Background

There is a project that runs on Jackrabbit 2.x. Due to concurrency issues even with explicit locking (and some others), it has been decided to migrate to ModeShape 5.x. So far, almost everything looks great and the problems we experienced with Jackrabbit before no longer happen with ModeShape, based on initial testing. However, there are some test cases that fail due to unexpected exception from ModeShape when working with the version history for a given frozen node. It is possible that the JCR API is misued in the project I am working on, but that specific functionality used to work when Jackrabbit was the implementation of the JCR 2.0.

Problem

Basically, what happens is that javax.jcr.PathNotFoundException gets thrown on a call like this:

VersionHistory versionHistory = (VersionHistory) child.getProperty("jcr:childVersionHistory").getNode();

The stack trace looks like this:

javax.jcr.ItemNotFoundException: No node exists at path 'dbb11dd317f1e7587ac6a4-441a-4cdb-a4b9-32bfe41cf9a9' in workspace "default"
	at org.modeshape.jcr.AbstractJcrProperty.valueToNode(AbstractJcrProperty.java:397)
	at org.modeshape.jcr.JcrSingleValueProperty.getNode(JcrSingleValueProperty.java:122)
	
  ...
  
Caused by: javax.jcr.PathNotFoundException: No node exists at path 'dbb11dd317f1e7587ac6a4-441a-4cdb-a4b9-32bfe41cf9a9' in workspace "default"
	at org.modeshape.jcr.JcrSession.cachedNode(JcrSession.java:617)
	at org.modeshape.jcr.JcrSession.node(JcrSession.java:649)
	at org.modeshape.jcr.AbstractJcrProperty.valueToNode(AbstractJcrProperty.java:391)
	... 29 more

Test Case

The aforementioned problem can be consistently re-created using the attached test project (see modeshape-version-test.zip). To run a project, unpack it and execute the following command:

mvn clean verify

Here are the versions of OS, Maven and Java in use:

Apache Maven 3.3.3 (7994120775791599e205a5524ec3e0dfe41d4a06; 2015-04-22T06:57:37-05:00)
Java version: 1.8.0_60, vendor: Oracle Corporation
OS name: "mac os x", version: "10.10.4", arch: "x86_64", family: "mac"

Questions

Could someone take a look at the attached test project and provide feedback as to whether the behavior I see is expected? If ModeShape behaves according to the design, would you be able to point to a place in the test project where the JCR API is misused (and if so, give a hint on how to use it properly)? Thanks a lot.