topic Re: ConcurrencyFailureException in Alfresco Archive

ConcurrencyFailureException

rjohnson — Sun, 04 May 2014 08:46:01 GMT

We are currently creating an interface to allow an imaging system to store images in alfresco against an event record document.The process is that the imaging system calls a SOAP object that creates the event record document and then the imaging system calls another method on the SOAP object to crea

Re: ConcurrencyFailureException

angelborroy — Mon, 05 May 2014 16:12:00 GMT

Actually this is not a database exception, it occurs on NodeService Java class when updating a node: if some other process is modifying it, you obtain this exception. Maybe a good point is to put your process on background and retry until the node is released.

<java>
public abstract class AbstractNodeDAOImpl implements NodeDAO, BatchingDAO
{

    private boolean updateNodeImpl(Node oldNode, NodeUpdateEntity nodeUpdate, Set<QName> nodeAspects)
    {

        // Do concurrency check
        if (count != 1)
        {
            // Drop the value from the cache in case the cache is stale
            nodesCache.removeByKey(nodeId);
            nodesCache.removeByValue(nodeUpdate);

            throw new ConcurrencyFailureException("Failed to update node " + nodeId, concurrencyException);
        }

    }
}

</java>

However, we solved an issue like this including our node modifications as a behavior.

Re: ConcurrencyFailureException

spilby — Mon, 19 May 2014 08:18:46 GMT

I have the same issue. I'm using Alfresco Enterprise v4.1.6

I create a new node and then modify some properties of the parents doing a getNodeService().addProperties.

Sometimes, this addProperties fails and give me a org.springframework.dao.ConcurrencyFailureException: Failed to update node 288941

And when it occurs, I can't see the node that I create and can't doing anything on this node. Only works again if I restart Alfresco tomcat server.

I don't understand the last solution, sorry. This only delete the node that gives me problem. It's ok? But what is count? And nodesCache?

Thank you!

Regards,

Jordi

Re: ConcurrencyFailureException

angelborroy — Mon, 19 May 2014 10:12:25 GMT

The solution is to implement your changes by using behaviors: onCreateNode event should be a good point to start.

Included code was only the piece of Alfresco code which is launching Concurrency Exception.