Github user asfgit closed the pull request at:
https://github.com/apache/spark/pull/14771
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GitHub user jaceklaskowski opened a pull request:
https://github.com/apache/spark/pull/14771
[SPARK-17199] Use CatalystConf.resolver for case-sensitivity comparison
## What changes were proposed in this pull request?
Use `CatalystConf.resolver` consistently for
