[jdom-interest] SAXBuilder.build() hangs JVM using JDOMBeta 9

Alex Rosen arosen at novell.com
Mon Nov 3 10:12:37 PST 2003

Hmm. That sounds like a VM bug doesn't it? Java code shouldn't be able
to hang the VM itself. What VM and what platform are you using?


>>> "Forsberg,Michael" <Michael.Forsberg at tre.se> 11/3/2003 3:44:42 AM
Hi Alex,

The problem is that when the application hangs the java process is not
responding to any kernel signals at all. The applications starts to
create a number of threads that starts-up and when some of the threads
has started to build the JDOM-document the process hangs. I've done a
thread dump just before the process hangs and I can do this again and
send the information to the list.


-----Original Message-----
From: Alex Rosen [mailto:arosen at novell.com] 
Sent: den 2 november 2003 21:14
To: jdom-interest at jdom.org; Forsberg,Michael
Subject: Re: [jdom-interest] SAXBuilder.build() hangs JVM using

I don't remember anyone ever reporting this. Do you want to send the
thread dump to the mailing list?


>>> "Forsberg,Michael" <Michael.Forsberg at tre.se> 10/31/2003 7:50:01 AM

My application has the purpose to parse and validate a large amount of
XML-files and application is creating a number of threads that get a
task from a synchronized list what XML file to start validating. When
the thread has finished to validate XML-file it goes back to the
synchronized list and gets a new file from the taskManger. I've
the application and found that the JVM sometimes hangs and is not
responding to any kill signals, used -QUIT, to get a stack dump. After
that 2-3 threads has starting to build the JDOM-Document the

Has anyone excepted the same problem with the build() operation?


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