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  • No recent books on MPI: is it dying?

    - by Jono
    I've never used Message Passing Interface (MPI), but I've heard its name thrown about, most recently with Windows HPC Server. I had a quick look on amazon to see if there were any books on it, but they're all dated around 7 or more years ago. Is MPI still a valid technology choice for new applications, or has it been largely superceded by other distributed programming alternatives (e.g. DataSynapse GridServer)? As it's not really an implementation, but rather a standard, what is the likelihood (assuming it's not dead) that learning it will result in better design of distributed programming systems? Is there something else I should be looking at instead?

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  • How can i connect two or more machines via tcp cable to form a network grid?

    - by Gath
    How can i connect two or more machines to form a network grid and how can i distribute work load to the two machines? What operating systems do i need to run on the machines, and what application should i use to manage the load balancing? NB: I read somewhere that google uses cheap machines to perform this fete, how do they connect two network cards( 'Teaming' ) and distribute load across the machines? Good practical examples would serve me good, with actual code samples. Pointers to some good site i might read this stuff will be highly appreciated.

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  • Condor job using DAG with some jobs needing to run the same host

    - by gurney alex
    I have a computation task which is split in several individual program executions, with dependencies. I'm using Condor 7 as task scheduler (with the Vanilla Universe, due do constraints on the programs beyond my reach, so no checkpointing is involved), so DAG looks like a natural solution. However some of the programs need to run on the same host. I could not find a reference on how to do this in the Condor manuals. Example DAG file: JOB A A.condor JOB B B.condor JOB C C.condor JOB D D.condor PARENT A CHILD B C PARENT B C CHILD D I need to express that B and D need to be run on the same computer node, without breaking the parallel execution of B and C. Thanks for your help.

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  • c++ programming for clusters and HPC

    - by Abruzzo Forte e Gentile
    HI All I need to write a scientific application in C++ doing a lot of computations and using a lot of memory. I have part of the job but due to high requirements in terms of resources I was thinking to start moving to OpenMPI. Before doing that I have a simple curiosity: If I understood the principle of OpenMPI is the developer that has the task of splitting the jobs over different nodes calling SEND and RECEIVE based on node available at that time. Do you know if it does exist some library or OS or whatever that has this capability letting my code reamain as it is now? Basically something that connects all computers and let share as one their memory and CPU? I am a bit confused because of the high material available on the topic. Should I look at cloud computing? or Distributed Shared Memory? Can you help me or address me a bit? Thanks

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  • Load Balancer Timeout

    - by Anilkumar
    "This website is temporarily unavailable. Please check back later. Unfortunately there were no suitable nodes available to serve this request." When I request a stored procedure from my program (SP is taking 2 minutes to execute) the above error is getting. I believe this is because of Load balancer Time out. How we can increment the load balancer time out.

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  • How to balance load in a Apache + Mongrel application

    - by Will
    I was wondering if someone can explain how can a rails application be balanced. Two questions: Does it even help having separate rails applications reading from the same database in the same dedicated server? I understand Apache can balance load installing some extra modules? am i right? how can we accomplish this? (please provide explanation for dummies)

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  • Why is the Java VM so popular?

    - by sdudo
    There are more and more programming languages (Scala, Clojure,...) coming out that are made for the Java VM and are therefore compatible with the Java Byte-Code. I'm beginning to ask myself: Why the Java VM? What makes it so powerful or popular that there are new programming languages, which seem gaining popularity too, created for it? Why don't they write a new VM for a new language?

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  • Problems with OpenVPN setup

    - by user70617
    Hi, I'm trying to set up a VPN server using OpenVPN and I'm getting some errors while trying to connect the client to the server. I'm getting the following error: Sun Feb 13 14:54:16 2011 OpenVPN 2.1.4 i686-pc-linux-gnu [SSL] [LZO2] [EPOLL] built on Feb 5 2011 Sun Feb 13 14:54:16 2011 IMPORTANT: OpenVPN's default port number is now 1194, based on an official port number assignment by IANA. OpenVPN 2.0-beta16 and earlier used 5000 as the default port. Sun Feb 13 14:54:16 2011 NOTE: OpenVPN 2.1 requires '--script-security 2' or higher to call user-defined scripts or executables Sun Feb 13 14:54:16 2011 ******* WARNING *******: all encryption and authentication features disabled -- all data will be tunnelled as cleartext Sun Feb 13 14:54:16 2011 RESOLVE: NOTE: localhost resolves to 2 addresses Sun Feb 13 14:54:16 2011 Note: Cannot ioctl TUNSETIFF tap0: Device or resource busy (errno=16) Sun Feb 13 14:54:16 2011 Note: Attempting fallback to kernel 2.2 TUN/TAP interface Sun Feb 13 14:54:16 2011 Cannot open TUN/TAP dev /dev/tap0: No such file or directory (errno=2) Sun Feb 13 14:54:16 2011 Exiting I have bridge-utils installed and tap0 shows up in ifconfig. Can anybody give me a hand? Thanks in advance.

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  • Strange Jmeter connection refuse on Tomcat

    - by Tommy
    I tried difference setting in Jmeter and Tomcat. If the Threads number in JMeter is 1~200, Then tomcat is okay. If It is 300, Then after serving few requests, tomcat starts to output errors. Here is the error show in JMeter java.net.ConnectException: Connection refused: connect at java.net.PlainSocketImpl.socketConnect(Native Method) at java.net.PlainSocketImpl.doConnect(Unknown Source) at java.net.PlainSocketImpl.connectToAddress(Unknown Source) at java.net.PlainSocketImpl.connect(Unknown Source) at java.net.SocksSocketImpl.connect(Unknown Source) at java.net.Socket.connect(Unknown Source) at java.net.Socket.connect(Unknown Source) at sun.net.NetworkClient.doConnect(Unknown Source) at sun.net.www.http.HttpClient.openServer(Unknown Source) at sun.net.www.http.HttpClient.openServer(Unknown Source) at sun.net.www.http.HttpClient.<init>(Unknown Source) at sun.net.www.http.HttpClient.New(Unknown Source) at sun.net.www.http.HttpClient.New(Unknown Source) at sun.net.www.protocol.http.HttpURLConnection.getNewHttpClient(Unknown Source) at sun.net.www.protocol.http.HttpURLConnection.plainConnect(Unknown Source) at sun.net.www.protocol.http.HttpURLConnection.connect(Unknown Source) at org.apache.jmeter.protocol.http.sampler.HTTPJavaImpl.sample(HTTPJavaImpl.java:483) at org.apache.jmeter.protocol.http.sampler.HTTPSamplerProxy.sample(HTTPSamplerProxy.java:62) at org.apache.jmeter.protocol.http.sampler.HTTPSamplerBase.sample(HTTPSamplerBase.java:1018) at org.apache.jmeter.protocol.http.sampler.HTTPSamplerBase.sample(HTTPSamplerBase.java:1004) at org.apache.jmeter.threads.JMeterThread.process_sampler(JMeterThread.java:411) at org.apache.jmeter.threads.JMeterThread.run(JMeterThread.java:297) at java.lang.Thread.run(Unknown Source) My tomcat server.xml in eclipse <!--The connectors can use a shared executor, you can define one or more named thread pools--> <Executor name="tomcatThreadPool" namePrefix="catalina-exec-" maxThreads="2000" minSpareThreads="250" acceptCount="2000"/> <Connector executor="tomcatThreadPool" URIEncoding="UTF-8" connectionTimeout="20000" port="8080" protocol="HTTP/1.1" redirectPort="8443" /> Any idea why this is happening ? How do i check the server.xml is correctly used? It is a JSF2 application if it helps. Thanks in advance.

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  • Vagrant up doesn't load chef configs and doesn't keep an error log

    - by la_f0ka
    I'm trying to set up a vagrant box and I'm running with all sort of troubles. Right now I'm getting a strange error message where it states there's a stack trace file with more info, but that file is no where to be found. This is the error: stdin: is not a tty [Sun, 16 Sep 2012 18:31:47 +0000] INFO: *** Chef 0.10.0 *** [Sun, 16 Sep 2012 18:31:48 +0000] INFO: Setting the run_list to ["recipe[apt]", "recipe[openssl]", "recipe[apache2]", "recipe[mysql]", "recipe[mysql::server]", "recipe[php]", "recipe[php::module_apc]", "recipe[php::module_curl]", "recipe[php::module_mysql]", "recipe[apache2::mod_php5]", "recipe[apache2::mod_rewrite]"] from JSON [Sun, 16 Sep 2012 18:31:48 +0000] INFO: Run List is [recipe[apt], recipe[openssl], recipe[apache2], recipe[mysql], recipe[mysql::server], recipe[php], recipe[php::module_apc], recipe[php::module_curl], recipe[php::module_mysql], recipe[apache2::mod_php5], recipe[apache2::mod_rewrite]] [Sun, 16 Sep 2012 18:31:48 +0000] INFO: Run List expands to [apt, openssl, apache2, mysql, mysql::server, php, php::module_apc, php::module_curl, php::module_mysql, apache2::mod_php5, apache2::mod_rewrite] [Sun, 16 Sep 2012 18:31:48 +0000] INFO: Starting Chef Run for natty.talifun.com [Sun, 16 Sep 2012 18:31:48 +0000] ERROR: Running exception handlers [Sun, 16 Sep 2012 18:31:48 +0000] ERROR: Exception handlers complete [Sun, 16 Sep 2012 18:31:48 +0000] FATAL: Stacktrace dumped to /tmp/vagrant-chef-1/chef-stacktrace.out [Sun, 16 Sep 2012 18:31:48 +0000] FATAL: NameError: wrong constant name Chef-symfony2Console Chef never successfully completed! Any errors should be visible in the output above. Please fix your recipes so that they properly complete. And this is what my vagrantfile looks like: Vagrant::Config.run do |config| config.vm.box = "ubuntu-1104-server-i386" config.vm.network :hostonly, "33.33.33.33" config.vm.forward_port 80, 8000 config.vm.share_folder "symfony.tests", "/var/www/symfony.tests", "data", :nfs => true config.vm.provision :chef_solo do |chef| chef.cookbooks_path = ["../my-recipes/cookbooks", "site-cookbooks"] chef.add_recipe "apt" chef.add_recipe "openssl" chef.add_recipe "apache2" chef.add_recipe "mysql" chef.add_recipe "mysql::server" chef.add_recipe "php" chef.add_recipe "php::module_apc" chef.add_recipe "php::module_curl" chef.add_recipe "php::module_mysql" chef.add_recipe "apache2::mod_php5" chef.add_recipe "apache2::mod_rewrite" chef.add_recipe "Symfony" chef.json = { :mysql => { :server_root_password => 'root', :bind_address => '127.0.0.1' } } end end

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  • JVM system time runs faster than HP UNIX OS system time

    - by winston
    Hello I have the following output from a simple debug jsp: Weblogic Startup Since: Friday, October 19, 2012, 08:36:12 AM Database Current Time: Wednesday, December 12, 2012, 11:43:44 AM Weblogic JVM Current Time: Wednesday, December 12, 2012, 11:45:38 AM Line 1 was a recorded variable during WebLogic webapp startup. Line 2 was output from database query select sysdate from dual; Line 3 was output from java code new Date() I have checked from shell date command that line 2 output conforms with OS time. The output of line 3 was mysterious. I don't know how it comes from Java VM. On another machine with same setting, the same jsp output like this: Weblogic Startup Since: Tuesday, December 11, 2012, 02:29:06 PM Database Current Time: Wednesday, December 12, 2012, 11:51:48 AM Weblogic JVM Current Time: Wednesday, December 12, 2012, 11:51:50 AM Another machine: Weblogic Startup Since: Monday, December 10, 2012, 05:00:34 PM Database Current Time: Wednesday, December 12, 2012, 11:52:03 AM Weblogic JVM Current Time: Wednesday, December 12, 2012, 11:52:07 AM Findings: the pattern shows that the longer Weblogic startup, the larger the discrepancy of OS time with JVM time. Anybody could help on HP JVM? On HP UNIX, NTP was done daily. Anyway here comes the server versions: HP-UX machinex B.11.31 U ia64 2426956366 unlimited-user license java version "1.6.0.04" Java(TM) SE Runtime Environment (build 1.6.0.04-jinteg_28_apr_2009_04_46-b00) Java HotSpot(TM) Server VM (build 11.3-b02-jre1.6.0.04-rc2, mixed mode) WebLogic Server Version: 10.3.2.0 Java properties java.runtime.name=Java(TM) SE Runtime Environment java.runtime.version=1.6.0.04-jinteg_28_apr_2009_04_46-b00 java.vendor=Hewlett-Packard Co. java.vendor.url=http\://www.hp.com/go/Java java.version=1.6.0.04 java.vm.name=Java HotSpot(TM) 64-Bit Server VM java.vm.info=mixed mode java.vm.specification.vendor=Sun Microsystems Inc. java.vm.vendor="Hewlett-Packard Company" sun.arch.data.model=64 sun.cpu.endian=big sun.cpu.isalist=ia64r0 sun.io.unicode.encoding=UnicodeBig sun.java.launcher=SUN_STANDARD sun.jnu.encoding=8859_1 sun.management.compiler=HotSpot 64-Bit Server Compiler sun.os.patch.level=unknown os.name=HP-UX os.version=B.11.31

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  • Server error 500: Undefinable problem with my Zend Framework based site

    - by sanders
    Hello everyone, Lately I had to reinstall my development site on my ubuntu machine since my system crashed after an os update. 4 days later my site is still not running as it should. Whenever i do an action which has in it an action on a database, it stops working. For example when Registring a new user, i get the following error: [Sun Jul 25 20:07:20 2010] [error] [client 127.0.0.1] PHP Notice: Trying to get property of non-object in /var/www/nrka2/application/bootstrap/Bootstrap.php on line 169, referer: http://nrka2/user/register [Sun Jul 25 20:07:20 2010] [error] [client 127.0.0.1] PHP Stack trace:, referer: http://nrka2/user/register [Sun Jul 25 20:07:20 2010] [error] [client 127.0.0.1] PHP 1. {main}() /var/www/nrka2/public/index.php:0, referer: http://nrka2/user/register [Sun Jul 25 20:07:20 2010] [error] [client 127.0.0.1] PHP 2. require() /var/www/nrka2/public/index.php:2, referer: http://nrka2/user/register [Sun Jul 25 20:07:20 2010] [error] [client 127.0.0.1] PHP 3. Zend_Application->bootstrap() /var/www/nrka2/application/application.php:23, referer: http://nrka2/user/register [Sun Jul 25 20:07:20 2010] [error] [client 127.0.0.1] PHP 4. Zend_Application_Bootstrap_BootstrapAbstract->bootstrap() /var/www/Zend/ZendFramework-1.10.6/library/Zend/Application.php:355, referer: http://nrka2/user/register [Sun Jul 25 20:07:20 2010] [error] [client 127.0.0.1] PHP 5. Zend_Application_Bootstrap_BootstrapAbstract->_bootstrap() /var/www/Zend/ZendFramework-1.10.6/library/Zend/Application/Bootstrap/BootstrapAbstract.php:583, referer: http://nrka2/user/register [Sun Jul 25 20:07:20 2010] [error] [client 127.0.0.1] PHP 6. Zend_Application_Bootstrap_BootstrapAbstract->_executeResource() /var/www/Zend/ZendFramework-1.10.6/library/Zend/Application/Bootstrap/BootstrapAbstract.php:619, referer: http://nrka2/user/register [Sun Jul 25 20:07:20 2010] [error] [client 127.0.0.1] PHP 7. Bootstrap->_initViewSettings() /var/www/Zend/ZendFramework-1.10.6/library/Zend/Application/Bootstrap/BootstrapAbstract.php:666, referer: http://nrka2/user/register [Sun Jul 25 20:07:22 2010] [error] [client 127.0.0.1] PHP Notice: Trying to get property of non-object in /var/www/nrka2/application/bootstrap/Bootstrap.php on line 169, referer: http://nrka2/css/main.css [Sun Jul 25 20:07:22 2010] [error] [client 127.0.0.1] PHP Stack trace:, referer: http://nrka2/css/main.css [Sun Jul 25 20:07:22 2010] [error] [client 127.0.0.1] PHP 1. {main}() /var/www/nrka2/public/index.php:0, referer: http://nrka2/css/main.css [Sun Jul 25 20:07:22 2010] [error] [client 127.0.0.1] PHP 2. require() /var/www/nrka2/public/index.php:2, referer: http://nrka2/css/main.css [Sun Jul 25 20:07:22 2010] [error] [client 127.0.0.1] PHP 3. Zend_Application->bootstrap() /var/www/nrka2/application/application.php:23, referer: http://nrka2/css/main.css [Sun Jul 25 20:07:22 2010] [error] [client 127.0.0.1] PHP 4. Zend_Application_Bootstrap_BootstrapAbstract->bootstrap() /var/www/Zend/ZendFramework-1.10.6/library/Zend/Application.php:355, referer: http://nrka2/css/main.css [Sun Jul 25 20:07:22 2010] [error] [client 127.0.0.1] PHP 5. Zend_Application_Bootstrap_BootstrapAbstract->_bootstrap() /var/www/Zend/ZendFramework-1.10.6/library/Zend/Application/Bootstrap/BootstrapAbstract.php:583, referer: http://nrka2/css/main.css [Sun Jul 25 20:07:22 2010] [error] [client 127.0.0.1] PHP 6. Zend_Application_Bootstrap_BootstrapAbstract->_executeResource() /var/www/Zend/ZendFramework-1.10.6/library/Zend/Application/Bootstrap/BootstrapAbstract.php:619, referer: http://nrka2/css/main.css [Sun Jul 25 20:07:22 2010] [error] [client 127.0.0.1] PHP 7. Bootstrap->_initViewSettings() /var/www/Zend/ZendFramework-1.10.6/library/Zend/Application/Bootstrap/BootstrapAbstract.php:666, referer: http://nrka2/css/main.css My Bootstrap class looks like this: <?php class Bootstrap extends Zend_Application_Bootstrap_Bootstrap{ /** * * @var unknown_type */ public $frontcontroller; /** * * @var unknown_type */ protected $_logger; /** * * @var unknown_type */ protected $_acl; /** * * @var unknown_type */ protected $_auth; /** * Setup the logging */ protected function _initLogging() { $this->bootstrap('frontController'); $logger = new Zend_Log(); $writer = 'production' == $this->getEnvironment() ? new Zend_Log_Writer_Stream(APPLICATION_PATH . '/../data/logs/app.log') : new Zend_Log_Writer_Firebug(); $logger->addWriter($writer); if ('production' == $this->getEnvironment()) { $filter = new Zend_Log_Filter_Priority(Zend_Log::CRIT); $logger->addFilter($filter); } $this->_logger = $logger; Zend_Registry::set('log', $logger); } protected function _initDefaultModuleAutoloader(){ $this->_logger->info('Bootstrap '. __METHOD__); $this->_resourceLoader = new Zend_Application_Module_Autoloader(array( 'namespace' => 'EventManager', 'basePath' => APPLICATION_PATH . '/modules/eventManager', )); $this->_resourceLoader->addResourceTypes(array( 'modelResource' => array( 'path' => 'models/resources', 'namespace' => 'Resource', ), 'service' => array( 'path' => 'services', 'namespace' => 'Service' ), )); } // @todo develop this function protected function _initDbProfiler(){ $this->_logger->info('Bootstrap ' . __METHOD__); if ('production' !== $this->getEnvironment()) { $this->bootstrap('db'); $profiler = new Zend_Db_Profiler_Firebug('All DB Queries'); $profiler->setEnabled(true); $this->getPluginResource('db')->getDbAdapter()->setProfiler($profiler); } } /** * Add Controller Action Helpers */ protected function _initActionHelpers() { $this->_logger->info('Bootstrap ' . __METHOD__); Zend_Controller_Action_HelperBroker::addHelper(new SF_Controller_Helper_Acl()); Zend_Controller_Action_HelperBroker::addHelper(new SF_Controller_Helper_RedirectCommon()); Zend_Controller_Action_HelperBroker::addHelper(new SF_Controller_Helper_Service()); } /** * * @return unknown_type */ protected function _initRoutes(){ $this->_logger->info('Initialize Routes '. __METHOD__); $this->bootstrap('frontController'); $router = $this->frontController->getRouter(); $route = new Zend_Controller_Router_route( 'register', array( 'controller' => 'user', 'action' => 'register' ) ); $router->addRoute('register',$route); $route = new Zend_Controller_Router_route( 'login', array( 'controller' => 'user', 'action' => 'login' ) ); $router->addRoute('login',$route); $route = new Zend_Controller_Router_route( 'logout', array( 'controller' => 'user', 'action' => 'logout' ) ); $router->addRoute('logout',$route); } /** * * @return void */ protected function _initLocale(){ $this->_logger->info('Bootstrap '.__METHOD__); $locale = new Zend_Locale('nl_NL'); Zend_Registry::set('Zend_Locale', $locale); } protected function _initAcl(){ $this->_acl = new EventManager_Service_Acl(); } /** * * @return void */ protected function _initViewSettings(){ $this->_logger->info('Bootstrap '.__METHOD__); $this->bootstrap('view'); $this->bootstrap('Acl'); $this->_view = $this->getResource('view'); //set encoding and doctype $this->_view->setEncoding('UTF-8'); $this->_view->doctype('XHTML1_STRICT'); $this->_view->headMeta()->appendHttpEquiv('Content-Type', 'text/html; charset=UTF-8'); $this->_view->headMeta()->appendHttpEquiv('Content-Language', 'en-US'); //@todo op een later moment moeten hier nog de stylesheets worden toegevoegd $this->_view->headLink()->appendStylesheet('/css/main.css'); //$this->_view->headTitle('Event Manager'); /* Set the head style. $this->_view->headTitle->headStyle(); */ $this->_view->headTitle()->setSeparator(' - '); $this->_auth = Zend_Auth::getInstance(); $navigation = new Zend_Config_Xml(APPLICATION_PATH.'/configs/navigation.xml','nav'); $navContainer = new Zend_Navigation($navigation); $this->_view->navigation($navContainer)->setAcl($this->_acl)->setRole($this->_auth->getStorage()->read()->usr_role); //THIS IS LINE 169!!!!!!!!! } /** * Add graceful error handling to the dispatch, this will handle * errors during Front Controller dispatch. */ public function run() { $errorHandling = $this->getOption('errorhandling'); try { parent::run(); } catch(Exception $e) { if (true == (bool) $errorHandling['graceful']) { $this->__handleErrors($e, $errorHandling['email']); } else { throw $e; } } } /** * Handle errors gracefully, this will work as long as the views, * and the Zend classes are available * * @param Exception $e * @param string $email */ protected function __handleErrors(Exception $e, $email) { header('HTTP/1.1 500 Internal Server Error'); $view = new Zend_View(); $view->addScriptPath(dirname(__FILE__) . '/../views/scripts'); echo $view->render('fatalError.phtml'); if ('' != $email) { $mail = new Zend_Mail(); $mail->setSubject('Fatal error in application Storefront'); $mail->addTo($email); $mail->setBodyText( $e->getFile() . "\n" . $e->getMessage() . "\n" . $e->getTraceAsString() . "\n" ); @$mail->send(); } } } I have tried to debug my code, but everyting goes well until I do somethign with the db. But I don't know what goes wrong with the db. I don't get any clear error messages. Can someone help me? Some more possible interesting data: [bootstrap] resources.db.adapter = "PDO_MYSQL" resources.db.isdefaulttableadapter = true resources.db.params.dbname = "ladosa" resources.db.params.username = "root" resources.db.params.password = "root" resources.db.params.hostname = "localhost" resources.db.params.charset = "UTF8" resources.db.params.profiler.enabled = true resources.db.params.profiler.class = Zend_Db_Profiler_Firebug Autoloadernamespaces[] = "Zend_" Autoloadernamespaces[] = "SF_" phpsettings.display_errors = 0 phpsettings.error_reporting = 8191 phpSettings.date.timezone = "Europe/Amsterdam" bootstrap.path = APPLICATION_PATH"/bootstrap/Bootstrap.php" pluginPaths.resource_ = APPLICATION_PATH"/resources" resources.frontcontroller.moduledirectory = APPLICATION_PATH"/modules" resources.frontcontroller.defaultmodule = "eventManager" resources.frontcontroller.params.prefixDefaultModule = true resources.frontcontroller.exceptions = false resources.view[] = "" resources.layout.layoutPath = APPLICATION_PATH "/layouts/scripts" resources.view.encoding = "UTF-8" resources.view.title = Rode kruis Vrijwilligers applicatie ;resources.view.helperPath.Default_View_Helper = APPLICATION_PATH "/modules/eventManager/views/helpers" resources.layout.layout = "main" [production:bootstrap] [development:bootstrap] ;resources.frontController.throwExceptions = 1 ;phpSettings.display_startup_errors=1 ;phpSettings.display_errors = 1 ;resources.frontcontroller.throwerrors = [test:production] btw. I CAN login to my database command line with the given username and password. Update: today i decided to investigate on my http request and i came to an error 500. My apache logs don't give any related information, I think. I posted the logs above. Any idea's?

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  • Server error 500: Undefinable problem with my Zend Framework based site

    - by sanders
    Lately I had to reinstall my development site on my ubuntu machine since my system crashed after an os update. 4 days later my site is still not running as it should. Whenever i do an action which has in it an action on a database, it stops working. For example when Registring a new user, i get the following error: [Sun Jul 25 20:07:20 2010] [error] [client 127.0.0.1] PHP Notice: Trying to get property of non-object in /var/www/nrka2/application/bootstrap/Bootstrap.php on line 169, referer: http://nrka2/user/register [Sun Jul 25 20:07:20 2010] [error] [client 127.0.0.1] PHP Stack trace:, referer: http://nrka2/user/register [Sun Jul 25 20:07:20 2010] [error] [client 127.0.0.1] PHP 1. {main}() /var/www/nrka2/public/index.php:0, referer: http://nrka2/user/register [Sun Jul 25 20:07:20 2010] [error] [client 127.0.0.1] PHP 2. require() /var/www/nrka2/public/index.php:2, referer: http://nrka2/user/register [Sun Jul 25 20:07:20 2010] [error] [client 127.0.0.1] PHP 3. Zend_Application->bootstrap() /var/www/nrka2/application/application.php:23, referer: http://nrka2/user/register [Sun Jul 25 20:07:20 2010] [error] [client 127.0.0.1] PHP 4. Zend_Application_Bootstrap_BootstrapAbstract->bootstrap() /var/www/Zend/ZendFramework-1.10.6/library/Zend/Application.php:355, referer: http://nrka2/user/register [Sun Jul 25 20:07:20 2010] [error] [client 127.0.0.1] PHP 5. Zend_Application_Bootstrap_BootstrapAbstract->_bootstrap() /var/www/Zend/ZendFramework-1.10.6/library/Zend/Application/Bootstrap/BootstrapAbstract.php:583, referer: http://nrka2/user/register [Sun Jul 25 20:07:20 2010] [error] [client 127.0.0.1] PHP 6. Zend_Application_Bootstrap_BootstrapAbstract->_executeResource() /var/www/Zend/ZendFramework-1.10.6/library/Zend/Application/Bootstrap/BootstrapAbstract.php:619, referer: http://nrka2/user/register [Sun Jul 25 20:07:20 2010] [error] [client 127.0.0.1] PHP 7. Bootstrap->_initViewSettings() /var/www/Zend/ZendFramework-1.10.6/library/Zend/Application/Bootstrap/BootstrapAbstract.php:666, referer: http://nrka2/user/register [Sun Jul 25 20:07:22 2010] [error] [client 127.0.0.1] PHP Notice: Trying to get property of non-object in /var/www/nrka2/application/bootstrap/Bootstrap.php on line 169, referer: http://nrka2/css/main.css [Sun Jul 25 20:07:22 2010] [error] [client 127.0.0.1] PHP Stack trace:, referer: http://nrka2/css/main.css [Sun Jul 25 20:07:22 2010] [error] [client 127.0.0.1] PHP 1. {main}() /var/www/nrka2/public/index.php:0, referer: http://nrka2/css/main.css [Sun Jul 25 20:07:22 2010] [error] [client 127.0.0.1] PHP 2. require() /var/www/nrka2/public/index.php:2, referer: http://nrka2/css/main.css [Sun Jul 25 20:07:22 2010] [error] [client 127.0.0.1] PHP 3. Zend_Application->bootstrap() /var/www/nrka2/application/application.php:23, referer: http://nrka2/css/main.css [Sun Jul 25 20:07:22 2010] [error] [client 127.0.0.1] PHP 4. Zend_Application_Bootstrap_BootstrapAbstract->bootstrap() /var/www/Zend/ZendFramework-1.10.6/library/Zend/Application.php:355, referer: http://nrka2/css/main.css [Sun Jul 25 20:07:22 2010] [error] [client 127.0.0.1] PHP 5. Zend_Application_Bootstrap_BootstrapAbstract->_bootstrap() /var/www/Zend/ZendFramework-1.10.6/library/Zend/Application/Bootstrap/BootstrapAbstract.php:583, referer: http://nrka2/css/main.css [Sun Jul 25 20:07:22 2010] [error] [client 127.0.0.1] PHP 6. Zend_Application_Bootstrap_BootstrapAbstract->_executeResource() /var/www/Zend/ZendFramework-1.10.6/library/Zend/Application/Bootstrap/BootstrapAbstract.php:619, referer: http://nrka2/css/main.css [Sun Jul 25 20:07:22 2010] [error] [client 127.0.0.1] PHP 7. Bootstrap->_initViewSettings() /var/www/Zend/ZendFramework-1.10.6/library/Zend/Application/Bootstrap/BootstrapAbstract.php:666, referer: http://nrka2/css/main.css My Bootstrap class looks like this: <?php class Bootstrap extends Zend_Application_Bootstrap_Bootstrap{ /** * * @var unknown_type */ public $frontcontroller; /** * * @var unknown_type */ protected $_logger; /** * * @var unknown_type */ protected $_acl; /** * * @var unknown_type */ protected $_auth; /** * Setup the logging */ protected function _initLogging() { $this->bootstrap('frontController'); $logger = new Zend_Log(); $writer = 'production' == $this->getEnvironment() ? new Zend_Log_Writer_Stream(APPLICATION_PATH . '/../data/logs/app.log') : new Zend_Log_Writer_Firebug(); $logger->addWriter($writer); if ('production' == $this->getEnvironment()) { $filter = new Zend_Log_Filter_Priority(Zend_Log::CRIT); $logger->addFilter($filter); } $this->_logger = $logger; Zend_Registry::set('log', $logger); } protected function _initDefaultModuleAutoloader(){ $this->_logger->info('Bootstrap '. __METHOD__); $this->_resourceLoader = new Zend_Application_Module_Autoloader(array( 'namespace' => 'EventManager', 'basePath' => APPLICATION_PATH . '/modules/eventManager', )); $this->_resourceLoader->addResourceTypes(array( 'modelResource' => array( 'path' => 'models/resources', 'namespace' => 'Resource', ), 'service' => array( 'path' => 'services', 'namespace' => 'Service' ), )); } // @todo develop this function protected function _initDbProfiler(){ $this->_logger->info('Bootstrap ' . __METHOD__); if ('production' !== $this->getEnvironment()) { $this->bootstrap('db'); $profiler = new Zend_Db_Profiler_Firebug('All DB Queries'); $profiler->setEnabled(true); $this->getPluginResource('db')->getDbAdapter()->setProfiler($profiler); } } /** * Add Controller Action Helpers */ protected function _initActionHelpers() { $this->_logger->info('Bootstrap ' . __METHOD__); Zend_Controller_Action_HelperBroker::addHelper(new SF_Controller_Helper_Acl()); Zend_Controller_Action_HelperBroker::addHelper(new SF_Controller_Helper_RedirectCommon()); Zend_Controller_Action_HelperBroker::addHelper(new SF_Controller_Helper_Service()); } /** * * @return unknown_type */ protected function _initRoutes(){ $this->_logger->info('Initialize Routes '. __METHOD__); $this->bootstrap('frontController'); $router = $this->frontController->getRouter(); $route = new Zend_Controller_Router_route( 'register', array( 'controller' => 'user', 'action' => 'register' ) ); $router->addRoute('register',$route); $route = new Zend_Controller_Router_route( 'login', array( 'controller' => 'user', 'action' => 'login' ) ); $router->addRoute('login',$route); $route = new Zend_Controller_Router_route( 'logout', array( 'controller' => 'user', 'action' => 'logout' ) ); $router->addRoute('logout',$route); } /** * * @return void */ protected function _initLocale(){ $this->_logger->info('Bootstrap '.__METHOD__); $locale = new Zend_Locale('nl_NL'); Zend_Registry::set('Zend_Locale', $locale); } protected function _initAcl(){ $this->_acl = new EventManager_Service_Acl(); } /** * * @return void */ protected function _initViewSettings(){ $this->_logger->info('Bootstrap '.__METHOD__); $this->bootstrap('view'); $this->bootstrap('Acl'); $this->_view = $this->getResource('view'); //set encoding and doctype $this->_view->setEncoding('UTF-8'); $this->_view->doctype('XHTML1_STRICT'); $this->_view->headMeta()->appendHttpEquiv('Content-Type', 'text/html; charset=UTF-8'); $this->_view->headMeta()->appendHttpEquiv('Content-Language', 'en-US'); //@todo op een later moment moeten hier nog de stylesheets worden toegevoegd $this->_view->headLink()->appendStylesheet('/css/main.css'); //$this->_view->headTitle('Event Manager'); /* Set the head style. $this->_view->headTitle->headStyle(); */ $this->_view->headTitle()->setSeparator(' - '); $this->_auth = Zend_Auth::getInstance(); $navigation = new Zend_Config_Xml(APPLICATION_PATH.'/configs/navigation.xml','nav'); $navContainer = new Zend_Navigation($navigation); $this->_view->navigation($navContainer)->setAcl($this->_acl)->setRole($this->_auth->getStorage()->read()->usr_role); //THIS IS LINE 169!!!!!!!!! } /** * Add graceful error handling to the dispatch, this will handle * errors during Front Controller dispatch. */ public function run() { $errorHandling = $this->getOption('errorhandling'); try { parent::run(); } catch(Exception $e) { if (true == (bool) $errorHandling['graceful']) { $this->__handleErrors($e, $errorHandling['email']); } else { throw $e; } } } /** * Handle errors gracefully, this will work as long as the views, * and the Zend classes are available * * @param Exception $e * @param string $email */ protected function __handleErrors(Exception $e, $email) { header('HTTP/1.1 500 Internal Server Error'); $view = new Zend_View(); $view->addScriptPath(dirname(__FILE__) . '/../views/scripts'); echo $view->render('fatalError.phtml'); if ('' != $email) { $mail = new Zend_Mail(); $mail->setSubject('Fatal error in application Storefront'); $mail->addTo($email); $mail->setBodyText( $e->getFile() . "\n" . $e->getMessage() . "\n" . $e->getTraceAsString() . "\n" ); @$mail->send(); } } } I have tried to debug my code, but everyting goes well until I do somethign with the db. But I don't know what goes wrong with the db. I don't get any clear error messages. Can someone help me? Some more possible interesting data: [bootstrap] resources.db.adapter = "PDO_MYSQL" resources.db.isdefaulttableadapter = true resources.db.params.dbname = "ladosa" resources.db.params.username = "root" resources.db.params.password = "root" resources.db.params.hostname = "localhost" resources.db.params.charset = "UTF8" resources.db.params.profiler.enabled = true resources.db.params.profiler.class = Zend_Db_Profiler_Firebug Autoloadernamespaces[] = "Zend_" Autoloadernamespaces[] = "SF_" phpsettings.display_errors = 0 phpsettings.error_reporting = 8191 phpSettings.date.timezone = "Europe/Amsterdam" bootstrap.path = APPLICATION_PATH"/bootstrap/Bootstrap.php" pluginPaths.resource_ = APPLICATION_PATH"/resources" resources.frontcontroller.moduledirectory = APPLICATION_PATH"/modules" resources.frontcontroller.defaultmodule = "eventManager" resources.frontcontroller.params.prefixDefaultModule = true resources.frontcontroller.exceptions = false resources.view[] = "" resources.layout.layoutPath = APPLICATION_PATH "/layouts/scripts" resources.view.encoding = "UTF-8" resources.view.title = Rode kruis Vrijwilligers applicatie ;resources.view.helperPath.Default_View_Helper = APPLICATION_PATH "/modules/eventManager/views/helpers" resources.layout.layout = "main" [production:bootstrap] [development:bootstrap] ;resources.frontController.throwExceptions = 1 ;phpSettings.display_startup_errors=1 ;phpSettings.display_errors = 1 ;resources.frontcontroller.throwerrors = [test:production] btw. I CAN login to my database command line with the given username and password. Update: today i decided to investigate on my http request and i came to an error 500. My apache logs don't give any related information, I think. I posted the logs above. Any idea's?

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  • USB drive errors after airport scan

    - by bobobobo
    Well, I just got a new PNY usb drive and it passed through an airport scanner yesterday. For some reason, I wrote to it and then tried to read from it today, and it gave me a corrupted error! chkdsk reports errors like: Bad links in lost chain at cluster 1179 corrected. Lost chain cross-linked at cluster 1200. Orphan truncated. Lost chain cross-linked at cluster 1228. Orphan truncated. Lost chain cross-linked at cluster 1236. Orphan truncated. Lost chain cross-linked at cluster 1237. Orphan truncated. Lost chain cross-linked at cluster 1244. Orphan truncated. Lost chain cross-linked at cluster 1250. Orphan truncated. Lost chain cross-linked at cluster 1266. Orphan truncated. Lost chain cross-linked at cluster 1278. Orphan truncated. etc. What is this from? Could it possibly be from the airport scanner, or is it likely a defective USB chip? How can I check the chip to see if I should just return/throw it away or continue to use it?

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  • How can I cluster short messages [Tweets] based on topic ? [Topic Based Clustering]

    - by Jagira
    Hello, I am planning an application which will make clusters of short messages/tweets based on topics. The number of topics will be limited like Sports [ NBA, NFL, Cricket, Soccer ], Entertainment [ movies, music ] and so on... I can think of two approaches to this Ask for users to tag questions like Stackoverflow does. Users can select tags from a predefined list of tags. Then on server side I will cluster them on based of tags. Pros:- Simple design. Less complexity in code. Cons:- Choices for users will be restricted. Clusters will not be dynamic. If a new event occurs, the predefined tags will miss it. Take the message, delete the stopwords [ predefined in a dictionary ] and apply some clustering algorithm to make a cluster and depending on its popularity, display the cluster. The cluster will be maintained according to its sustained popularity. New messages will be skimmed and assigned to corresponding clusters. Pros:- Dynamic clustering based on the popularity of the event/accident. Cons:- Increased complexity. More server resources required. I would like to know whether there are any other approaches to this problem. Or are there any ways of improving the above mentioned methods? Also suggest some good clustering algorithms.I think "K-Nearest Clustering" algorithm is apt for this situation.

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  • Clustering for Mere Mortals (Pt2)

    - by Geoff N. Hiten
    Planning. I could stop there and let that be the entirety post #2 in this series.  Planning is the single most important element in building a cluster and the Laptop Demo Cluster is no exception.  One of the more awkward parts of actually creating a cluster is coordinating information between Windows Clustering and SQL Clustering.  The dialog boxes show up hours apart, but still have to have matching and consistent information. Excel seems to be a good tool for tracking these settings.  My workbook has four pages: Systems, Storage, Network, and Service Accounts.  The systems page looks like this:   Name Role Software Location East Physical Cluster Node 1 Windows Server 2008 R2 Enterprise Laptop VM West Physical Cluster Node 2 Windows Server 2008 R2 Enterprise Laptop VM North Physical Cluster Node 3 (Future Reserved) Windows Server 2008 R2 Enterprise Laptop VM MicroCluster Cluster Management Interface N/A Laptop VM SQL01 High-Performance High-Security Instance SQL Server 2008 Enterprise Edition x64 SP1 Laptop VM SQL02 High-Performance Standard-Security Instance SQL Server 2008 Enterprise Edition x64 SP1 Laptop VM SQL03 Standard-Performance High-Security Instance SQL Server 2008 Enterprise Edition x64 SP1 Laptop VM Note that everything that has a computer name is listed here, whether physical or virtual. Storage looks like this: Storage Name Instance Purpose Volume Path Size (GB) LUN ID Speed Quorum MicroCluster Cluster Quorum Quorum Q: 2     SQL01Anchor SQL01 Instance Anchor SQL01Anchor L: 2     SQL02Anchor SQL02 Instance Anchor SQL02Anchor M: 2     SQL01Data1 SQL01 SQL Data SQL01Data1 L:\MountPoints\SQL01Data1 2     SQL02Data1 SQL02 SQL Data SQL02Data1 M:\MountPoints\SQL02Data1       Starting at the left is the name used in the storage array.  It is important to rename resources at each level, whether it is Storage, LUN, Volume, or disk folder.  Otherwise, troubleshooting things gets complex and difficult.  You want to be able to glance at a resource at any level and see where it comes from and what it is connected to. Networking is the same way:   System Network VLAN  IP Subnet Mask Gateway DNS1 DNS2 East Public Cluster1 10.97.230.x(DHCP) 255.255.255.0 10.97.230.1 10.97.230.1 10.97.230.1 East Heartbeat Cluster2   255.255.255.0       West Public Cluster1 10.97.230.x(DHCP) 255.255.255.0 10.97.230.1 10.97.230.1 10.97.230.1 West Heartbeat Cluster2   255.255.255.0       North Public Cluster1 10.97.230.x(DHCP) 255.255.255.0 10.97.230.1 10.97.230.1 10.97.230.1 North Heartbeat Cluster2   255.255.255.0       SQL01 Public Cluster1 10.97.230.x(DHCP) 255.255.255.0       SQL02 Public Cluster1 10.97.230.x(DHCP) 255.255.255.0       One hallmark of a poorly planned and implemented cluster is a bunch of "Local Network Connection #n" entries in the network settings page.  That lets me know that somebody didn't care about the long-term supportabaility of the cluster.  This can be critically important with Hyper-V Clusters and their high NIC counts.  Final page:   Instance Service Name Account Password Domain OU SQL01 SQL Server SVCSQL01 Baseline22 MicroAD Service Accounts SQL01 SQL Agent SVCSQL01 Baseline22 MicroAD Service Accounts SQL02 SQL Server SVC_SQL02 Baseline22 MicroAD Service Accounts SQL02 SQL Agent SVC_SQL02 Baseline22 MicroAD Service Accounts SQL03 (Future) SQL Server SVC_SQL03 Baseline22 MicroAD Service Accounts SQL03 (Future) SQL Agent SVC_SQL03 Baseline22 MicroAD Service Accounts             Installation Account           administrator            Yes.  I write down the account information.  I secure the file via NTFS, but I don't want to fumble around looking for passwords when it comes time to rebuild a node. Always fill out the workbook COMPLETELY before installing anything.  The whole point is to have everything you need at your fingertips before you begin.  The install experience is so much better and more productive with this information in place.

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  • Java web start - Unable to load resource

    - by CD
    Hi all, I've got a jar that loads great with java web starter when I browse through the IP address of the server. Once I try the server name instead I get the following exception: com.sun.deploy.net.FailedDownloadException: Unable to load resource: at com.sun.deploy.net.DownloadEngine.actionDownload(Unknown Source) at com.sun.deploy.net.DownloadEngine.getCacheEntry(Unknown Source) at com.sun.deploy.net.DownloadEngine.getCacheEntry(Unknown Source) at com.sun.deploy.net.DownloadEngine.getResourceCacheEntry(Unknown Source) at com.sun.deploy.net.DownloadEngine.getResourceCacheEntry(Unknown Source) at com.sun.deploy.net.DownloadEngine.getResource(Unknown Source) at com.sun.javaws.LaunchDownload$DownloadTask.call(Unknown Source) at java.util.concurrent.FutureTask$Sync.innerRun(Unknown Source) at java.util.concurrent.FutureTask.run(Unknown Source) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown Source) at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) at java.lang.Thread.run(Unknown Source) Any idea what should I look for?

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  • Using Xlib via JNA to move a window

    - by rob
    I'm using JNA to manipulate application windows on Linux by sending Xlib messages but can't seem to move a window. My original implementation executed wmctrl on the shell to move the windows and that successfully moved the windows. Unfortunately, there's a noticeable amount of overhead associated with calling shell programs from Java, so now I'm trying to make direct API calls using JNA. I'm using the X11 example available from the JNA website and can successfully do a few tricks, such as enumerating the window IDs and reading window properties, so I know JNA+Xlib is at least partially working. First I tried moving the windows directly using XMoveWindow() but the window manager was apparently blocking those calls. I ran across a thread that suggested I needed to send a client message using XSendMessage(), so I've done that below, but apparently XSendMessage() is failing because the window doesn't move and I get a return value of 0. I'm guessing I omitted something obvious, but can't quite figure it out. Any suggestions? Note that, for the purposes of this example, the main method has a window ID hard-coded. This is the window ID of the window I'm trying to move (obtained using wmctrl -l on the console). import com.sun.jna.NativeLong; import com.sun.jna.Pointer; import com.sun.jna.examples.unix.X11; import com.sun.jna.examples.unix.X11.Atom; import com.sun.jna.examples.unix.X11.AtomByReference; import com.sun.jna.examples.unix.X11.Display; import com.sun.jna.examples.unix.X11.Window; import com.sun.jna.examples.unix.X11.WindowByReference; import com.sun.jna.examples.unix.X11.XEvent; import com.sun.jna.examples.unix.X11.XTextProperty; import com.sun.jna.examples.unix.X11.XWindowAttributes; import com.sun.jna.ptr.IntByReference; import com.sun.jna.ptr.NativeLongByReference; import com.sun.jna.ptr.PointerByReference; private static final int FALSE = 0; /** C-style boolean "false" */ private static final int TRUE = 1; /** C-style boolean "true" */ public static void main(String[] args) { setWindowPos(new Window(0x01300007), 100, 100, 600, 400); // update the Window constructor with the appropriate ID given by wmctrl -l } public static boolean setWindowPos(Window window, int x, int y, int w, int h) { final X11 x11 = X11.INSTANCE; Display display = x11.XOpenDisplay(null); NativeLong mask = new NativeLong(X11.SubstructureRedirectMask | X11.SubstructureNotifyMask | X11.ResizeRedirectMask); XEvent event = new XEvent(); String msg = "_NET_MOVERESIZE_WINDOW"; //$NON-NLS-1$ long grflags = 0l; // use the default gravity of the window if (x != -1) grflags |= (1 << 8); if (y != -1) grflags |= (1 << 9); if (w != -1) grflags |= (1 << 10); if (h != -1) grflags |= (1 << 11); event.xclient.type = X11.ClientMessage; event.xclient.serial = new NativeLong(0l); event.xclient.send_event = TRUE; event.xclient.message_type = x11.XInternAtom(display, msg, false); event.xclient.window = window; event.xclient.format = 32; event.xclient.data.l[0] = new NativeLong(grflags); // gravity flags event.xclient.data.l[1] = new NativeLong(x); event.xclient.data.l[2] = new NativeLong(y); event.xclient.data.l[3] = new NativeLong(w); event.xclient.data.l[4] = new NativeLong(h); int status = x11.XSendEvent(display, x11.XDefaultRootWindow(display), FALSE, mask, event); x11.XFlush(display); // need to XFlush if we're not reading X events if (status == 0) { // 0 indicates XSendEvent failed logger.error("setWindowPos: XSendEvent failed (" + msg + ")"); //$NON-NLS-1$ return false; } return true; }

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  • JBoss EJB Bean not bound

    - by portoalet
    Hi, I have the following error Exception in thread "main" javax.naming.NameNotFoundException: CounterBean not bound trying to access an EJB JAR CounterBean.jar deployed on JBoss5 from a client application outside the Application Server. From the Jboss log, it looks like it does not have a global JNDI name? Is this ok? What have I done wrong? JBoss log: 13:50:39,669 INFO [JBossASKernel] Created KernelDeployment for: Counter.jar 13:50:39,672 INFO [JBossASKernel] installing bean: jboss.j2ee:jar=Counter.jar,name=CounterBean,service=EJB3 13:50:39,672 INFO [JBossASKernel] with dependencies: 13:50:39,672 INFO [JBossASKernel] and demands: 13:50:39,673 INFO [JBossASKernel] partition:partitionName=DefaultPartition; Required: Described 13:50:39,673 INFO [JBossASKernel] jboss.ejb:service=EJBTimerService; Required: Described 13:50:39,673 INFO [JBossASKernel] and supplies: 13:50:39,673 INFO [JBossASKernel] jndi:CounterBean 13:50:39,673 INFO [JBossASKernel] Added bean(jboss.j2ee:jar=Counter.jar,name=CounterBean,service=EJB3) to KernelDeployment of: Counte r.jar 13:50:39,712 INFO [SessionSpecContainer] Starting jboss.j2ee:jar=Counter.jar,name=CounterBean,service=EJB3 13:50:39,727 INFO [EJBContainer] STARTED EJB: com.don.CounterBean ejbName: CounterBean 13:50:39,732 INFO [JndiSessionRegistrarBase] Binding the following Entries in Global JNDI: The client code is: public static void main(String[] args) throws NamingException, InterruptedException { InitialContext ctx = new InitialContext(); Counter s = (Counter)ctx.lookup("CounterBean/remote"); for(int i = 0; i < 100; i++ ) { s.printCount(i); Thread.sleep(1000); } } Error message: java -Djava.naming.provider.url=jnp://123.123.123.123:1099 -Djava.naming.factory.initial=org.jnp.interfaces.NamingContextFactory com.don.Client Exception in thread "main" javax.naming.NameNotFoundException: CounterBean not bound at org.jnp.server.NamingServer.getBinding(NamingServer.java:771) at org.jnp.server.NamingServer.getBinding(NamingServer.java:779) at org.jnp.server.NamingServer.getObject(NamingServer.java:785) at org.jnp.server.NamingServer.lookup(NamingServer.java:396) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:305) at sun.rmi.transport.Transport$1.run(Transport.java:159) at java.security.AccessController.doPrivileged(Native Method) at sun.rmi.transport.Transport.serviceCall(Transport.java:155) at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:535) at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTransport.java:790) at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:649) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) at java.lang.Thread.run(Thread.java:619) at sun.rmi.transport.StreamRemoteCall.exceptionReceivedFromServer(StreamRemoteCall.java:255) at sun.rmi.transport.StreamRemoteCall.executeCall(StreamRemoteCall.java:233) at sun.rmi.server.UnicastRef.invoke(UnicastRef.java:142) at org.jnp.server.NamingServer_Stub.lookup(Unknown Source) at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:726) at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:686) at javax.naming.InitialContext.lookup(InitialContext.java:392) at com.don.Client.main(Client.java:10)

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  • AppletClassLoader exception : class not found

    - by gautam
    Hi, I am getting exception when i am trying to open an applet in my jsp. My jsp and applet is in same directory. My code is like: <object classid="clsid:8AD9C840-044E-11D1-B3E9-00805F499D93" width="720" height="500"`enter code here` type="application/x-java-applet;version=1.5"> <param name="type" value="application/x-java-applet;version=1.5"> <param name="code" value="com.timer.AppletGenerator.class"> <param name="codebase" value="."> <param name="ARCHIVE" value="Applet.jar, jcommon-1.0.0.jar, jfreechart-1.0.0.jar, log4j-1.2.13.jar, itext-1.3.1.jar" embed width="720" height="500" type="application/x-java-applet;version=1.5" code="com.timer.AppletGenerator.class" codebase="." ARCHIVE='Applet.jar, jcommon-1.0.0.jar, jfreechart-1.0.0.jar, log4j-1.2.13.jar, itext-1.3.1.jar' > </embed> </object> My AppletGenerator.class is like: public class AppletGenerator extends JApplet { public void init() { //Some code } } earlier it was woking fine. But now when i sign and verify the new jar its giving exception: load: class com.timer.AppletGenerator.class not found. java.lang.ClassNotFoundException: com.timer.AppletGenerator.class at sun.applet.AppletClassLoader.findClass(Unknown Source) at java.lang.ClassLoader.loadClass(Unknown Source) at sun.applet.AppletClassLoader.loadClass(Unknown Source) at java.lang.ClassLoader.loadClass(Unknown Source) at sun.applet.AppletClassLoader.loadCode(Unknown Source) at sun.applet.AppletPanel.createApplet(Unknown Source) at sun.plugin.AppletViewer.createApplet(Unknown Source) at sun.applet.AppletPanel.runLoader(Unknown Source) at sun.applet.AppletPanel.run(Unknown Source) at java.lang.Thread.run(Unknown Source) Caused by: java.io.IOException: open HTTP connection failed. at sun.applet.AppletClassLoader.getBytes(Unknown Source) at sun.applet.AppletClassLoader.access$100(Unknown Source) at sun.applet.AppletClassLoader$1.run(Unknown Source) at java.security.AccessController.doPrivileged(Native Method) ... 10 more I have searched a lot but didnt get any correct answer. There are few posts regarding this in stactoverflow but that also didnt work. Thanks and Regards,

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  • JNDI / Classpath problem in glassfish

    - by Michael Borgwardt
    I am in the process of converting a large J2EE app from EJB 2 to EJB 3 (all stateless session beans, using glassfish 2.1.1), and running out of ideas. The first EJB I converted (let's call it Foo) ran without major problems (it was the only one in its ejb-module and I could completely replace the deployment descriptor with annotations) and the app ran fine. But after converting the second one (let's call it Bar, one of several in a different ejb-module) there is a weird combination of problems: The app deploys without errors (nothing in the logs either) There is an error when looking up Bar via JNDI When looking at the JNDI tree in the glassfish admin console, Bar is not present at all. Then when I look at the logs, I see this (Foo is the correct name of the EJB's remote interface of the first converted, previously working EJB): Caused by: javax.naming.NamingException: ejb ref resolution error for remote business interface Foo [Root exception is java.lang.ClassNotFoundException: Foo] at com.sun.ejb.EJBUtils.lookupRemote30BusinessObject(EJBUtils.java:425) at com.sun.ejb.containers.RemoteBusinessObjectFactory.getObjectInstance(RemoteBusinessObjectFactory.java:74) at javax.naming.spi.NamingManager.getObjectInstance(NamingManager.java:304) at com.sun.enterprise.naming.SerialContext.lookup(SerialContext.java:414) at com.sun.enterprise.naming.SerialContext.list(SerialContext.java:603) at javax.naming.InitialContext.list(InitialContext.java:395) at com.sun.enterprise.admin.monitor.jndi.JndiMBeanHelper.getJndiEntriesByContextPath(JndiMBeanHelper.java:106) at com.sun.enterprise.admin.monitor.jndi.JndiMBeanImpl.getNames(JndiMBeanImpl.java:231) ... 68 more Caused by: java.lang.ClassNotFoundException: XXX at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1578) at com.sun.ejb.EJBUtils.getBusinessIntfClassLoader(EJBUtils.java:679) at com.sun.ejb.EJBUtils.lookupRemote30BusinessObject(EJBUtils.java:348) ... 75 more This is followed by more exceptions for all the entries that (like Foo) do appear in the JNDI tree. These look like this: Caused by: javax.naming.NotContextException: BarHome cannot be listed at com.sun.enterprise.naming.SerialContext.list(SerialContext.java:607) at javax.naming.InitialContext.list(InitialContext.java:395) at com.sun.enterprise.admin.monitor.jndi.JndiMBeanHelper.getJndiEntriesByContextPath(JndiMBeanHelper.java:106) at com.sun.enterprise.admin.monitor.jndi.JndiMBeanImpl.getNames(JndiMBeanImpl.java:231) ... 68 more However, no exception for Bar, it does not appear in the log at all except one entry during deployment. The other EJBs in the same module do appear, as does Foo. Any ideas what could cause this or how to diagnose it further? The beans are pretty straightforward: @Stateless(name = "Foo") @RolesAllowed("FOOUSER") @TransactionAttribute(TransactionAttributeType.SUPPORTS) public class FooImpl extends BaseBean implements Foo { I'm also having some problems with the deployment descriptor for Bar (I'd like to eliminate it, but glassfish doesn't seem to like having a bean appear only in sun-ejb-jar.xml, or having some beans in a module declared in the descriptor and others use only annotations), but I can't see how that could cause the ClassNotFoundException on Foo. Is there a way to see the ClassPath that Glassfish is actually using?

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  • Python Ephem calculation

    - by dassouki
    the output should process the first date as "day" and second as "night". I've been playing with this for a few hours now and can't figure out what I'm doing wrong. Any ideas? Output: $ python time_of_day.py * should be day: event date: 2010/4/6 16:00:59 prev rising: 2010/4/6 09:24:24 prev setting: 2010/4/5 23:33:03 next rise: 2010/4/7 09:22:27 next set: 2010/4/6 23:34:27 day * should be night: event date: 2010/4/6 00:01:00 prev rising: 2010/4/5 09:26:22 prev setting: 2010/4/5 23:33:03 next rise: 2010/4/6 09:24:24 next set: 2010/4/6 23:34:27 day time_of_day.py import datetime import ephem # install from http://pypi.python.org/pypi/pyephem/ #event_time is just a date time corresponding to an sql timestamp def type_of_light(latitude, longitude, event_time, utc_time, horizon): o = ephem.Observer() o.lat, o.long, o.date, o.horizon = latitude, longitude, event_time, horizon print "event date ", o.date print "prev rising: ", o.previous_rising(ephem.Sun()) print "prev setting: ", o.previous_setting(ephem.Sun()) print "next rise: ", o.next_rising(ephem.Sun()) print "next set: ", o.next_setting(ephem.Sun()) if o.previous_rising(ephem.Sun()) <= o.date <= o.next_setting(ephem.Sun()): return "day" elif o.previous_setting(ephem.Sun()) <= o.date <= o.next_rising(ephem.Sun()): return "night" else: return "error" print "should be day: ", type_of_light('45.959','-66.6405','2010/4/6 16:01','-4', '-6') print "should be night: ", type_of_light('45.959','-66.6405','2010/4/6 00:01','-4', '-6')

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