff: 
flink-runtime/src/main/java/org/apache/flink/runtime/executiongraph/ExecutionVertex.java
 ---
    @@ -599,7 +602,24 @@ TaskDeploymentDescriptor createDeploymentDescriptor(
                boolean lazyScheduling = 
getExecutionGraph().getScheduleMode().allowLazyDeployment();
     
                for (IntermediateResultPartition partition : 
resultPartitions.values()) {
    -                   
producedPartitions.add(ResultPartitionDeploymentDescriptor.from(partition, 
lazyScheduling));
    +
    +                   List<List<ExecutionEdge>> consumers = 
partition.getConsumers();
    +
    +                   if(consumers.isEmpty()) {
    --- End diff --
    
    whitespace missing between `if` and `(`


> setMaxParallelism() higher than 1 is possible on non-parallel operators
> -----------------------------------------------------------------------
>
>                 Key: FLINK-5473
>                 URL: https://issues.apache.org/jira/browse/FLINK-5473
>             Project: Flink
>          Issue Type: Bug
>          Components: DataStream API
>    Affects Versions: 1.2.0
>            Reporter: Robert Metzger
>            Assignee: Stefan Richter
>
> While trying out Flink 1.2, I found out that you can set a maxParallelism 
> higher than 1 on a non-parallel operator.
> I think we should have the same semantics as the setParallelism() method.
> Also, when setting a global maxParallelism in the execution environment, it 
> will be set as a default value for the non-parallel operator.
> When restoring a savepoint from 1.1, you have to set the maxParallelism to 
> the parallelism of the 1.1 job. Non-parallel operators will then also get the 
> maxPar set to this value, leading to an error on restore.
> So currently, users restoring from 1.1 to 1.2 have to manually set the 
> maxParallelism to 1 for all non-parallel operators.



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