@Override
  public int hashCode() {
    return Objects.hash(key, size, expirationTimeInMs, isDeleted, isTtlUpdated, isUndeleted, crc, accountId,
        containerId, operationTimeMs, lifeVersion);
  }
True when the life version is not from frontend requests.
@return true when it's not from frontend requests.
ambry-api/src/main/java/com/github/ambry/store/MessageInfo.java