Re: James 3.8, JPA Keeps Crashing // ActiveMQ Issue

Hi Gilberto,

I ain't much of a JPA expert but I will try to answer to the best of my 
capabilities, hoping it helps you.

I think the EmbeddedActiveMq class creates a default activemq broker 
with default storage settings, which must be around 20mb. The attachment 
of your user seems slitghly bigger than this limit, filling up the 
queue. James keeps crashing then I guess as the message keeps staying in 
the queue.

Is the faulty email important to keep or not? If not can try to clear 
away the queue. The data of activemq should be inside the container at 
/var/store/activemq.

I think you can try to clean what's in 
/var/store/activemq/brokers/KahaDB/* (cf 
https://github.com/apache/james-project/blob/3.8.x/server/queue/queue-activemq/src/main/java/org/apache/james/queue/activemq/EmbeddedActiveMQ.java)

I guess you could back up the data as well, from /var/store/activemq, 
and reinject the data in an external volume with more space that you can 
mount then in /var/store/activemq ?

There is unfortunately no configuration for ActiveMQ storage space. The 
configuration file would be activemq.properties, but I think it is just 
about some metrics configuration so far. But maybe that could be a nice 
contribution to propose?

Regarding the migration from 3.8 to 3.9, here there is a file for 
upgrade instructions in general: 
https://github.com/apache/james-project/blob/master/upgrade-instructions.md#390-version

I must admit people need to figure out which upgrade concerns which 
product, if concerned or not, it's not really practical sorry. We got 
room for improvement here I think too.

Let me know if this helps you.

Good luck :)

Rene.

On 4/3/26 08:05, Gilberto Espinoza wrote:
> Hi Apache James Brain Trust,
>
> I am having issues with my James server. I am running James 3.8, JPA in a
> Docker Container. A user was attempting to email a large video file and
> that seems to have crashed the server. I get this message in the log file:
>
> [WARN ] o.a.a.b.r.Queue - Usage(Main:store:queue://spool:store)
> percentUsage=100%, usage=20779975, limit=20765548,
> percentUsageMinDelta=1%;Parent:Usage(Main:store) percentUsage=100%,
> usage=20779975, limit=20765548, percentUsageMinDelta=1%: Persistent store
> is Full, 100% of 20765548. Stopping producer
> (ID:7a04cd6de807-43041-1775136440917-5:2:1:1) to prevent flooding
> queue://spool.
>
> I am struggling to figure out how to resolve this issue (I found this link,
> but I am unable to figure where the ActiveMQ files are located) (
> https://knowledge.informatica.com/s/article/Persistent-store-is-Full-100-of-Stopping-producer-ID-to-prevent-flooding-error-in-DataExchange-logs?language=en_US
> ).
>
> I would appreciate your help in resolving this issue (restarting the server
> has not helped). How do you stop the "producer"?
>
> Also, where can I find the configuration file for ActiveMQ?
>
> I would also like to know how to back up the database files, if that is
> possible?
>
> Is there any documentation on how to migrate from 3.8 to 3.9?
>
> I look forward to any feedback.
>
> Best regards,
>
> Gil Espinoza
>