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https://issues.apache.org/jira/browse/FLINK-14720?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16973159#comment-16973159
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vinoyang commented on FLINK-14720:
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It seems we can only mark it as {{@VisibleForTesting}}, because this method has 
been used in 
{{ExecutionGraphToInputsLocationsRetrieverAdapterTest#testGetTaskManagerLocationWhenScheduled}},
 they are not in the same package.

> Mark ExecutionVertex#deployToSlot with @VisibleForTesting annotation
> --------------------------------------------------------------------
>
>                 Key: FLINK-14720
>                 URL: https://issues.apache.org/jira/browse/FLINK-14720
>             Project: Flink
>          Issue Type: Improvement
>            Reporter: vinoyang
>            Assignee: vinoyang
>            Priority: Minor
>              Labels: pull-request-available
>          Time Spent: 10m
>  Remaining Estimate: 0h
>
> From tracking the call chain of {{ExecutionVertex#deployToSlot}}, it seems 
> this method is only been called in the test code. IMO, we'd better bring down 
> {{ExecutionVertex#deployToSlot}} access modifier and mark it with 
> @VisibleForTesting annotation to reduce the risk of incorrect calls



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