Edson Tirelli-3 wrote:
>
> Dan,
>
> I am not aware of any memory leak in CR1. If you can provide me with
> a
> test case I will investigate this today. Please open a JIRA, attach your
> test case and let me know. If there is a leak, I need to fix it before
> final
> release.
>
> And it is not a problem to instantiate objects in a rule's
> consequence.
> That is "business as usual".
>
> Thanks,
> Edson
>
> 2010/7/28 dmiller44 <
dmiller@versatile.com>
>
>>
>> Hello,
>>
>> I have a weird issue, and I'm trying to figure out if this is a bug I
>> should
>> report, or an error in my rule. I'm running an application with a heap
>> space (min: 512mb, max: 1024mb) that gets full and eventually overflows
>> relatively quickly (12hrs or less). We insert about 112 records into a
>> Stateful Drools Session (Drools 5.1 CR1 released 7/22/2010) every
>> 30seconds,
>> using CLOUD session type, single thread, with fireUntilHalt.
>>
>> Our rules evaluate the object (A) we give it, and in some cases
>> instantiate
>> a new object (B) and insert it into the session. After processing object
>> (A), we retract it from the session.
>>
>> Another rule matches on object (B), and when finished, also retracts the
>> object.
>>
>> When I do a heap snapshot, I've noticed quite a few Drools-related
>> classes,
>> along with unreleased instantiations of object(A) & object(B) (more of
>> the
>> latter). Obviously I have to take into consideration that objects are
>> being
>> inserted at the time of the snapshot, but over a couple hours I'll have
>> 1000's of these objects. I've found the only fix to be to release the
>> session.
>>
>> I should note - calling session.getObjects() shows an empty list (size
>> 0).
>>
>> Is this a bug? When retract is called, shouldn't it free up the
>> FactHandle
>> &
>> Object to be collected? And is instantiating an object in a rule
>> incorrect
>> for some reason?
>>
>> Below is a small chart of classes - the number of instances - and space
>> taken. (TemperatureEvent represents object (A), while AssetShallowRemote
>> represents object (B)) Any input would be appreciated.
>>
>> Dan
>>
>>
>> | Class |
>> Instances
>> |
>> Size | |
>>
>> |--------------------------------------------------------------+-----------+----------+---|
>> | java.lang.String |
>> 1155258
>> |
>> 41589288 | |
>> | char[] |
>> 1153540
>> |
>> 91560120 | |
>> | java.util.concurrent.LinkedBlockingQueue$Node |
>> 329989
>> |
>> 10559648 | |
>> | java.util.LinkedHashMap$Entry |
>> 153489
>> |
>> 9209340 | |
>> | java.util.HashMap$Entry |
>> 151929
>> |
>> 6684876 | |
>> | java.sql.Timestamp |
>> 117017
>> |
>> 4212612 | |
>> | org.drools.reteoo.LeftTuple |
>> 53395
>> |
>> 8756780 | |
>> | org.drools.common.AgendaItem |
>> 53390
>> |
>> 5819510 | |
>> | org.drools.retoo.RightTuple |
>> 53386
>> |
>> 5125056 | |
>> | my.test.package.AssetShallowRemote | 42995 | 11780630 | |
>> | org.drools.common.DefaultFactHandle |
>> 37273
>> |
>> 3280024 | |
>> | org.drools.core.util.ObjectHashSet$ObjectEntry |
>> 37273
>> |
>> 1341828 | |
>> | org.drools.common.PropagationContextImpl |
>> 32721
>> |
>> 2683512 | |
>> | org.drools.core.util.ObjectHashMap$ObjectEntry |
>> 32721
>> |
>> 1639924 | |
>> | my.test.package.TemperatureEvent | 7165 |
>> 917120 | |
>>
>> --
>> View this message in context:
>>
http://drools-java-rules-engine.46999.n3.nabble.com/Drools-Objects-not-released-from-heap-tp1002541p1002541.html
>> Sent from the Drools - User mailing list archive at Nabble.com.
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>>
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>>
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>>
>
>
>
> --
> Edson Tirelli
> JBoss Drools Core Development
> JBoss by Red Hat @
www.jboss.com
>
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