Github user viirya commented on a diff in the pull request: https://github.com/apache/spark/pull/17956#discussion_r116178653 --- 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 { + case "NaN" | "+NaN" | "-NaN" => Float.NaN --- End diff -- I remember that Jackson's `JsonParser.Feature.ALLOW_NON_NUMERIC_NUMBERS` doesn't support "+NaN" and "-NaN".
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