Github user viirya commented on a diff in the pull request: https://github.com/apache/spark/pull/17956#discussion_r116177634 --- Diff: sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/json/JacksonParser.scala --- @@ -126,16 +125,13 @@ class JacksonParser( case VALUE_STRING => // Special case handling for NaN and Infinity. - val value = parser.getText - val lowerCaseValue = value.toLowerCase(Locale.ROOT) - if (lowerCaseValue.equals("nan") || - lowerCaseValue.equals("infinity") || - lowerCaseValue.equals("-infinity") || - lowerCaseValue.equals("inf") || - lowerCaseValue.equals("-inf")) { - value.toFloat - } else { - throw new RuntimeException(s"Cannot parse $value as FloatType.") + parser.getText match { --- End diff -- It seems to me that we don't really support case insensitive before. Although we check the lower case of input string, but we actually call `toFloat` on the original string. And `"nan".toFloat` will get `java.lang.NumberFormatException: For input string: "nan"`.
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