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You need the comma because you are addressing the person. "Did you feel the earthquake last night?" is a complete sentence. Adding "Eri" is a kind of one-word clause. You need the comma to separate...
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#4: Attribution notice removed
Source: https://writers.stackexchange.com/a/9025 License name: CC BY-SA 3.0 License URL: https://creativecommons.org/licenses/by-sa/3.0/
#3: Attribution notice added
Source: https://writers.stackexchange.com/a/9025 License name: CC BY-SA 3.0 License URL: https://creativecommons.org/licenses/by-sa/3.0/