JBoss not responding to valid URLs - jsf-2

I encountered strange behavior of an JBoss AS 7 on linux server. When I deploy war with my application, the server doesn't respond for valid HTTP requests for this app. When I try to GET a valid URL, I can see in logs, that backend functions (e.g. DAO methods) are called, debug logs shows that subsequent tags in my JSF are rendered, I even can see a message Rendering View index.xml, but the response never reaches the client.
When I use a non-existent URL (e.g. index.asd) response is 404 and when I use a wrong page name (e.g. inswxasd.xhtml) the response is 500. Thus it fails only with valid requests.
I tried to connect both remotely (using firefox) and locally (with wget) and I reproduced the problem. The strange thing is that I deploy the war that I already used and then it worked.
EDIT 1:
I've just noticed that when I send a request to, the server process takes 200% of CPU. Additionally it happens for only one application with stack: Hibernate, Spring, JSF 2.0, Primefaces.
EDIT 2:
Here is pastie with jstack output (jstack -l -F <PID>). All threads are blocked.
Additionally I noticed (using top and dumping stack of the JBoss process) that the problem is most probably caused by a thread called http--0.0.0.0-8080-1. Any ideas?

Thanks for help. I reverted the database to previous state, and it started to work. Apparently there was a problem in the data that caused this infinite loop. Now we need to find it, but as it is reproducible, I'll manage.

Related

Umbraco scheduledTasks not working

I have a scheduled task that I want to run every 5 minutes.
I added the url for my method in umbracoSettings.config and the necessary settings but scheduledTasks doesn't seem to be running.
I tried debugging it by calling the url from the browser and I do hit my break point.
I tried checking the logs but there are no errors being recorded. Is this a bug in umbraco? How can I know that the scheduled task is running?
<scheduledTasks>
<!-- add tasks that should be called with an interval (seconds) -->
<task log="true" alias="task1" interval="300" url="http://localhost:43203/umbraco/api/Integration/Init"/>
</scheduledTasks>
I'm using Umbraco 7.5.8
I never had trouble using scheduledTasks in other versions of Umbraco.
The main issue I've seen with scheduled tasks is when the server that's running can't resolve the address in the task. Sometimes a server can be so locked down it can't actually "see" itself, so it can't get to the URL to run it. If this was the case though, you'd normally see some errors in the Umbraco TraceLog file in /App_Data/Logs/.
If your breakpoint isn't getting hit, you could try adding some logging code to the method you're calling and see if that gets written to the Umbraco log files? That way you should be able to tell if it's being hit or not.
Its working now. if you look at umbracoServer table in the database you will see a column isMaster.
The scheduledTasks is only running on the master server.

Django+uwsgi: uwsgi_response_write_body_do(): Broken pipe [core/writer.c line 248]

I have this weird issue in my django application. I am using the admin interface. When I try to load the change page it doesn't render completely and when i see in logs it says:
**uwsgi_response_write_body_do(): Broken pipe [core/writer.c line 248]
IOError: write error**
The page has been working fine before and suddenly this started happening. And also the behavior is inconsistent. If I reload the page multiple times, few times it renders correctly. This issue is happening in production environment and I am not able to replicate it on my local. The production server is using uwsgi 1.9.10 with nginx and django 1.5. Also I am writing custom HTML on page and there is an inline table also on the same page.
Please let me know if anyone knows why it is happening...
that error means the client (browser) disconnected before getting the full response. Check your webserver logs, maybe you hit a timeout

Repeated "java.lang.IllegalStateException: Cannot forward after response has been committed" errors with Grails and Tomcat

Please see my post on the Grails user mailing list. Essentially, I get the error "Cannot forward after response has been committed" with Grails 2.x after every few requests. This happens for all types of URLs, controllers, GSPs, CSS files, JS files and even image files. I have tried Grails 2.0.0 and Grails 2.0.1 with Tomcat 6.0.35 and Tomcat 7.0.25 on Windows XP 32-bit, Windows 7 32-bit and Centos 64-bit. The error comes up on all these combinations.
As I have mentioned in my post, there are no response.redirect or response.forward statements in our code. This is causing severe problem on our production application so need help in determining what else can be looked at to get to the bottom of the problem.
This has been solved. In one of the controllers in the application, response output stream was being directly written to but not closed explicitly after the operation was over. It seems Tomcat and Jetty recycle response objects. When a response object that did not have their output stream closed earlier was recycled for a future request and redirect was performed on it, the redirect would fail.
The code has been changed and the error has disappeared now. The lesson learned is that any time such an error occurs, scan the entire code base for direct access to response output stream and close output stream responsibly before existing controller methods.
You should create a new grails application and move the controllers, domains and etc yourself rather than grails update.
When you do that also make sure you look into the configuration files of grails.
Also take a look at what plugins you have.
Also, when moving the files, try out the application once in a while when it is possible, and perhaps you can detect when the error arises. Start out by trying it in your most basic controller and see if the error is there then as well.
Good luck.

Grails + Netbeans + Apache Tomcat

So I have my grails server running with netbeans and i'm codding new features / testing in my browser at same time. For some reason, sometimes when i change code im domain classes and then save and refresh my page, the server seems to go down but in reality, it is still running. I get this error:
HTTP Status 404 -
type Status report
message
description The requested resource () is not available.
Apache Tomcat/6.0-snapshot
Any idea how to solve that? Because its really anoying, i make changes and then when i want to visualize it the server goes down. Any help would be apreciated.
If you change anything in a domain class and save it your app will get re-deployed and may take a minute (404 in the meantime). You can change views and controllers without the app being re-deployed and you should see the changes as soon as you save and refresh.
Does this help?

Starting a windows service fails with error 1053

I have a windows service that is failing to start, giving an error "Error 1053: The service did not respond to the start or control request in a timely fashion".
Running the service in my debugger works fine, and if I double click on the the service .exe on the remote machine a console window pops up and continues to run without problem - I can even see log messages showing me that the program is processing everything the way it should be.
The service had been running fine previously, though this is my first time, personally, trying to deploy it with the most recent changes made to the program. I've evaluated those changes and cant figure out how they might cause this problem, particuarly since everything runs fine when not started as a service.
The StartRoutine() method of the service impelmentation is empty, so should be returning in a "timely fashion".
I've checked the event logs on the computer, and it doesn't give any additional information other than it didn't hear back from the service in the 30 second requisite time frame.
Since it works on my machine, and as a double-clicked executable, how would I go about figuring out why it fails as a service?
Oh, and it's .NET 2.0, so it shouldn't be affected by the 1.1 framework bug that exhibited this symptom (http://support.microsoft.com/kb/839174)
The box is a windows server 2003 R2 machine running SP2.
This is a misleading error. It's probably an unhandled exception.
Empty your OnStart() handler then try this in your constructor...
public MainService()
{
InitializeComponent();
try
{
// All your initialization code goes here.
// For instance, my exception was caused by the lack of registry permissions
;
}
catch (Exception ex)
{
EventLog.WriteEntry("Application", ex.ToString(), EventLogEntryType.Error);
}
}
Now check the EventLog on your system for your Application Error.
Could be a number of things and it might help to get a stack trace on the machine exhibiting the problem. There are a number of ways to do this but the point is that you have to see where this is failing in the code.
You can do this with remote debugging, but a simple thing might be to just log to the event logger, or file log if you have that. Literally, putting "WriteLine("At class::function()") throughout portions of the code to see if you've made it there.
This will at least get you looking in the right direction (which ultimately is the code).
Update:
See Microsoft's How to Debug Windows Services article for details in troubleshooting startup problems using WinDbg.
This related question details nice ways to debug services that are written in .NET.
I agree with Scott, the easiest way to find out what's happening is to put some traces in the start-up code (maybe it doesn't even come to your start-up code).
If this doesn't help, you can post your code here so others can take a look.
perhaps lacking some dependence, try this :
- deregister your service
- register again
If fail at register means that lack an module.
If the StartRoutine is empty, you are probably starting it somewhere else.
IIRC you need to fire off a worker thread, and then return from StartRoutine.
One of the problems which may lead to this error is if windows service which needs to be deployed consists of some error i.e it may be simple authorization error or anything as in my case I have referenced some folders and files for logging which were not existing, but when provided the right path of those file and folders it solved my problem.
I ran through every post on this particular subject and none of the responses solved the problem, so I'm adding this response in case this helps someone else. Admittedly this only applies to a new service, not this specific case.
I was writing a File listening service. As a console app, it worked perfectly. When I ran it as a service, I got the same error as above. What I didn't know (and many of the MSDN articles about services conveniently leave out) is that you need to have your class executed from within ServiceBase.Run( YourClassName());. Otherwise, your app executes and immediately terminates and because it terminated, you get the error above even if no error or exception occurred. Here is a link to an article about this. It actually discusses setting up your app for dual use - Console app and service: Create a combo command line / Windows service app
I had that issue and the source of my problem was config file. I edited it in notepad and notepad added one special character which cause service not to run properly because config file was ruined. I saw that special character in notepadd++ and after delete it, service started to run successfully as previous did.
In my case, the correct .NET framework was not installed on the server that I was installing the Windows service on.
One other reason is If you copy the DLL in 'debug' mode to installation folder this issue will come.What you need to do is Run the project in 'Release' mode copy the DLL or directly form Release folder rather than Debug folder,,and copy that DLL in to installation folder,it will work.You can see the reduction in size of DLL ,it will not contain any debug symbols and like that

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