private static long parseTimestampTz(String dateStr, String tzStr) throws ParseException {
    TimeZone tz = TIMEZONE_CACHE.get(tzStr);
    return parseTimestampMillis(dateStr, DateTimeUtils.TIMESTAMP_FORMAT_STRING, tz);
  }
Parse date time string to timestamp based on the given time zone string and format. Returns
null if parsing failed.

@param dateStr the date time string
@param tzStr the time zone id string
amoro-format-mixed/amoro-mixed-flink/amoro-mixed-flink-common/src/main/java/org/apache/amoro/flink/util/DateTimeUtils.java