@Override
    public boolean equals(Object o) {
        if (this == o) {
            return true;
        }
        if (o == null || getClass() != o.getClass()) {
            return false;
        }
        if (!super.equals(o)) {
            return false;
        }
        JsonRowDataDeserializationSchema that = (JsonRowDataDeserializationSchema) o;
        return failOnMissingField == that.failOnMissingField
                && resultTypeInfo.equals(that.resultTypeInfo)
                && timestampFormat.equals(that.timestampFormat);
    }
Timestamp format specification which is used to parse timestamp.
inlong-sort/sort-formats/format-rowdata/format-rowdata-json/src/main/java/org/apache/inlong/sort/formats/json/JsonRowDataDeserializationSchema.java