[RM HA3] Zookeeper在RM HA的应用 RM HA(ResourceManager  HighAvailability)中使用Zookeeper的地方在ZKRMStateStore和ZKFailoverController,ZKRMStateStore继承于抽象类RMStateStore,从名字上可以看出RMStateStore是存储RM状态的存储器,ZKRMStateStore是其中的一种实现——使用Zookeeper存储RM状态.抽象类ZKFailoverController…
在 [Chae, Dongho; Lee, Jihoon. On the geometric regularity conditions for the 3D Navier-Stokes equations. Nonlinear Anal. 151 (2017), 265--273] 中, 作者证明了如果$$u\times \f{\om}{|\om|}\cdot \f{\vLm^\be u}{|\vLm^\be u|}\in L^p(0,T;L^q(\bbR^3)),\quad \f{2}{p}…
Number Sequence Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 187893    Accepted Submission(s): 46820 Problem Description A number sequence is defined as follows: f(1) = 1, f(2) = 1, f(n) = (A…
前言 廓清认知 1.函数\(y=f(x)\)的奇偶性 ①\(y=f(x)\)为奇函数,则满足\(f(-x)+f(x)=0\),即关于点\((0,0)\)对称: ②\(y=f(x)\)为偶函数,则满足\(f(-x)-f(x)=0\),即关于直线\(x=0\)对称: ③奇偶性的推广即为对称性, 比如函数满足\(f(x)+f(2-x)=4\),则函数\(y=f(x)\)关于点\((1,2)\)对称: 函数满足\(f(x)-f(2-x)=0\),则函数\(y=f(x)\)关于直线\(x=1\)对称: 2…
rm -f catalina.2018-10-22.*    与*号间无空格 rm -f catalina.2018-10-22. *    :多了空格:…
# find ./ -exec rm {} \; # find ./ | xargs rm -rf 两者都可以把find命令查找到的结果删除,其区别简单的说是前者是把find发现的结果一次性传给exec选项,这样当文件数量较多的时候,就可能会出现“参数太多”之类的错误,相比较而言,后者就可以避免这个错误,因为xargs命令会分批次的处理结果.这样看来,“find ./| xargs rm -rf”是更通用的方法,推荐使用! rm不接受标准输入,所以不能用find / -name "*.txt&q…
1.c#根据绝对路径获取 带后缀文件名.后缀名.文件名.   1 string str =" F:\test\Default.aspx"; 2 string filename = System.IO.Path.GetFileName(str);//文件名 “Default.aspx” 3 string extension = System.IO.Path.GetExtension(str);//扩展名 “.aspx” 4 string fileNameWithoutExtension…
原文链接:https://swlaschin.gitbooks.io/fsharpforfunandprofit/content/posts/fvsc-sum-of-squares.html Comparing F# with C#: A simple sumF# PK C#:简单的求和 To see what some real F# code looks like, let's start with a simple problem: "sum the squares from 1 to N…
原文地址:http://fsharpforfunandprofit.com/why-use-fsharp/ Why use F#?Why you should consider using F# for your next project 为什么要用F#?为什么你应该考虑在下一个项目使用F# Although F# is great for specialist areas such as scientific or data analysis, it is also an excellent…
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