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From Rogue <rogu...@gmail.com>
Subject Help with "Failed to resolve name of ..." in cluster configuration
Date Wed, 11 Feb 2009 07:48:58 GMT
Hi All,

I have spent the last week going through the setup of our cluster  
configuration, and I think I might have an issue with its  
configuration and need your help in rectifying it.

Ok here is a little bit of history... The system has been running  
absolutely fine for quite some time and we have been seeing issues  
only lately. The current configuration is:

1. Two servers - each running JBoss 4.2.2
2. Jackrabbit JCA has been deployed on each node. The applications  
access JCR via JNDI / RMI lookups
3. Each instance has its own home directory, but the workspace content  
is on a shared NAS.
4. The repository uses a hybrid of FileStore and DBStore (information  
available in the files)

Now, for some time I keep having occasional issues of content being  
available from one node and not being available from another node. I  
keep seeing exceptions like:

Caused by: javax.jcr.RepositoryException: failed to resolve name of  
47901c42-8187-497f-bbd2-10e61e65966a
         at  
org 
.apache 
.jackrabbit 
.rmi.server.ServerObject.getRepositoryException(ServerObject.java:136)
         at  
org.apache.jackrabbit.rmi.server.ServerItem.getName(ServerItem.java:71)
         at sun.reflect.GeneratedMethodAccessor466.invoke(Unknown  
Source)
         at  
sun 
.reflect 
.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java: 
25)
         at java.lang.reflect.Method.invoke(Method.java:585)
         at  
sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:294)
         at sun.rmi.transport.Transport$1.run(Transport.java:153)
         at java.security.AccessController.doPrivileged(Native Method)
         at sun.rmi.transport.Transport.serviceCall(Transport.java:149)
         at  
sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:466)
         at sun.rmi.transport.tcp.TCPTransport 
$ConnectionHandler.run(TCPTransport.java:707)
         at java.lang.Thread.run(Thread.java:595)
         at  
sun 
.rmi 
.transport 
.StreamRemoteCall.exceptionReceivedFromServer(StreamRemoteCall.java:247)
         at  
sun.rmi.transport.StreamRemoteCall.executeCall(StreamRemoteCall.java: 
223)
         at sun.rmi.server.UnicastRef.invoke(UnicastRef.java:126)
         at  
org.apache.jackrabbit.rmi.server.ServerNode_Stub.getName(Unknown Source)
         at  
org.apache.jackrabbit.rmi.client.ClientItem.getName(ClientItem.java:85)


 From all the reading that I have been doing, I am guessing this is a  
case of broken search indexes (please correct me if I am wrong). If  
that is the case, then how do I go about cleaning up this mess? I  
guess I am extreme novice and am not sure about the guy who set this  
up in the first place, but any help on this front would be greatly  
appreciated.

Thanks,
Rogue

p.s.: Sorry for the HTML mail.
--------------------------

My repository.xml file

<?xml version="1.0"?>
<!DOCTYPE Repository PUBLIC "-//The Apache Software Foundation//DTD  
Jackrabbit 1.2//EN"
                             "http://jackrabbit.apache.org/dtd/repository-1.2.dtd 
">
<Repository>
     <FileSystem  
class="org.apache.jackrabbit.core.fs.local.LocalFileSystem">
         <param name="path" value="/apps/jboss/jcr_repositories/ 
ugc_repository/shared/content"/>
     </FileSystem>

     <Security appName="Jackrabbit">
         <AccessManager  
class="org.apache.jackrabbit.core.security.SimpleAccessManager" />
         <LoginModule  
class="org.apache.jackrabbit.core.security.SimpleLoginModule">
             <param name="anonymousId" value="anonymous"/>
         </LoginModule>
     </Security>

     <Workspaces rootPath="/apps/jboss/jcr_repositories/ugc_repository/ 
shared/content/" defaultWorkspace="default"/>
     <Workspace name="default">
         <FileSystem  
class="org.apache.jackrabbit.core.fs.local.LocalFileSystem">
             <param name="path" value="${wsp.home}"/>
         </FileSystem>
         <PersistenceManager    
class 
= 
"org 
.apache.jackrabbit.core.persistence.bundle.OraclePersistenceManager">
             <param name="driver" value="oracle.jdbc.OracleDriver"/>
             <param name="url" value="db-connect-details"/>
             <param name="user" value="db-username"/>
             <param name="password" value="db-password"/>
             <param name="schema" value="oracle"/>
             <param name="schemaObjectPrefix" value="J_PM_DEFAULT_"/>
             <param name="externalBLOBs" value="true"/>
             <param name="blobFSBlockSize" value="0"/>
             <param name="minBlobSize" value="0"/>
         </PersistenceManager>
     </Workspace>

     <Versioning rootPath="${rep.home}/version">
         <FileSystem  
class="org.apache.jackrabbit.core.fs.local.LocalFileSystem">
             <param name="path" value="${rep.home}/version" />
         </FileSystem>
         <PersistenceManager    
class 
= 
"org 
.apache.jackrabbit.core.persistence.bundle.OraclePersistenceManager">
             <param name="driver" value="oracle.jdbc.OracleDriver"/>
             <param name="url" value="db-connect-details"/>
             <param name="user" value="db-username"/>
             <param name="password" value="db-password"/>
             <param name="schema" value="oracle"/>
             <param name="schemaObjectPrefix" value="J_V_PM_"/>
             <param name="externalBLOBs" value="true"/>
             <param name="blobFSBlockSize" value="0"/>
             <param name="minBlobSize" value="0"/>
         </PersistenceManager>
     </Versioning>

     <Cluster id="node1">
         <Journal  
class="org.apache.jackrabbit.core.journal.OracleDatabaseJournal">
             <param name="revision" value="${rep.home}/revision.log" />
             <param name="driver" value="oracle.jdbc.OracleDriver" />
             <param name="url" value="db-connect-details" />
             <param name="user" value="db-username" />
             <param name="password" value="db-password" />
         </Journal>
     </Cluster>
</Repository>



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