Github user shivaram commented on the pull request: https://github.com/apache/spark/pull/7494#issuecomment-127663833 I see - so the problem here is on how to write a unit test that uses UTF-8 and works with `LC_ALL=C` ? One simple thing we might be able to do is to set the locale inside the unit test with `Sys.setlocale("LC_ALL", "en_US.UTF-8") ` -- Can you see if this works ? I think the Jenkins machines have a recent enough OS that it must support UTF-8
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