StaleItemStateException in BRMS 5.3

Issue

• I get some Exceptions under Guvnor REST API load test which uploads spreadsheets.

17:45:44,791 ERROR [UserInfo] Unable to save
javax.jcr.InvalidItemStateException: Unable to update a stale item: item.save()
    at org.apache.jackrabbit.core.ItemSaveOperation.perform(ItemSaveOperation.java:262)
    at org.apache.jackrabbit.core.session.SessionState.perform(SessionState.java:200)
    at org.apache.jackrabbit.core.ItemImpl.perform(ItemImpl.java:91)
    at org.apache.jackrabbit.core.ItemImpl.save(ItemImpl.java:329)
    at org.drools.repository.UserInfo.save(UserInfo.java:197)
    at org.drools.guvnor.server.repository.UserInbox.save(UserInbox.java:190)
    at org.drools.guvnor.server.repository.UserInbox.recordUserEditEvent(UserInbox.java:185)
    at org.drools.guvnor.server.repository.RepositoryStartupService$1.afterCheckin(RepositoryStartupService.java:110)
    at org.drools.repository.events.StorageEventManager.doCheckinEvents(StorageEventManager.java:96)
    at org.drools.repository.VersionableItem.checkin(VersionableItem.java:588)
    at org.drools.guvnor.server.jaxrs.PackageResource.updateAssetBinary(PackageResource.java:773)
...
Caused by: org.apache.jackrabbit.core.state.StaleItemStateException: d520df2c-9678-4a21-81b3-b51243b82984/{}recentEdited has been modified externally
    at org.apache.jackrabbit.core.state.SharedItemStateManager$Update.begin(SharedItemStateManager.java:663)
    at org.apache.jackrabbit.core.state.SharedItemStateManager.beginUpdate(SharedItemStateManager.java:1458)
    at org.apache.jackrabbit.core.state.SharedItemStateManager.update(SharedItemStateManager.java:1488)
    at org.apache.jackrabbit.core.state.LocalItemStateManager.update(LocalItemStateManager.java:351)
    at org.apache.jackrabbit.core.state.XAItemStateManager.update(XAItemStateManager.java:354)
    at org.apache.jackrabbit.core.state.LocalItemStateManager.update(LocalItemStateManager.java:326)
    at org.apache.jackrabbit.core.state.SessionItemStateManager.update(SessionItemStateManager.java:289)
    at org.apache.jackrabbit.core.ItemSaveOperation.perform(ItemSaveOperation.java:258)

17:45:43,168 WARN  [ItemSaveOperation] /drools:repository/user_info/mailman/inbox/jcr:content/incoming: failed to restore transient state
javax.jcr.RepositoryException: org.apache.jackrabbit.core.state.ItemStateException: there's already a property state instance with id f4ca4817-024d-4c6d-9482-23aa37e115f9/{}incoming
    at org.apache.jackrabbit.core.PropertyImpl.restoreTransient(PropertyImpl.java:195)
    at org.apache.jackrabbit.core.ItemSaveOperation.restoreTransientItems(ItemSaveOperation.java:879)
    at org.apache.jackrabbit.core.ItemSaveOperation.perform(ItemSaveOperation.java:277)
    at org.apache.jackrabbit.core.session.SessionState.perform(SessionState.java:200)
    at org.apache.jackrabbit.core.ItemImpl.perform(ItemImpl.java:91)
    at org.apache.jackrabbit.core.ItemImpl.save(ItemImpl.java:329)
    at org.apache.jackrabbit.core.session.SessionSaveOperation.perform(SessionSaveOperation.java:42)
    at org.apache.jackrabbit.core.session.SessionState.perform(SessionState.java:200)
    at org.apache.jackrabbit.core.SessionImpl.perform(SessionImpl.java:355)
    at org.apache.jackrabbit.core.SessionImpl.save(SessionImpl.java:758)
    at org.drools.repository.RulesRepository.save(RulesRepository.java:1408)
    at org.drools.guvnor.server.repository.MailboxService.processOutgoing(MailboxService.java:115)
    at org.drools.guvnor.server.repository.MailboxService$3.run(MailboxService.java:142)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
    at java.lang.Thread.run(Thread.java:745)
Caused by: org.apache.jackrabbit.core.state.ItemStateException: there's already a property state instance with id f4ca4817-024d-4c6d-9482-23aa37e115f9/{}incoming
    at org.apache.jackrabbit.core.state.SessionItemStateManager.createTransientPropertyState(SessionItemStateManager.java:629)
    at org.apache.jackrabbit.core.PropertyImpl.restoreTransient(PropertyImpl.java:189)
    ... 15 more

18:14:25,424 ERROR [STDERR] org.drools.repository.RulesRepositoryException: Unable to checkin.
18:14:25,424 ERROR [STDERR]     at org.drools.repository.VersionableItem.checkin(VersionableItem.java:591)
18:14:25,424 ERROR [STDERR]     at org.drools.guvnor.server.jaxrs.PackageResource.updateAssetBinary(PackageResource.java:773)
...
18:14:25,427 ERROR [STDERR] Caused by: javax.jcr.InvalidItemStateException: Unable to update a stale item: item.save()
18:14:25,427 ERROR [STDERR]     at org.apache.jackrabbit.core.ItemSaveOperation.perform(ItemSaveOperation.java:262)
18:14:25,427 ERROR [STDERR]     at org.apache.jackrabbit.core.session.SessionState.perform(SessionState.java:200)
18:14:25,427 ERROR [STDERR]     at org.apache.jackrabbit.core.ItemImpl.perform(ItemImpl.java:91)
18:14:25,427 ERROR [STDERR]     at org.apache.jackrabbit.core.ItemImpl.save(ItemImpl.java:329)
18:14:25,427 ERROR [STDERR]     at org.apache.jackrabbit.core.session.SessionSaveOperation.perform(SessionSaveOperation.java:42)
18:14:25,427 ERROR [STDERR]     at org.apache.jackrabbit.core.session.SessionState.perform(SessionState.java:200)
18:14:25,428 ERROR [STDERR]     at org.apache.jackrabbit.core.SessionImpl.perform(SessionImpl.java:355)
18:14:25,428 ERROR [STDERR]     at org.apache.jackrabbit.core.SessionImpl.save(SessionImpl.java:758)
18:14:25,428 ERROR [STDERR]     at org.drools.repository.VersionableItem.checkin(VersionableItem.java:579)
18:14:25,428 ERROR [STDERR]     ... 51 more
18:14:25,428 ERROR [STDERR] Caused by: org.apache.jackrabbit.core.state.StaleItemStateException: 1547b59e-cc22-4fb5-ae0e-8ce1c15e8299/{http://www.jboss.org/drools-repository/1.0}binaryUpToDate has been modified externally
18:14:25,428 ERROR [STDERR]     at org.apache.jackrabbit.core.state.SharedItemStateManager$Update.begin(SharedItemStateManager.java:663)
18:14:25,428 ERROR [STDERR]     at org.apache.jackrabbit.core.state.SharedItemStateManager.beginUpdate(SharedItemStateManager.java:1458)
18:14:25,428 ERROR [STDERR]     at org.apache.jackrabbit.core.state.SharedItemStateManager.update(SharedItemStateManager.java:1488)
18:14:25,428 ERROR [STDERR]     at org.apache.jackrabbit.core.state.LocalItemStateManager.update(LocalItemStateManager.java:351)
18:14:25,428 ERROR [STDERR]     at org.apache.jackrabbit.core.state.XAItemStateManager.update(XAItemStateManager.java:354)
18:14:25,428 ERROR [STDERR]     at org.apache.jackrabbit.core.state.LocalItemStateManager.update(LocalItemStateManager.java:326)
18:14:25,428 ERROR [STDERR]     at org.apache.jackrabbit.core.state.SessionItemStateManager.update(SessionItemStateManager.java:289)
18:14:25,428 ERROR [STDERR]     at org.apache.jackrabbit.core.ItemSaveOperation.perform(ItemSaveOperation.java:258)
18:14:25,428 ERROR [STDERR]     ... 59 more