One thing more ...

If you have problems to start jackrabbit you could add following in the workspace.xml
in the failing workspace.

<SearchIndex class="org.apache.jackrabbit.core.query.lucene.SearchIndex">
...
<param name="forceConsistencyCheck" value="true"/>
<param name="autoRepair" value="true"/>
<param name="onWorkspaceInconsistency" value="log"/>
...


see also
https://issues.apache.org/jira/browse/JCR-2651

greets
claus