Exception in thread "Dispatcher-Thread-0"
java.util.ConcurrentModificationException
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Key: OFBIZ-1555
URL: https://issues.apache.org/jira/browse/OFBIZ-1555
Project: OFBiz
Issue Type: Bug
Components: framework
Environment: Linux - Ubuntu-Dapper 6.06 64bits, Java HotSpot(TM)
64-Bit Server VM (build 1.5.0_06-b05, mixed mode) (tried also with version
1.6), postgres 8.1
Reporter: Gustavo Sardi
we are customizing an ofbiz application from base version ofbiz-r536978, our
changes are at the app level, we have not changed much of the framework.
after several month of work we are in production now, as we are getting more
users online (even not more than 5) we are having this exception randomly, the
appserver stop responding and the only solution is to kill it by issuing a
'kill -9' as root at the server, the script stopobiz.sh does nothing.
this error is most often seen when working with orders (stock reservation
process and such) and generating PDF files for printing.
we tried changing log4j lib version to 1.2.15
we tried turning off logging with no result
there was something about async and sync issues writing to the logs in
log4j.xml but the version we have seams to have the sync mode of writing.
we searched several forums and have not seen this issue anywhere, does anyone
has any idea to share?
thanks
here is the last part of console.log
2007-12-30 12:22:11,680 (http-0.0.0.0-8443-Processor3)
[StaticContentLayoutManager.java:246:WARN ] static-content overflows the
available area. (fo:static-content, location: 17/13)
2007-12-30 12:22:11,724 (http-0.0.0.0-8443-Processor3) [
TableLayoutManager.java:170:INFO ] table-layout="fixed" and width="auto", but
auto-layout not supported => assuming width="100%"
2007-12-30 12:22:11,789 (http-0.0.0.0-8443-Processor3)
[StaticContentLayoutManager.java:246:WARN ] static-content overflows the
available area. (fo:static-content, location: 17/13)
2007-12-30 12:22:11,813 (http-0.0.0.0-8443-Processor3) [
TableLayoutManager.java:170:INFO ] table-layout="fixed" and width="auto", but
auto-layout not supported => assuming width="100%"
2007-12-30 12:22:11,854 (http-0.0.0.0-8443-Processor3)
[StaticContentLayoutManager.java:246:WARN ] static-content overflows the
available area. (fo:static-content, location: 17/13)
Exception in thread "Dispatcher-Thread-0"
java.util.ConcurrentModificationException
at
java.util.LinkedList$ListItr.checkForComodification(LinkedList.java:617)
at java.util.LinkedList$ListItr.next(LinkedList.java:552)
at java.util.AbstractCollection.toString(AbstractCollection.java:453)
at org.apache.log4j.or.DefaultRenderer.doRender(DefaultRenderer.java:36)
at org.apache.log4j.or.RendererMap.findAndRender(RendererMap.java:80)
at
org.apache.log4j.spi.LoggingEvent.getRenderedMessage(LoggingEvent.java:362)
at
org.apache.log4j.helpers.PatternParser$BasicPatternConverter.convert(PatternParser.java:403)
at
org.apache.log4j.helpers.PatternConverter.format(PatternConverter.java:65)
at org.apache.log4j.PatternLayout.format(PatternLayout.java:502)
at org.apache.log4j.WriterAppender.subAppend(WriterAppender.java:302)
at org.apache.log4j.WriterAppender.append(WriterAppender.java:160)
at org.apache.log4j.AppenderSkeleton.doAppend(AppenderSkeleton.java:251)
at
org.apache.log4j.helpers.AppenderAttachableImpl.appendLoopOnAppenders(AppenderAttachableImpl.java:66)
at org.apache.log4j.AsyncAppender$Dispatcher.run(AsyncAppender.java:583)
at java.lang.Thread.run(Thread.java:595)
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