Details
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Bug
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Resolution: Unresolved
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Major
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None
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18.4.1
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None
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Windows 11 Pro, Chrome 149, using an instance of XWiki 18.4.1 on Jetty/ HSQL
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Unknown
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Description
Steps to reproduce
- Create an older instance of XWiki with Distribution Wizard (e.g. reproduced with 12.10.11 on Jetty/HSQL)
- Create a subwiki on this instance
- Close the instance
- Copy/move the data folder from the older instance into an 18.4.1 instance (reproduced (replace the folder if it exists)
- Start the new XWiki instance
- Follow the Distribution Wizard to upgrade the Main Wiki
- Observe the logs
Expected results
No errors/ warnings are displayed.
Actual results
During the upgrade of the Main Wiki with DW, the following warnings are displayed in XWiki logs:
2026-06-18 16:58:41,656 [XWiki Reload Schedulers after classloader reload for namespace [null]] WARN c.x.x.d.XWikiDocument - Abusive modification of the cached document [subwikiglobal:Scheduler.NotificationEmailWeeklySender()] java.lang.IllegalStateException: Abusive modification of the cached document at com.xpn.xwiki.doc.XWikiDocument.warnWithStackTrace(XWikiDocument.java:9416) at com.xpn.xwiki.doc.XWikiDocument.setMetaDataDirty(XWikiDocument.java:2459) at com.xpn.xwiki.objects.BaseElement.setDirty(BaseElement.java:134) at com.xpn.xwiki.objects.BaseProperty.setDirty(BaseProperty.java:448) at com.xpn.xwiki.objects.BaseProperty.setValueDirty(BaseProperty.java:442) at com.xpn.xwiki.objects.BaseStringProperty.setValue(BaseStringProperty.java:77) at com.xpn.xwiki.objects.BaseCollection.setStringValue(BaseCollection.java:338) at com.xpn.xwiki.plugin.scheduler.SchedulerPlugin.prepareJobStubContext(SchedulerPlugin.java:262) at com.xpn.xwiki.plugin.scheduler.SchedulerPlugin.buildJobDetails(SchedulerPlugin.java:457) at com.xpn.xwiki.plugin.scheduler.SchedulerPlugin.reloadJob(SchedulerPlugin.java:653) at com.xpn.xwiki.plugin.scheduler.internal.SchedulersClassLoaderManager.reloadScheduler(SchedulersClassLoaderManager.java:152) at com.xpn.xwiki.plugin.scheduler.internal.SchedulersClassLoaderManager.lambda$onClassLoaderReset$1(SchedulersClassLoaderManager.java:137) at org.xwiki.context.concurrent.ExecutionContextRunnable.run(ExecutionContextRunnable.java:71) at java.base/java.lang.VirtualThread.run(VirtualThread.java:456) 2026-06-18 16:58:41,689 [XWiki Reload Schedulers after classloader reload for namespace [null]] WARN c.x.x.d.XWikiDocument - Abusive modification of the cached document [subwikiglobal:Scheduler.NotificationEmailHourlySender()] java.lang.IllegalStateException: Abusive modification of the cached document at com.xpn.xwiki.doc.XWikiDocument.warnWithStackTrace(XWikiDocument.java:9416) at com.xpn.xwiki.doc.XWikiDocument.setMetaDataDirty(XWikiDocument.java:2459) at com.xpn.xwiki.objects.BaseElement.setDirty(BaseElement.java:134) at com.xpn.xwiki.objects.BaseProperty.setDirty(BaseProperty.java:448) at com.xpn.xwiki.objects.BaseProperty.setValueDirty(BaseProperty.java:442) at com.xpn.xwiki.objects.BaseStringProperty.setValue(BaseStringProperty.java:77) at com.xpn.xwiki.objects.BaseCollection.setStringValue(BaseCollection.java:338) at com.xpn.xwiki.plugin.scheduler.SchedulerPlugin.prepareJobStubContext(SchedulerPlugin.java:262) at com.xpn.xwiki.plugin.scheduler.SchedulerPlugin.buildJobDetails(SchedulerPlugin.java:457) at com.xpn.xwiki.plugin.scheduler.SchedulerPlugin.reloadJob(SchedulerPlugin.java:653) at com.xpn.xwiki.plugin.scheduler.internal.SchedulersClassLoaderManager.reloadScheduler(SchedulersClassLoaderManager.java:152) at com.xpn.xwiki.plugin.scheduler.internal.SchedulersClassLoaderManager.lambda$onClassLoaderReset$1(SchedulersClassLoaderManager.java:137) at org.xwiki.context.concurrent.ExecutionContextRunnable.run(ExecutionContextRunnable.java:71) at java.base/java.lang.VirtualThread.run(VirtualThread.java:456) 2026-06-18 16:58:41,704 [XWiki Reload Schedulers after classloader reload for namespace [null]] WARN c.x.x.d.XWikiDocument - Abusive modification of the cached document [subwikiglobal:Scheduler.NotificationEmailDailySender()] java.lang.IllegalStateException: Abusive modification of the cached document at com.xpn.xwiki.doc.XWikiDocument.warnWithStackTrace(XWikiDocument.java:9416) at com.xpn.xwiki.doc.XWikiDocument.setMetaDataDirty(XWikiDocument.java:2459) at com.xpn.xwiki.objects.BaseElement.setDirty(BaseElement.java:134) at com.xpn.xwiki.objects.BaseProperty.setDirty(BaseProperty.java:448) at com.xpn.xwiki.objects.BaseProperty.setValueDirty(BaseProperty.java:442) at com.xpn.xwiki.objects.BaseStringProperty.setValue(BaseStringProperty.java:77) at com.xpn.xwiki.objects.BaseCollection.setStringValue(BaseCollection.java:338) at com.xpn.xwiki.plugin.scheduler.SchedulerPlugin.prepareJobStubContext(SchedulerPlugin.java:262) at com.xpn.xwiki.plugin.scheduler.SchedulerPlugin.buildJobDetails(SchedulerPlugin.java:457) at com.xpn.xwiki.plugin.scheduler.SchedulerPlugin.reloadJob(SchedulerPlugin.java:653) at com.xpn.xwiki.plugin.scheduler.internal.SchedulersClassLoaderManager.reloadScheduler(SchedulersClassLoaderManager.java:152) at com.xpn.xwiki.plugin.scheduler.internal.SchedulersClassLoaderManager.lambda$onClassLoaderReset$1(SchedulersClassLoaderManager.java:137) at org.xwiki.context.concurrent.ExecutionContextRunnable.run(ExecutionContextRunnable.java:71) at java.base/java.lang.VirtualThread.run(VirtualThread.java:456)
I've tried several times to reproduce the issue with 18.4.0 and 17.10.9 (by upgrading from the same instance of 12.10.11), but it seems I couldn't.