Github user MaxGekk commented on the issue: https://github.com/apache/spark/pull/22657 > I didn't see that one, and I object to it. I believe we don't need to test all timezones in the case of JSON datasource. Actually we just check how `FastDateFormat` of `commons-lang3` is able to parse/generate JSON by using different timezones. From my point of view, It should be enough to have one test case which checks that we properly pass a timezone to `FastDateFormat`. Don't think we have to test apache `commons-lang3` fully. @HyukjinKwon What do you think of it?
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