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fastdfs学习之 选主流程
概述: (1)每个tracker服务在启动时会调用tracker_relationship_init函数启动一个线程relationship_thread_entrance。该线程会每隔几秒进行各个tracker的关系确认,若leader发生了变动,或宕机之类,会重新选出leader。 (2) 调用流程 main函数 |-int tracker_relationship_init()  ...
分类:其他好文   时间:2015-05-08 11:02:31    阅读次数:127
数据库 - 索引、基本表创建与删除
修改基本表ALTER TABLE [ ADD [ 完整性约束 ] ] [ DROP ] [ ALTER COLUMN ]; [例8]向Student表增加“入学时间”列,其数据类型为日期型。 ALTER TABLE Student ADD S_entrance DATE; 不论基本表中原来是否已有数据,新增加的列一...
分类:数据库   时间:2015-05-05 10:36:29    阅读次数:276
poj3083 Children of the Candy Cor
Description The cornfield maze is a popular Halloween treat. Visitors are shown the entrance and must wander through the maze facing zombies, chainsaw-wielding psychopaths, hippies, and other terro...
分类:其他好文   时间:2015-05-02 15:14:04    阅读次数:131
hdu 2795 Billboard 线段树单点更新
BillboardTime Limit: 1 SecMemory Limit: 256 MB题目连接http://acm.hdu.edu.cn/showproblem.php?pid=2795DescriptionAt the entrance to the university, there is...
分类:其他好文   时间:2015-04-21 12:37:57    阅读次数:139
清华学堂 列车调度(Train)
列车调度(Train)DescriptionFigure 1 shows the structure of a station for train dispatching.Figure 1In this station, A is the entrance for each train and B ...
分类:其他好文   时间:2015-04-19 21:21:39    阅读次数:254
HDU 2795——Billboard——————【单点更新、求最小位置】
BillboardTime Limit:8000MSMemory Limit:32768KB64bit IO Format:%I64d & %I64uSubmitStatusPracticeHDU 2795Appoint description:DescriptionAt the entrance ...
分类:其他好文   时间:2015-04-12 19:15:14    阅读次数:157
题目1002:Grading
题目描述: Grading hundreds of thousands of Graduate Entrance Exams is a hard work. It is even harder to design a process to make the results as fair as po...
分类:其他好文   时间:2015-04-11 19:10:21    阅读次数:130
NYOJ 179 LK's problem (排序模拟)
链接:click here~~ 题意: 描述 LK has a question.Coule you help her? It is the beginning of the day at a bank, and a crowd  of clients is already waiting for the entrance door to  open.  Once the ban...
分类:编程语言   时间:2015-02-24 13:52:25    阅读次数:210
HDU2795 Billboard 线段树 单点更新
Problem DescriptionAt the entrance to the university, there is a huge rectangular billboard of size h*w (h is its height and w is its width). The board is the place where all possible announcements are...
分类:其他好文   时间:2015-02-24 11:28:39    阅读次数:138
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