connect

Hadoop常见异常及其解决方案

由 眉间皱痕 提交于 2019-12-24 11:25:36
1、Shell$ExitCodeException 现象：运行hadoop job时出现如下异常： 14/07/09 14:42:50 INFO mapreduce.Job: Task Id : attempt_1404886826875_0007_m_000000_1, Status : FAILED Exception from container-launch: org.apache.hadoop.util.Shell$ExitCodeException: org.apache.hadoop.util.Shell$ExitCodeException: at org.apache.hadoop.util.Shell.runCommand(Shell.java:505) at org.apache.hadoop.util.Shell.run(Shell.java:418) at org.apache.hadoop.util.Shell$ShellCommandExecutor.execute(Shell.java:650) at org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor.launchContainer(DefaultContainerExecutor.java:195) at org

Qt Mainwindow menu signals

由 孤街浪徒 提交于 2019-12-24 11:05:26
问题 I've "Core" object that handles QMainWindow. Core.h code class Core : public QObject { Q_OBJECT public: explicit Core(QObject *parent = 0); ~Core(); void appInit(); int getAuth(); public slots: void appExit(); private slots: void appMenuTriggered(QAction *action); private: void preInit(); MainWindow *mwnd; }; Core.cpp code Core::Core(QObject *parent) : QObject(parent) { qDebug() << "Core::Constructor called"; preInit(); } Core::~Core() { delete mwnd; qDebug() << "Core::Destructor called"; }

Cannot get `cookieSession` working with `maxAge`

由 蓝咒 提交于 2019-12-24 07:25:16
问题 ** SOLVED ** I've been struggling with this one for a bit. Lots of similar posts out there, but none of the proposed solutions are working for me. I'm using Express and Passport with cookie sessions. When I pass just the secret to cookieSession everything works fine: app.use(express.cookieParser('MySecret')); app.use(express.cookieSession('MySecret')); app.use(passport.initialize()); app.use(passport.session()); But the default cookie is session-based, and so it clears when you close your

node v0.5.0 pre Socket.IO crashes on connection (independent of transport)

由 我与影子孤独终老i 提交于 2019-12-24 05:57:51
问题 When I try to connect to socket.io it crashes with the following error message: Initializing client with transport "websocket" node: ../src/node.cc:1212: ssize_t node::DecodeWrite(char*, size_t, v8::Handle<v8::Value>, node::encoding): Assertion `b[1] == 0' failed. Aborted This happens when I try to start up the node chat example. (server.js file in the example folder). The installed socket.io version is the current version installed by using npm install socket.io. Does anyone know what the

Implementing history-api-fallback for Webpack Production environment

由 淺唱寂寞╮ 提交于 2019-12-24 01:43:09
问题 My stack is React/Redux as frontend together with React Router v4 and Firebase Hosting as backend. Like many others, I also faced the issue of meeting the 404 page not found when users refreshed at a page other than the root URL like https://example.com/about or manually key in the URL https://example.com/about. I researched many websites and HashBrowser seem to be a workaround for this problem but it is not a complete solution. It does not bring the user to the correct page but instead

Node.js - Domain per Express request, inside another domain

由 爷，独闯天下 提交于 2019-12-23 16:35:32
问题 Error handling in Node. Argh! I'm trying to layout a basic Node app like this... Cluster -> Worker -> Server Domain -> Express Request Domain So, if an error is thrown 18 layers deep into a call stack because someone misspelled their name on a login form, the entire server doesn't crash. Here's some basic code to simulate the worker part: var domain, server; domain = require('domain'); server = domain.create(); server.on('error', function(e) { console.log('total meltdown...', e.stack); });

How to prevent/catch connection error with MySQLi

由 ◇◆丶佛笑我妖孽 提交于 2019-12-23 11:55:00
问题 How do you prevent a connection error if, for example, the database name is invalid, for the given code below? $mysql = new mysqli('localhost', 'user', 'pass', 'wrongdatabase'); if($mysql->connect_errno) die($mysql->connect_error); The if statement will output the right error message, but there will still be a warning sent from the first line, which says Warning: mysqli::mysqli() [<a href='mysqli.mysqli'>mysqli.mysqli</a>]: (42000/1049): Unknown database 'wrongdatabase' in C:\wamp\www\example

Visual Studio Adding Data Connections - Given Key not Present in the Dictionary

由 时光总嘲笑我的痴心妄想 提交于 2019-12-23 08:18:32
问题 I've read through a couple of previous similar questions and none seem to provide a fix. so i ask again. I'm using Visual Studio and am trying to connect to a DB in Server Explorer. Regardless of what database i try to connect to it gives a "Given Key not Present in the Dictionary" error. i have tried with SQL CE and SQL Express 2008 databases and each give the same issue. I can connect quite easily with SQL Management Studio Express so i believe the Databases are the same. Thanks in Advance.

Node Express Connect - Session Management

由 不问归期 提交于 2019-12-23 07:54:59
问题 I've written a session store driver for ArangoDB for ConnectJS. It is working, although still very much in alpha, but I have a couple questions. First sessions that have an expires attribute of "false" only remain for the duration of the user-agent. I've noticed that session.destroy() is not called when the browser window is closed. This results in an "abandoned" session left in the store. How can I effectively clear these out? Is there a way to search for and destroy abandoned sessions on a

Client unable to bind to the given port and connect to the given server

由 梦想的初衷 提交于 2019-12-23 04:37:39
问题 I need my client to bind to a particular port and then connect to its server. The problem is if I bind to the given port successfully but unable to connect to the server. If I don't attempt to bind to the port I am able to connect to the server. The below is my program: int main() { int sock, bytes_recieved; char send_data[1024],recv_data[1024]; struct hostent *host; struct sockaddr_in server_addr,client_addr; host = gethostbyname("127.0.0.1"); if ((sock = socket(AF_INET, SOCK_STREAM, 0)) ==
订阅 connect