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https://www.ibm.com/developerworks/library/bd-yarn-intro/ 阅读全文
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https://curl.haxx.se/docs/manpage.html curl is a tool to transfer data from or to a server, using one of the supported protocols (DICT, FILE, FTP, FTP 阅读全文
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975.45 MB (1,022,836,736) 阅读全文
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【同一时刻】 2个或多个事件 并发 concurrence 在同一时间间隔内不同时刻发生 并行 同一时刻发生 【计算程序 I/O程序】 未引入进程的系统 在属于同一个应用程序的计算程序和I/O程序之间只能是顺序执行,不能同时执行;但为计算程序和I/O程序分别建立一个进程(process)后,这两个进 阅读全文
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https://www.liaoxuefeng.com/wiki/ 阅读全文
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cerery http://docs.celeryproject.org/en/latest/userguide/index.html 阅读全文
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http://www.sohu.com/a/204244301_99961855 阅读全文
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l=[1,2,3]def f(l): l[1]=123print(l)f(l)print(l)s="abc"def f1(s): s="x"print(s)f1(s)print(s) 可变对象 浅复制,函数修改了原值 不可变对象,不影响 对于不可变类型(数值型、字符串、元组),因变量不能修改,所以运 阅读全文
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https://blog.golang.org/go-concurrency-patterns-timing-out-and https://blog.golang.org/concurrency-timeouts Go Concurrency Patterns: Timing out, movin 阅读全文
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https://blog.golang.org/pipelines 阅读全文
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https://docs.oracle.com/javase/tutorial/essential/concurrency/pools.html Most of the executor implementations in java.util.concurrent use thread pools 阅读全文
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New Elastic Load Balancing Feature: Sticky Sessions | AWS News Blog https://amazonaws-china.com/cn/blogs/aws/new-elastic-load-balancing-feature-sticky 阅读全文
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http://hbase.apache.org/acid-semantics.html Apache HBase (TM) is not an ACID compliant database. However, it does guarantee certain specific propertie 阅读全文
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http://web.mit.edu/kerberos/ What is Kerberos? Kerberos is a network authentication protocol. It is designed to provide strong authentication for clie 阅读全文
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class Student():... name = 'Student'...s = Student() # 创建实例sprint(s.name) # 打印name属性,因为实例并没有name属性,所以会继续查找class的name属性Studentprint(Student.name) # 打印类 阅读全文
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http://www.sogou.com/labs/resource/list_yuliao.php 阅读全文
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总结: 1、无论一个类实例化多少对象,它的静态变量只有一份拷贝; 静态域属于类,而非由类构造的实例化的对象,所有类的实例对象共享静态域。 class Employee { private static int nextId = 1; private int id; ... } 静态变量 静态常量 p 阅读全文
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LocalDate.plusDate String.toUpperCase GregorianCalendar.add 阅读全文
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【数据技巧1】手把手教你用容器实现下钻 https://mp.weixin.qq.com/s/l0iIUi6Jl9UuXxgQoXXM-A 数据分析工作中,尤其在做数据汇报时,难免需要做多层级的精准报告,仪表板里的数据下钻就显得格外重要。以往,我们习惯通过筛选去下钻、或通过视图去筛选,你有没有想到其 阅读全文
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识别:访问者来源、会话、访问者 HTTP 安全套接字层SSL :包含访问者的登录活动和加密密钥的交换 动态网页:在返回给访问者的每个网页中隐藏一个会话ID的字段来维护访问者状态 阅读全文
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[root@bigdata-server-02 /]# ps --help all Usage: ps [options] Basic options: -A, -e all processes -a all with tty, except session leaders a all with t 阅读全文
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https://en.wikipedia.org/wiki/SHA-3 阅读全文
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【熵增】 由无序到有序 http://spark.apache.org/docs/latest/rdd-programming-guide.html#shuffle-operations Shuffle operations Certain operations within Spark trigg 阅读全文
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每个job被划分为多个stage。划分stage的一个主要依据是当前计算因子的输入是否是确定的,如果是则将其分在同一个stage,从而避免多个stage之间的消息传递开销。 http://spark.apache.org/docs/latest/rdd-programming-guide.html 阅读全文
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data warehouse 阅读全文
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Apache HBase™ is the Hadoop database, a distributed, scalable, big data store. Use Apache HBase™ when you need random, realtime read/write access to y 阅读全文
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https://en.wikipedia.org/wiki/DevOps DevOps (a clipped compound of "development" and "operations") is a software engineering practice that aims at uni 阅读全文
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5 Ways to Make Your Hive Queries Run Faster Technique #1: Use Tez Hive can use the Apache Tez execution engine instead of the venerable Map-reduce eng 阅读全文
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multiple r squared adjusted r squared http://web.maths.unsw.edu.au/~adelle/Garvan/Assays/GoodnessOfFit.html Goodness-of-Fit Statistics Sum of Squares 阅读全文
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https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2895822/ In Brief: The P Value: What Is It and What Does It Tell You? Frederick Dorey, PhD Author informa 阅读全文
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延迟 阅读全文
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tuple 每个处理路径 阅读全文
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https://flume.apache.org/FlumeDeveloperGuide.html#client-sdk flume使用之httpSource - CSDN博客 https://blog.csdn.net/liuxiao723846/article/details/78131732 阅读全文
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https://github.com/cloudera/flume/blob/master/flume-docs/src/docs/UserGuide/Introduction 阅读全文
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http://www.chromium.org/spdy/spdy-whitepaper https://en.wikipedia.org/wiki/SPDY BGP DHCP DNS FTP HTTP HTTPS IMAP LDAP MGCP MQTT NNTP NTP POP ONC/RPC R 阅读全文
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https://blog.chromium.org/2013/06/experimenting-with-quic.html user datagram protocol transport layer security 阅读全文
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翻译 搜索 复制 阅读全文
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https://git-scm.com/book/en/v2/Git-Branching-Rebasing 阅读全文
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https://tecadmin.net/ways-to-send-email-from-linux-command-line/ We all know the importance of emails these days for information transfer. There are m 阅读全文
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https://baike.baidu.com/item//638320?fromModule=lemma_inlink 假设检验(hypothesis testing),又称统计假设检验,是用来判断样本与样本、样本与总体的差异是由抽样误差引起还是本质差别造成的统计推断方法。显著性检验是假设检验中最 阅读全文