[GitHub] [spark] HyukjinKwon opened a new pull request #27756: [SPARK-25202][SQL][FOLLOW-UP] Keep the old parameter name 'pattern' at split in Scala API

[GitBox <gi...@apache.org>]

HyukjinKwon opened a new pull request #27756: [SPARK-25202][SQL][FOLLOW-UP] Keep the old parameter name 'pattern' at split in Scala API
URL: https://github.com/apache/spark/pull/27756
 
 
   ### What changes were proposed in this pull request?
   
   To address the concern pointed out in https://github.com/apache/spark/pull/22227. This will make `split` source-compatible by removing minimal cosmetic changes.
   
   ### Why are the changes needed?
   
   For source compatibility.
   
   ### Does this PR introduce any user-facing change?
   
   No (it will prevent potential user-facing change from the original PR)
   
   ### How was this patch tested?
   
   Unittest was changed (in order for us to detect that source compatibility easily).
   

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