Hello,
During capacity tests we've received permGen OOM
exception. The occupied space in the permGen area increases
rapidly. Any opinions?
On 7/3/07, *s erel* <[EMAIL PROTECTED]
<mailto:[EMAIL PROTECTED]>> wrote:
In our project we are creating a
StatefulRuleSession and saving it in a per-thread
context (i.e. Each thread has it's own
StatefulRuleSession):
ruleServiceProvider.getRuleRuntime().createRuleSession(contextName,
properties, RuleRuntime.STATEFUL_SESSION_TYPE);
When a thread session ends, we are calling release on
the previously created StatefulRuleSession.
Changing the following lines:
public abstract class AbstractHashTable
...
public Iterator iterator() {
// if ( this.iterator == null ) {
// this.iterator = new HashTableIterator(
this );
// }
//
// this.iterator.reset();
// return this.iterator;
HashTableIterator iterator = new
HashTableIterator(this);
iterator.reset();
return iterator;
}
Seems to solve the problem I've encountered. What's
your opinion?
On 7/2/07, *Mark Proctor* <[EMAIL PROTECTED]
<mailto:[EMAIL PROTECTED]>> wrote:
a working memory should be single threaded, so not
sure how this could be a race condition?
Mark
s erel wrote:
I've done a little debugging. The code fails
in the following segment:
public static class HashTableIterator
...
while ( this.entry == null ) {
this.row++;
if ( this.row == this.length ) {
return null;
}
this.entry =
this.table[this.row]; *// ---> index out of bounds
exception*
}
}
this.row has the same value as this.length despite
the condition above it. Probably a race condition
issue.
On 7/2/07, *Mark Proctor* <[EMAIL PROTECTED]
<mailto:[EMAIL PROTECTED]>> wrote:
Not really :(
In your situation I tend to keep removing
rules and data while still making sure the
error happens, to get it down to a minimum.
Please do try, as this isn't an error that
should happen. Or alterntaively you can open
drools-core and drools-compiler in eclipse and
execuse and debug this yourself - in your
situation this might best. you can put in a
breakpoint to listen for that particular
exception.
Mark
s erel wrote:
It's hard for me to provide a self contained
project. The drl is long and uses several
business objects. It's the same drl as we've
been using for 306 minus the keyword changes.
Is there anything else i can check or provide
you in order to solve this matter.
Thanks
On 7/1/07, *Mark Proctor*
<[EMAIL PROTECTED]
<mailto:[EMAIL PROTECTED]>> wrote:
Can you provide us a self contained
project which creates this error? Unless
we can recreate it, it will be very hard
to track it down. Please attach the
project to a jira and we'll make it a
priority.
Mark
s erel wrote:
Hello,
I've just started integrating MR3 into
my project (I've previously
used 3.06). The drl compiles and
everything seems fine, but during
tests the following exception is thrown
for time to time:
java.lang.ArrayIndexOutOfBoundsException: 17
at
org.drools.util.AbstractHashTable$HashTableIterator.next(AbstractHashTable.java:250)
at
org.drools.reteoo.Rete$ObjectTypeConf.buildCache(Rete.java:434)
at
org.drools.reteoo.Rete$ObjectTypeConf.getObjectTypeNodes(Rete.java:425)
at
org.drools.reteoo.Rete.assertObject(Rete.java:172)
at
org.drools.reteoo.ReteooRuleBase.assertObject(ReteooRuleBase.java:190)
at
org.drools.reteoo.ReteooWorkingMemory$WorkingMemoryReteAssertAction.execute
(ReteooWorkingMemory.java:163)
at
org.drools.common.AbstractWorkingMemory.executeQueuedActions(AbstractWorkingMemory.java:1135)
at
org.drools.common.AbstractWorkingMemory.insert(AbstractWorkingMemory.java:781)
at
org.drools.common.AbstractWorkingMemory.insert(AbstractWorkingMemory.java:584)
at
org.drools.jsr94.rules.StatefulRuleSessionImpl.addObject(StatefulRuleSessionImpl.java:162)
This only happens during high load tests.
Can anyone help me?
Thanks
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