kill -3 [JVM-process-id] (SIGQUIT)
sends a signal to the JVM to dump all thread stacks. It does NOT kill
it. It's only for outputting the stacks. You can see whether there are
any threads that lock up.
This produces a LOT of output in the main logfile (e.g. catalina.out for
Tomcat).
(see for example
http://www.unixville.com/~moazam/stories/2004/05/18/debuggingHangsInTheJvm.html
and others)
Otis Gospodnetic schrieb:
Nicolae,
You may be able to figure things out from the heap dump. You'll need to start
the JVM like this, for example:
java -XX:+HeapDumpOnOutOfMemoryError -XX:HeapDumpPath=/tmp/heap .......
Otis
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----- Original Message ----
From: Nicolae Mihalache <xproma...@yahoo.com>
To: solr-user@lucene.apache.org
Sent: Thursday, July 30, 2009 3:54:41 PM
Subject: How to get a stack trace
Hello,
I'm a new user of solr but I have worked a bit with Lucene before. I get some
out of memory exception when optimizing the index through Solr and I would like
to find out why.
However, the only message I get on standard output is:
Jul 30, 2009 9:20:22 PM org.apache.solr.common.SolrException log
SEVERE: java.lang.OutOfMemoryError: Java heap space
Is there a way to get a stack trace for this exception? I had a look into the
java.util.logging options and didn't find anything.
My solr runs in some standard configuration inside jetty.
Any suggestion would be appreciated.
Thanks,
nicolae
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Consultant
mobil +49 (176) 10 00 09 45
email chantal.ackerm...@btelligent.de
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