public long getLong(String name, long defaultVal) {
    return getLongInRange(name, defaultVal, Long.MIN_VALUE, Long.MAX_VALUE);
  }
Read an long from the properties instance
@param name The property name
@param defaultVal The default value to use if the property is not found
@return the long value
ambry-api/src/main/java/com/github/ambry/config/VerifiableProperties.java