exception the occurred updating
Linux系统Apache添加监听端口后无法启动服务并报错：Job for httpd.service failed because the control process exited with error code. See "systemctl status httpd.service" and "journalctl -xeu httpd.service" for details.
导言：这是SE Linux安全机制导致的。 解决方法： 1.查看当前httpd端口 # semanage port -l|grep http 2.将对应端口加入SE Linux，以8068为例 # semanage port -a -t http_port_t -p tcp 8068 3.再次查看 ......
Doris forentend: Environment invalid because of previous exception: (JE 18.3.12)
错误日志 2023-07-18 19:45:58,493 INFO (main|1) [PaloFe.start():124] Palo FE starting... 2023-07-18 19:45:58,503 INFO (main|1) [FrontendOptions.analyzePrio ......
LOADING Redis is loading the dataset in memory
MISCONF Redis is configured to save RDB snapshots, but is currently not able to persist on disk. Commands that may modify the data set are disabled. P ......
[LeetCode] 2597. The Number of Beautiful Subsets
You are given an array nums of positive integers and a positive integer k. A subset of nums is beautiful if it does not contain two integers with an a ......
invalidate the cache in Spark by running 'REFRESH TABLE tableName' command in SQL or by recreating the Dataset/DataFrame involved
``` ... 1 more Caused by: java.io.FileNotFoundException: File does not exist: hdfs://ns1/user/hive/warehouse/dw.db/dw_uniswapv3_position_detail/pk_day ......
The file extension is not supported by Shapefile data provider.
后端返回：文件上传失败：The file extension is not supported by Shapefile data provider. 表明此时上传/处理的文件不符合标准。 ......
These are the list of external providers available to the application.
These are the list of external providers available to the application. https://github.com/davidfowl/TodoApi/blob/c209f6ae5c5f31f4808b0df85f358d4a572ea ......
解决 Https 站点请求 Http 接口服务后报 the content must be served over HTTPS 错误的问题
之前将自己所有的 `Http` 站点全部更新为 `Https` 站点，但是在请求后台接口服务的时候还是 `Http` 请求，导致部署之后，直接在控制台报 `This request has been blocked; the content must be served over HTTPS;` 的... ......
题解 CF840C On the Bench
这是一篇简洁易懂的良心题解，提供了多种做法。 对于两个数 $x,y$，定义 $x=n^2 \cdot tx,y=m^2 \cdot ty$。如果 $x\cdot y$ 为平方数，则说明 $tx=ty$。所以我们可以将每个数除去其平方因子，比较相邻两数是否相等即可。 ## F1： 定义 $f_{i,j ......
题解 The Human Equation
[The Human Equation](https://www.luogu.com.cn/problem/CF1775E) 思维题。 我们考虑每次 $a$ 数组加一减一对于其前缀和 $sum$ 的影响。 可以发现，假设相邻两次加一和减一的位置分别为 $l$ 和 $r$，那么 $sum$ 在 $[l ......
try except; 业务上的错误 raise
try: # num=int(input("请输入数字:")) # print(1/num) age= int(input("请输入年龄，不要小于18岁:")) if age < 18: # 非python的异常，业务逻辑上的异常，主动异常 raise raise NameError('异常，年纪小 ......
python包报错ImportError: urllib3 v2.0 only supports OpenSSL 1.1.1+, currently the 'ssl' module is compiled with 'OpenSSL 1.0.2k-fips 26 Jan 2017'
报错：ImportError: urllib3 v2.0 only supports OpenSSL 1.1.1+, currently the ‘ssl’ module is compiled with OpenSSL 1.1.0h 27 Mar 2018. 解决办法：Terminal窗口执行：p ......
You don't have write permissions for the /System/Library/Frameworks/Ruby.framework/Versions/x.x/usr/lib/ruby/gems/x.x.x directory.
Gem Error ERROR: While executing gem ... (Gem::FilePermissionError) You don't have write permissions for the /System/Library/Frameworks/Ruby.framework ......
泛微OA节点后附加操作-update数据
### 1. 礼品领用申请流程，到人力资源部备案节点，由人力资源部填写“实际使用数量”，在该节点后减少对应礼品的库存数量。 : Max retries exceeded with url: / (Caused by ......
解决报错Cannot connect to the Maven process. Try again later. If the problem persists, check the Maven
## 故障描述： 使用idea下载java某个源文件，idea报错：Cannot connect to the Maven process. Try again later. If the problem persists, check the Maven 
报错详细信息如下 “/”应用程序中的服务器错误。 分析器错误 说明: 在分析向此请求提供服务所需资源时出错。请检查下列特定分析错误详细信息并适当地修改源文件。分析器错误消息: 未能创建类型“WebApp.FileUploadHandler”。源错误: 行 1: <%@ WebHandler Lang ......
服务器/虚拟机 关机或重启之后报：Entering emergency mode. Exit the shell to continue.
## 具体现象  多次重启之后还是不行，提示让进入紧急模式或退出 ## 排查原因 根据提示输入journalctl ......
VSCode - Install/Update gotools
View --> Command Palette Input 'gotools' Click OK. ......
【图论】CF1508C Complete the MST
[Problem Link](https://codeforces.com/contest/1508/problem/C) 有一张 $n$ 个点的完全图，其中 $m$ 条边已经标有边权。你需要给剩下的边都标上权值，使得所有边权的异或和为 $0$，并且整张图的最小生成树边权和最小。 $n,m\le 1 ......
CF1175F The Number of Subpermutations 对自己的警告--zhengjun
太久没见过启发式合并了，然后没想出做法。 首先笛卡尔树建出来。 然后直接枚举跨过 $mid$ 的长度为 $a_{mid}$ 的区间，RMQ $O(1)$ 验证即可。 发现这样的区间个数不超过左右区间大小的较小值，时间复杂度：$O(n\log n)$。 ### 代码 ```cpp #include u ......
salesforce排错System.DmlException: Insert failed. First exception on row 0; first error: REQUIRED_FIELD_MISSING, Required fields are missing: [Contract_End_Date__c]: [Contract_End_Date__c]
System.DmlException: Insert failed. First exception on row 0; first error: REQUIRED_FIELD_MISSING, Required fields are missing: [Contract_End_Date__c] ......
excel 导出 The maximum length of cell contents (text) is 32767 characters
**导出excel功能，报错。错误日志提示：:The maximum length of cell contents (text) is 32767 characters** # 開啟ssh(1) 主機屏幕修改連項：Troubleshoot options\Disable ESXi Shell (Enable) & Disable SSH (Enable)Alt+ F1 進入命令行 ......
com.mysql.cj.exceptions.UnableToConnectException: Public Key Retrieval is not allowed报错处理
在做学成在线项目时，启动项目报错： com.mysql.cj.exceptions.UnableToConnectException: Public Key Retrieval is not allowed at sun.reflect.NativeConstructorAccessorImpl.n ......
【题解】CF gym 104337 G. Guess the Polynomial
statement：https://codeforces.com/gym/104337/problem/G 。 即求 $f(x)=\sum\limits_{i=0}^{p-2}a_ix^i$，其中只有不超过 $n$ 个 $a_i$ 非 $0$ 。 记： $$ \begin{aligned} A_{n ......
The 2019 ICPC China Shaanxi Provincial Programming Contest(2019陕西省赛)
## B. Grid with Arrows 并查集一下。 ```cpp #include "bits/stdc++.h" using namespace std; using i64 = long long; struct UnionFind { int n; vector f; UnionFin ......
The information of Seminars Language
‘The seminar is a common way ofteaching students on university courses in the UK and it is very likely that you will experience seminars on your cours ......