How to call one jar file with other

redssr · 10-01-2013, 09:27 AM

Hi,

All,

Sorry for my poor English, but i tried to explain my problem as simple as possible

We have a application which runs on java 1.6 and above. This application consists of two jar files, one is main jar file and other we had named it as angel as it is run in background through main jar.

Both the jar files runs on different ports.

Now the scene is when we run the main jar file with cmd as

java -jar jarfilename in windows the second jar gets ran automatically as expected. Both the jar runs on different ports and the application runs without interruption.

But when we do the same thing in Linux system one of the jar gets nonfunctional after 15 min with port remaining open and the application does not runs as per our expectaions.

The strange thing is when we run both the jars separately on Linux, non of the jars gets stuck and application runs as per out expectations.

Kindly let me now what i would need to do on OS level so that our application runs as per our expectations.

Will be awaiting for the response.

Thanks and Regards,

redssr.

ajo0909 · 10-01-2013, 02:16 PM

It depends on what your angel app does. If it for examples opens periodically some ports or writes something to files on the system, then it could be the file descriptor use limt problem. And perhaps setting the ulimt to something higher then the usual value of 1024 would help (for example :
Setting ulimit:

# ulimit -n 99999

or over Sysctl max files command:

#sysctl -w fs.file-max=100000

or in the /etc/sysctl.conf file. )

Alternatively you could perhaps think of the better way to solve the problem at hand for your second application then useing that much of the file access operations.

redssr · 10-07-2013, 03:10 AM

Hi,

Friends,

As per your suggestion i tried both the options seperately as well as combinedly but no difference. But when i run both the jars seprately, they runs without interuptions.

Code:

ulimit -n 99999
sysctl -w fs.file-max=100000

Thanks and Regards,

redssr

pan64 · 10-07-2013, 03:37 AM

do these jars have logs? Probably you can find some relevant info in the logs. Also try to increase the memory of the JVM, probably it helps. http://wiki.vuze.com/w/Java_VM_memory_usage

redssr · 10-07-2013, 04:51 AM

Hi,

Friends,

Tried your this option also, but no difference. I still need to start both the jars seprately.

Regards,

redssr

eSelix · 10-07-2013, 05:37 AM

Can you show an excerpt of source of how you start this "angel" .jar file from "main" .jar? The best if you could give full source or link to jars of both files.

redssr · 10-07-2013, 05:55 AM

Hi,

Here how we startsit,

Code:

java -jar -Xms1024 -Xmx2560 Opensync-server-platform-1.3.0.jar com.qarea.opendoc.server.Application (this is the main jar which run as seerver application

java -jar -Xms1024 -Xmx2560 Opensync-angel-services-1.3.0.jar angel.plugin.Main (this is the angel process)

For more info, there are no any errors in the log file.

Regards,
redssr

eSelix · 10-08-2013, 04:41 AM

Yes, but how you start "Opensync-angel-services-1.3.0.jar" FROM INSIDE "Opensync-server-platform-1.3.0.jar"? I mean the source code. I am afraid without full source code it will be impossible to guess what is wrong.

redssr · 10-08-2013, 05:49 AM

Hi,

Friend,,

here is my code.

Code:

String cmd = "java -jar Opensync-angel-services-1.3.0.jar ";
Runtime.getRuntime().exec(cmd);

Regards,

redssr

pan64 · 10-08-2013, 06:25 AM

that will explicitly start another JVM and run that angel jar in it. But the -Xms1024 -Xmx2560 flags are missing. Probably that causes the problem.

redssr · 10-08-2013, 07:55 AM

Hi,

Friend,

Now the angel service is not getting started after adding yr parameters in code.

Code:

String cmd = "java -jar -Xms1024m -Xmx2560m Opensync-angel-services-1.3.0.jar ";
Runtime.getRuntime().exec(cmd);

No logs.

Code:

We tried it upto -Xmx4096m

Regards,

redssr

pan64 · 10-08-2013, 08:01 AM

I assume you have not checked the possible error messages/cases, therefore it was suppressed. See an example on how to catch exception here: http://www.coderanch.com/t/419192/ja...String-command

redssr · 10-09-2013, 09:45 AM

Hi,

Friends,

Getting bellow error.

Code:

java.lang.InterruptedException
        at java.lang.Object.wait(Native Method)
        at java.lang.Object.wait(Object.java:167)
        at java.lang.UNIXProcess.waitFor(UNIXProcess.java:115)
        at com.qarea.opendoc.server.sm.socket.AngelSocket.startAngelPlugin(AngelSocket.java:59)
        at com.qarea.opendoc.server.sm.socket.AngelSocket.run(AngelSocket.java:28)
 - Dt : 2013-10-09 06:57:11.76 : EXCP

Regards,
redssr