HyukjinKwon opened a new pull request #31858:
URL: https://github.com/apache/spark/pull/31858


   ### What changes were proposed in this pull request?
   
   This PR proposes to follow Univocity's input buffer.
   
   ### Why are the changes needed?
   
   - Firstly, it's best to trust their judgement on the default values. Also 
128 is too low.
   - Default values arguably have more test coverage in Univocity.
   - It will also fix https://github.com/uniVocity/univocity-parsers/issues/449
   - ^ is a regression compared to Spark 2.4
   
   ### Does this PR introduce _any_ user-facing change?
   
   No. In addition, It fixes a regression.
   
   ### How was this patch tested?
   
   Manually tested, and added a unit test.


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