Github user cloud-fan commented on the pull request:
https://github.com/apache/spark/pull/12204#issuecomment-217617628
I'm not sure if this is safe to do so, one problem is: hive is not
case-preserving. For example, we write out partitioned data to file system and
write the metadata to hive. When we read metadata back, all partition column
names are lower cases and may not match the existing partition directory if the
file system is case sensitive.
cc @yhuai @liancheng
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