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https://issues.apache.org/jira/browse/FLINK-1847?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14485228#comment-14485228
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Stephan Ewen commented on FLINK-1847:
-------------------------------------
I am actually seeing a common Scala pitfall here: Calling the parenthesis-less
method with parenthesis is a call to the method + apply(). That returns of
course something different.
The distinction between parenthesis-less methods and methods with empty
parenthesis is very tricky and needs to be done very carefully.
I doubt, I would always add parenthesis. Less error-prone...
> Change Scala collect() method to return a Seq
> ---------------------------------------------
>
> Key: FLINK-1847
> URL: https://issues.apache.org/jira/browse/FLINK-1847
> Project: Flink
> Issue Type: Bug
> Components: Scala API
> Affects Versions: 0.9
> Reporter: Stephan Ewen
>
> Right now, the method is very specific in returning {{mutable.Buffer}}.
> Changing it to {{Seq}} allows us to alter the underlying representation
> without breaking the API.
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