[JCR-4197] Error running Apache Jackrabbit GarbageCollector

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Cannot Reproduce
• Affects Version/s: 2.6.4
• Component/s: core, jackrabbit-core
• Flags: Important
• Assignee: Unassigned
• Reporter: Prerak Tiwari
• Created: 09/Oct/17 14:42
• Updated: 28/Aug/20 10:51
• Resolved: 04/May/20 13:47

Description

I am trying to run a GarbageCollector on my DataStore using the method given in this link : https://wiki.apache.org/jackrabbit/DataStore

public void runGC(){
        LOG.info("Inside runGC() method :: START ");

        DataStoreGarbageCollector gc = null;
        RepositoryManager rm = null;
        try {
            // need to login to start the repository
            rm = DMSRepositoryFactory.instance.getRepositoryFactory().getRepositoryManager((JackrabbitRepository)DMSRepositoryFactory.instance.getRepository());
            session = DMSRepositoryFactory.instance.getRepository().login();
            LOG.info("Inside runGC() method :: before starting Garbage Collector()");

            gc = rm.createDataStoreGarbageCollector();
            gc.mark();
            gc.sweep();
            LOG.info("Inside runGC() method :: after executing Garbage Collector()");
        } catch (RepositoryException e) {
            LOG.error("Error While Runining GC", e); 
            e.printStackTrace();
        }finally {
            LOG.info("Inside runGC() method :: inside finally closing Garbage Collector()");
            gc.close();
        }

        session.logout();
        rm.stop();
    }

2017-10-09 09:01:16,844 INFO [SplitDesign] Inside runGC() method :: START
2017-10-09 09:07:07,785 INFO [SplitDesign] Inside runGC() method :: before starting Garbage Collector()
2017-10-09 09:07:13,807 ERROR [SplitDesign] Error While Runining GC
javax.jcr.RepositoryException: mark failed to access a property
at org.apache.jackrabbit.core.data.GarbageCollector.checkLengths(GarbageCollector.java:341)
at org.apache.jackrabbit.core.data.GarbageCollector.recurse(GarbageCollector.java:282)
at org.apache.jackrabbit.core.data.GarbageCollector.recurse(GarbageCollector.java:294)
at org.apache.jackrabbit.core.data.GarbageCollector.recurse(GarbageCollector.java:294)
at org.apache.jackrabbit.core.data.GarbageCollector.recurse(GarbageCollector.java:294)
at org.apache.jackrabbit.core.data.GarbageCollector.recurse(GarbageCollector.java:294)
at org.apache.jackrabbit.core.data.GarbageCollector.recurse(GarbageCollector.java:294)
at org.apache.jackrabbit.core.data.GarbageCollector.scanNodes(GarbageCollector.java:181)
at org.apache.jackrabbit.core.data.GarbageCollector.mark(GarbageCollector.java:162)
at gov.ms.mdes.access.framework.dms.migration.SplitSsnDesign.runGC(SplitSsnDesign.java:1653)
at gov.ms.mdes.access.framework.dms.migration.Migration.runGC(Migration.java:156)
at gov.ms.mdes.access.framework.dms.jackrabbit.server.DmsRepository.runGC(DmsRepository.java:493)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:357)
at sun.rmi.transport.Transport$1.run(Transport.java:200)
at sun.rmi.transport.Transport$1.run(Transport.java:197)
at java.security.AccessController.doPrivileged(Native Method)
at sun.rmi.transport.Transport.serviceCall(Transport.java:196)
at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:568)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTransport.java:826)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.lambda$run$0(TCPTransport.java:683)
at java.security.AccessController.doPrivileged(Native Method)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:682)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
2017-10-09 09:07:15,696 INFO [SplitDesign] Inside runGC() method :: inside finally closing Garbage Collector()