public String toHumanReadableString() {
    if (humanReadableStr == null) {
      humanReadableStr = formatToHumanReadableString();
    }

    return humanReadableStr;
  }
Gets the memory size in Tebibytes (= 1024 Gibibytes).
amoro-common/src/main/java/org/apache/amoro/utils/MemorySize.java