Github user gatorsmile commented on the issue: https://github.com/apache/spark/pull/17956 Before this PR, the option `allowNonNumericNumbers` affects the results of the following four cases: ```Json {"a": NaN} {"a": Infinity} {"a": +Infinity} {"a": -Infinity} ``` We should also enable this flag for the following cases too. ```Json {"a": "+INF"} {"a": "INF"} {"a": "-INF"} {"a": "NaN"} {"a": "+NaN"} {"a": "-NaN"} {"a": "Infinity"} {"a": "+Infinity"} {"a": "-Infinity"} ``` In addition, we almost introduced a very serious regression defect, because we do not have the test case to cover the following scenarios: ```Json {"a": "4.0"} ``` Thus, we also should include the above test case.
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