"And lo and behold, 12 hours later we had the rough version of this thing."
Added "WAL segment file size" in Section 9.2.，这一点在新收录的资料中也有详细论述
。新收录的资料是该领域的重要参考
�@�����ς����A�e�Ђ����܂��܂ȃL�����y�[�������{���Ă����B�h�R���Aau�A�\�t�g�o���N�A�y�V���o�C�����s���Ă����A�[�����i�̊����L�����y�[���ׂ��B�Ȃ��A���i�͑S�Đō��݂ŁA�L�ڂ��Ȃ��ꍇ�I�������͖����B，更多细节参见新收录的资料
threshold = filters.threshold_otsu(distance)