[rules-users] Exception when executing drools-wb-jcr2vfs-migration

[nelson.wan]

We defined a lot of rules using Drools 5.5.0. 

Since Drools 6 has been released, we used "drools-wb-jcr2vfs-migration"
script to migrate the repository from 5.5.0 to 6.

The script generated exception during execution. 
It said modules migrated. But when migrating categories, it fails.
Hope to seek advice. Below is the output with errors:

D:\Austin\drools-wb-jcr2vfs-migration-core-6.0.0.Final\bin>runMigration.bat

Migration started. Reading from inputJcrRepository
({D:\Austin\drools-wb-jcr2vfs-migration-core-6.0.0.Final\bin\inputJcr}).
  Module migration started
=============== session-guest-4
    Module [ForrestGumpSample] migrated.
    Module [com.austin.callmethod] migrated.
    Module [com.austin.complex] migrated.
    Module [com.austin.scorecard] migrated.
    Module [com.austin.test] migrated.
    Module [com.austin.testRep] migrated.
    Module [com.austin.workitem] migrated.
    Module [com.boc.demo] migrated.
    Module [com.boc.riskmgmt.drools.florence] migrated.
    Module [com.boc.riskmgmt.drools.florence2] migrated.
    Module [com.boc.riskmgmt.nelson] migrated.
    Module [com.declarative.test] migrated.
    Module [com.demo.strata] migrated.
    Module [com.philip] migrated.
    Module [defaultPackage] migrated.
=============== session-guest-4
    Global migrated.
  Module migration ended
  Category migration started
=============== session-guest-4
=============== session-guest-4
=============== session-guest-4
=============== session-guest-4
=============== session-guest-4
org.drools.repository.RulesRepositoryException: Unable to load the category
: [M_Model] does not exist.
        at
org.drools.repository.RulesRepository.loadCategory(RulesRepository.java:1098)
        at
org.drools.repository.RulesRepository$Proxy$_$$_WeldClientProxy.loadCategory(RulesRepository$Proxy$_$$_WeldClientProxy.java)
        at
org.drools.guvnor.server.RepositoryCategoryOperations.loadChildCategories(RepositoryCategoryOperations.java:64)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
        at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:597)
        at
org.jboss.weld.bean.proxy.AbstractBeanInstance.invoke(AbstractBeanInstance.java:45)
        at
org.jboss.weld.bean.proxy.ProxyMethodHandler.invoke(ProxyMethodHandler.java:105)
        at
org.drools.guvnor.server.RepositoryCategoryOperations$Proxy$_$$_WeldClientProxy.loadChildCategories(RepositoryCategoryOperations$Proxy$_$$_WeldClientProxy.java)
        at
org.drools.guvnor.server.RepositoryCategoryService.loadChildCategories(RepositoryCategoryService.java:54)
        at
org.drools.guvnor.server.RepositoryCategoryService$Proxy$_$$_WeldClientProxy.loadChildCategories(RepositoryCategoryService$Proxy$_$$_WeldClientProxy.java)
        at
org.drools.workbench.jcr2vfsmigration.migrater.CategoryMigrater.loadChildCategories(CategoryMigrater.java:42)
        at
org.drools.workbench.jcr2vfsmigration.migrater.CategoryMigrater.loadChildCategories(CategoryMigrater.java:49)
        at
org.drools.workbench.jcr2vfsmigration.migrater.CategoryMigrater.loadChildCategories(CategoryMigrater.java:49)
        at
org.drools.workbench.jcr2vfsmigration.migrater.CategoryMigrater.migrateAll(CategoryMigrater.java:34)
        at
org.drools.workbench.jcr2vfsmigration.migrater.CategoryMigrater$Proxy$_$$_WeldClientProxy.migrateAll(CategoryMigrater$Proxy$_$$_WeldClientProxy.java)

        at
org.drools.workbench.jcr2vfsmigration.Jcr2VfsMigrater.migrateAll(Jcr2VfsMigrater.java:90)
        at
org.drools.workbench.jcr2vfsmigration.Jcr2VfsMigrater$Proxy$_$$_WeldClientProxy.migrateAll(Jcr2VfsMigrater$Proxy$_$$_WeldClientProxy.java)
        at
org.drools.workbench.jcr2vfsmigration.Jcr2VfsMigrationApp.migrate(Jcr2VfsMigrationApp.java:64)
        at
org.drools.workbench.jcr2vfsmigration.Jcr2VfsMigrationApp.run(Jcr2VfsMigrationApp.java:52)
        at
org.drools.workbench.jcr2vfsmigration.Jcr2VfsMigrationApp.main(Jcr2VfsMigrationApp.java:37)
Caused by: javax.jcr.PathNotFoundException: M_Model
        at org.apache.jackrabbit.core.NodeImpl$8.perform(NodeImpl.java:2135)
        at org.apache.jackrabbit.core.NodeImpl$8.perform(NodeImpl.java:2129)
        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.NodeImpl.getNode(NodeImpl.java:2129)
        at
org.drools.repository.RulesRepository.loadCategory(RulesRepository.java:1088)
        ... 21 more
Migration ended with errors. Written into outputVfsRepository
({D:\Austin\drools-wb-jcr2vfs-migration-core-6.0.0.Final\bin\outputVfs}).




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