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Failure to obtain the lock is a valid temporary situation so what happens if you retry the enlistment?
There was a recent change in this area (https://issues.redhat.com/browse/JBTM-3989 LRA coordinator can't handle parallel participant enlistments) which may be related but we haven't release the fix yet so it would be interesting to see if it's possible for you to test against the current repo (https://github.com/jbosstm/lra)?
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I could be way off the mark but could it be possible that org.apache.camel.service.lra.LRAClient is somehow incompatible with some update(s) to Narayana LRA coordinator?
--------------Regards,Alex
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Hi Alex, do you have any updates on this?I would like to add @Zheng Feng here who might know better the integration with Camel/Kafka.Kind regards,Marco
Hi Alex,Please can I ask if the answers provided have helped to understand the cause and address it or whether there is any more help that you might like us to try to provide?Thank you,TomOn Monday, July 7, 2025 at 3:09:50 PM UTC+1 Michael Musgrove wrote:I notice that I didn't answer all of your questions.
The object store is where the state of an LRA is stored. The state needs to be persisted reliably in order to provided transactional guarantees.
When an LRA coordinator starts it reloads any pending LRAs. If the LRA is Active then some participant somewhere is responsible for initiating the end phase of the LRA by asking the coordinator to cancel or close the LRA (https://download.eclipse.org/microprofile/microprofile-lra-2.0/microprofile-lra-spec-2.0.html#the-model).
The object store location and type are configured using properties. The underlying config is provided by ArjunaCore (https://www.narayana.io/docs/api/com/arjuna/ats/arjuna/common/ObjectStoreEnvironmentBean.html) but each integration (quarkus, camel, WildFly, etc) will expose a simplified config so you would need to check the documentation of whatever integration you are using.
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