azagrebin commented on a change in pull request #13181:
URL: https://github.com/apache/flink/pull/13181#discussion_r483577436



##########
File path: 
flink-runtime/src/main/java/org/apache/flink/runtime/scheduler/SlotSharingExecutionSlotAllocator.java
##########
@@ -108,27 +122,30 @@
 
                SharedSlotProfileRetriever sharedSlotProfileRetriever = 
sharedSlotProfileRetrieverFactory
                        .createFromBulk(new HashSet<>(executionVertexIds));

Review comment:
       Indeed, this can result in suboptimal behaviour. I created an issue to 
investigate this: 
[FLINK-19142](https://issues.apache.org/jira/browse/FLINK-19142).




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