This came back in the Essentials (2.8) .log file for a File-Share to Sharepoint 2019 OnPrem migration which simply got stuck until killed.

I cannot find any documentation for what it means

!MESSAGE An error occurred while automatically activating bundle org.eclipse.core.resources (193).


org.osgi.framework.BundleException: Exception in org.eclipse.core.resources.ResourcesPlugin.start() of bundle org.eclipse.core.resources.

Caused by: java.lang.StackOverflowError

                at org.eclipse.core.internal.dtree.DeltaDataTree.reroot(

(repeats over 7,000 times).

 The source  folder that was to be migrated  contains just 78 files in 8 sub-folders. Total file size was 27,336,758 bytes.

The permissions seem Ok.

So, there is nothing remarkable about the number of files or the size.

Has anyone seen this before?

Does this point to:

  • A content problem.?
  • Run-time environment on the machine running Essentials?
  • Problem at (on-prem) SharePoint 2019 server?