[GitHub] [spark] dbtsai commented on issue #24865: [SPARK-27100][SQL] dag-scheduler-event-loop" java.lang.StackOverflowError

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dbtsai commented on issue #24865: [SPARK-27100][SQL] dag-scheduler-event-loop" java.lang.StackOverflowError
URL: https://github.com/apache/spark/pull/24865#issuecomment-502783225
 
 
   A question I would like to ask is when we should use `Array` instead of `Seq`. We extensively use `Seq` in our codebase because `Seq` is more generic interface. However, in this case, we don't have a control on what is being passed in, and the implementation can be a linked list resulting poor performance in many cases.
   
   In stead of using `Seq` everywhere, should we use `Seq` in function input to keep it generic, but use `Array` in function return?

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