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spark程序与参数的关系
What is spark.python.worker.memory? Spark on YARN resource manager: Relation between YARN Containers and Spark Executors? When running Spark on YARN, ...
分类:其他好文   时间:2019-10-24 00:41:17    阅读次数:108
thinkphp的普通查询与表达式查询
一、普通查询方式 a、字符串:$arr=$m->where("sex=0 and username='gege'")->find();//字符串需要加引号 b、数组 注意:如果使用or关系,需要添加数组值 链接:https://pan.baidu.com/s/1v5gm7n0L7TGyejCmQrM ...
分类:Web程序   时间:2019-10-24 00:05:27    阅读次数:124
spering getBean()
IOC:前面都是对bean定义的处理,postProcess已经实例化了。 解析bean的时候,把需要依赖注入的字段和方法,在postProcessMergedBeanDefinition方法中加到AutowiredAnnotationBeanPostProcessor的变量中,然后在Autowir... ...
分类:其他好文   时间:2019-10-23 19:48:13    阅读次数:72
LED Decorative Light Supplier - LED Environmental Decorative Lighting Application
Creating ambient lighting in the home can bridge the gap between the internal world and the outside world. Why not use LED decorative lighting to pain ...
分类:移动开发   时间:2019-10-22 14:55:28    阅读次数:138
Why React Is Favored by Front-End Specialists
In this section, we will discuss some of the features that make React a superior choice for front-end developers. Have a look: Source: http://blog.emb ...
分类:其他好文   时间:2019-10-21 16:13:02    阅读次数:92
数据库基本知识——运算符
算术运算符+比较运算符+逻辑运算符/布尔运算符+位运算符 1.算术运算符:加+ 减- 乘* 除取商/ 除取余%、mod(A,B) 2.比较运算符: =、>=、<=、>、<、is null、is not null、 <>或!=(不等于)、<=>(null安全的等于)、between(存在于指定范围)、 ...
分类:数据库   时间:2019-10-21 16:05:44    阅读次数:143
PTA (Advanced Level)1005.Spell It Right
Given a non negative integer N , your task is to compute the sum of all the digits of N , and output every digit of the sum in English. Input Specific ...
分类:其他好文   时间:2019-10-20 10:57:44    阅读次数:75
CodeForces-1244C-The Football Season-思维
The football season has just ended in Berland. According to the rules of Berland football, each match is played between two teams. The result of each ...
分类:其他好文   时间:2019-10-19 09:48:04    阅读次数:68
ansible-playbook通过github拉取部署Lnmp环境
1. 配置服务器初始化 1.1) 关闭防火墙和selinux 1.2) 安装epel源 1.3) 安装ansible 2. 配置ansible配置文件修改 2.1) 配置ansible配置文件 1 [root@test-1 ~]# vim /etc/ansible/ansible.cfg 2 [ro ...
分类:其他好文   时间:2019-10-18 19:27:10    阅读次数:111
PostgreSQL练习2
列转行CREATE TABLE sdb.t_col_row(id int, c1 varchar(10), c2 varchar(10), c3 varchar(10)) INSERT INTO sdb.t_col_row( id, c1, c2, c3)VALUES (1, 'v11', 'v21 ...
分类:数据库   时间:2019-10-18 19:06:00    阅读次数:113
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