About Myself I am a would-be Master of Engineering, on the last year of my student life, I'm ambitous to learn some pure and genuine technology on Python, Qt, Linux ,as well as soft skills about the coming career. Accompany with learning these popula…

文章发自http://www.cnblogs.com/hark0623/p/4204104.html ,转载请注明 我发现太多太多的坑要趟了… 向yarn提交sparkstreaming了,提交脚本如下,使用的是yarn-client spark-submit --driver-memory 1g --executor-memory 1g --executor-cores 1 --num-executors 3 --class com.yhx.sensor.sparkstreaming.Logi…

转自http://www.pixelstech.net/article/1327829407-Why-Every-Professional-Should-Consider-Blogging ften argue that professionals should share their knowledge online via blogging. The catch is that virtually anything worthwhile in life takes time and effo…

mysql启动报错Starting MySQL... ERROR! The server quit without updating PID file (/opt/mysql/data/mysql.pid) 查看mysql错误日志也没有写入. 最后发现是selinux打开,汗…… 参考 mysql启动时报错:Starting MySQL... ERROR! The server quit without updating PID file (/opt/mysql/data/mysql.pid)…

Meta Blogging 由来 偶然想到说如果哪一天cnblogs挂了,那之前记录的随笔怎么办?可不可以把它们给download下来本地保存一份.正好看到有个库叫requests, 干嘛不试试看呢. 开工 有了requests 和 beautifulsoup,代码其实很简单.唯一需要注意的是,不能太频繁地用requests.get来抓取网页,不然会报错.一般的网站都会有类似的自我保护机制吧,防止被爬虫给爬死了. import requests from BeautifulSoup import…

本文转自:http://www.cnblogs.com/TomGui/p/6438686.html An error occurred while starting the application. .NET Core X64 v4.1.1.0    |   Microsoft.AspNetCore.Hosting version 1.1.0-rtm-22752    |    Microsoft Windows 6.3.9600 报这个错,一脸懵逼,环境都按官方文档配置正确了,怎么办? 1.修…

用EntityFramework循环操作数据时,报了如下错误 An error occurred while starting a transaction on the provider connection. See the inner exception for details.System.InvalidOperationException: 已有打开的与此 Command 相关联的 DataReader,必须首先将它关闭. 查询了资料  https://www.cnblogs.com/d…

启动MySQL出现如下错误 May :: localhost mysqld: Starting MySQL... ERROR! The server quit without updating PID /data/localhost.localdomain.pid). May :: localhost systemd: mysqld.service: control process exited, code=exited status= May :: localhost systemd: Fai…

docker创建容器时报错如下: containerd: start container" error="oci runtime error: container_linux.go:247: starting container process caused "process_linux.go:245: running exec setns process for init caused \"exit status 17\""\n" 答…

1. 报错如下: SyntaxError: Non-UTF-8 code starting with '\xd3' in file D:\流畅学python\ex34.py on line 4, but no encoding declared; see http://python.org/dev/peps/pep-0263/ for details 2. 解决办法: 1> 首行添加 # -*- coding:utf-8 -*- 2> 更改编码格式 File-> Settings->…