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From Nilshan <nilshan.par...@indralok.com>
Subject Re: JackRabbit_Clustering
Date Tue, 31 Mar 2009 04:56:28 GMT

Hello Ian ,

Thanks for your quick reply... 

May be there is some problem with the Text Editor of this forum. because
some tags are not displayed by it.

I think It didn't consider param Tag.

For Cluster 1
<Cluster id="Rule Creation">	
  	    <Journal class="org.apache.jackrabbit.core.journal.FileJournal">
    		param name="revision" value="c:/myjournal/revision.log" /
    		param name="directory" value="c:/myjournal" /
  		</Journal>
</Cluster>

For Cluster 2
<Cluster id="Rule Execution.">
	
  	    <Journal class="org.apache.jackrabbit.core.journal.FileJournal">
    		param name="revision" value="c:/myjournal/revision_New.log" /
    		param name="directory" value="c:/myjournal" /
  		</Journal>
</Cluster>

I tried shared Journal (as it is must and clearly suggested on clustering
wiki) but it didn't work. 

I used DatabaseJournal, unfortunately It was giving me "Unable to create
Connection" error.  

Configuration using DatabaseJournal I used is as Below.

<Cluster id="Rule Creation">
	
  	    <Journal class="org.apache.jackrabbit.core.journal.DatabaseJournal">
    		param name="revision" value="${rep.home}/revision.log" /
    		param name="driver" value="com.ibm.db2.jcc.DB2Driver"/
	 		param name="url" value="jdbc:db2://192.168.1.36:50000/Database" /
			param name="user" value="username" /			
                                       param name="password"
value="password" /	 		                          param name="schema"
value="db2"/ 				
	 		param name="schemaObjectPrefix" value="RuleMgmt_Ver_" /  		</Journal>
</Cluster>

Please look at the above confiugration and let me know If I have made any
mistake.

The following is the Error log while using DatabaseJournal..

**********************************************************
javax.jcr.RepositoryException: Unable to create connection.: Unable to
create connection.
 at
org.apache.jackrabbit.core.RepositoryImpl.createClusterNode(RepositoryImpl.java:650)
 at
org.apache.jackrabbit.core.RepositoryImpl.<init>(RepositoryImpl.java:288)
 at
org.apache.jackrabbit.core.RepositoryImpl.create(RepositoryImpl.java:557)
 at
org.apache.jackrabbit.core.TransientRepository$2.getRepository(TransientRepository.java:245)
 at
org.apache.jackrabbit.core.TransientRepository.startRepository(TransientRepository.java:265)
 at
org.apache.jackrabbit.core.TransientRepository.login(TransientRepository.java:333)
 at
org.apache.jackrabbit.core.TransientRepository.login(TransientRepository.java:363)
 at
com.amicas.rulemanagement.RuleAssetManager.initializeRepository(RuleAssetManager.java:555)
 at
com.amicas.rulemanagement.RuleAssetManager.getSession(RuleAssetManager.java:517)
 at
com.amicas.rulemanagement.RuleAssetManager.getServiceImpl(RuleAssetManager.java:494)
 at
com.amicas.rulemanagement.RuleAssetManager.categoryExists(RuleAssetManager.java:420)
 at
com.amicas.rulemanagement.RuleAssetManager.initializeRuleRepoAndMetaConfiguration(RuleAssetManager.java:1718)
 at
com.amicas.rulemanagement.RuleAssetManager.getRuleAssetManager(RuleAssetManager.java:167)
 at
com.amicas.gwt.rulemanagement.servlet.RuleServiceServlet.getAllRuleByCategory(RuleServiceServlet.java:256)
 at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
 at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
 at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
 at java.lang.reflect.Method.invoke(Unknown Source)
 at com.google.gwt.user.server.rpc.RPC.invokeAndEncodeResponse(RPC.java:528)
 at
com.google.gwt.user.server.rpc.RemoteServiceServlet.processCall(RemoteServiceServlet.java:265)
 at
com.google.gwt.user.server.rpc.RemoteServiceServlet.doPost(RemoteServiceServlet.java:187)
 at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
 at javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
 at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
 at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
 at
org.springframework.orm.hibernate.support.OpenSessionInViewFilter.doFilterInternal(OpenSessionInViewFilter.java:172)
 at
org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)
**********************************************************

I found specific Database Journal for MySQl , Oracle. Do we have any Db2
specific Journal. ?


Thanks,
Nilshan and Arpan.

*******************************************************

Ian Boston-3 wrote:
> 
> A few observations:
> 
> You appear to be using the File Journal,
> but I cant see where the shared directory for the file journal is  
> defined.
> 
> I think, (please correct if wrong) it would be normal to use a DB  
> Journal if using a DB persistence manager.
> 
> Ian
> 
> On 30 Mar 2009, at 16:04, Nilshan wrote:
> 
>>
>> Hello All,
>>
>> I have implemented Jackrabbit Clustering approach to create Two  
>> clustering
>> for two different processes.
>> One for creation of rules (Cluster 1) and another for execution  
>> (Cluster 2).
>> Both these clusters have a shared database (DB2)
>> where rules are stored.
>>
>>
>> The problem I face during execution is that , the execution process  
>> does not
>> get the latest updates from Rule creation process. I mean , If I  
>> change Rule
>> status it doesn't reflect immediately to execution process.
>> But when redeployed (Restart Server) the system executes as  
>> expected. (With
>> latest changes applied by
>> Cluster 1)
>>
>> My configuration are as below.
>> 1.Shared DB ( Persistance Manager is ) : IBM DB2.
>> 2. Drools Version : 5.x
>> 3. Jackrabbit Version : 1.4.x
>>
>> My clustering configuration for both the process are as below.
>>
>> Configuration for Cluster 1 ----------- 
>> START-------------------------------
>> <?xml version="1.0" encoding="UTF-8"?>
>> <Repository>
>>
>> 	<Cluster id="Rule Creation">
>> 	
>>  	    <Journal class="org.apache.jackrabbit.core.journal.FileJournal">
>>    		
>>    		
>>  		</Journal>
>> 	</Cluster>
>>
>> 	<FileSystem  
>> class="org.apache.jackrabbit.core.fs.local.LocalFileSystem">
>>
>>    </FileSystem>
>>
>> 	<Security appName="Jackrabbit">
>> 		<AccessManager
>> class="org.apache.jackrabbit.core.security.SimpleAccessManager" />
>> 			<LoginModule
>> class="org.apache.jackrabbit.core.security.SimpleLoginModule">
>> 				
>> 			</LoginModule>
>> 	</Security>
>> 	
>> 	<Workspaces rootPath="${rep.home}/workspaces"  
>> defaultWorkspace="default" />	
>> 	<Workspace name="${wsp.name}">
>> 		<PersistenceManager
>> class 
>> ="org.apache.jackrabbit.core.state.db.SimpleDbPersistenceManager">
>> 			
>> 	 		
>> 			
>> 			
>> 	 		 				
>> 	 		
>> 			
>> 		</PersistenceManager>
>> 		
>> 		<FileSystem  
>> class="org.apache.jackrabbit.core.fs.local.LocalFileSystem">
>>
>>        </FileSystem>
>>
>>        <!--<FileSystem
>> class="org.apache.jackrabbit.core.fs.db.DB2FileSystem">
>>
>> 	 		
>> 			
>> 			
>> 	 		 				
>> 	 		
>>        </FileSystem>-->
>>
>> 		<SearchIndex  
>> class="org.apache.jackrabbit.core.query.lucene.SearchIndex">
>>
>>
>>
>>
>>    </SearchIndex>            	
>> 	</Workspace>
>> 	
>> 	<Versioning rootPath="${rep.home}/version">
>> 	
>> 		<PersistenceManager
>> class 
>> ="org.apache.jackrabbit.core.state.db.SimpleDbPersistenceManager">
>> 			
>> 	 		
>> 			
>> 			
>> 	 		 				
>> 	 		
>> 						
>> 		</PersistenceManager>
>> 		
>> 		<FileSystem  
>> class="org.apache.jackrabbit.core.fs.local.LocalFileSystem">
>>
>>        </FileSystem>
>>
>>        <!--<FileSystem
>> class="org.apache.jackrabbit.core.fs.db.DB2FileSystem">
>>
>> 	 		
>> 			
>> 			
>> 	 		 				
>> 	 		
>>        </FileSystem>-->
>>
>> 		
>> 	</Versioning>
>> 	<SearchIndex  
>> class="org.apache.jackrabbit.core.query.lucene.SearchIndex">
>>
>>
>>
>>
>>    </SearchIndex>
>>
>> </Repository>
>> Configuration for Cluster 1 ----------- 
>> END-------------------------------
>>
>> Configuration for Cluster 2 ----------- 
>> START-------------------------------
>> <?xml version="1.0" encoding="UTF-8"?>
>> <Repository>
>>
>> 	<Cluster id="Rule Execution">
>> 	
>>  	    <Journal class="org.apache.jackrabbit.core.journal.FileJournal">
>>    		
>>    		
>>  		</Journal>
>> 	</Cluster>
>>
>> 	<FileSystem  
>> class="org.apache.jackrabbit.core.fs.local.LocalFileSystem">
>>
>>    </FileSystem>
>>
>> 	<Security appName="Jackrabbit">
>> 		<AccessManager
>> class="org.apache.jackrabbit.core.security.SimpleAccessManager" />
>> 			<LoginModule
>> class="org.apache.jackrabbit.core.security.SimpleLoginModule">
>> 				
>> 			</LoginModule>
>> 	</Security>
>> 	
>> 	<Workspaces rootPath="${rep.home}/workspaces"  
>> defaultWorkspace="default" />	
>> 	<Workspace name="${wsp.name}">
>> 		<PersistenceManager
>> class 
>> ="org.apache.jackrabbit.core.state.db.SimpleDbPersistenceManager">
>> 			
>> 	 		
>> 			
>> 			
>> 	 		 				
>> 	 		
>> 			
>> 		</PersistenceManager>
>> 		
>> 		<FileSystem  
>> class="org.apache.jackrabbit.core.fs.local.LocalFileSystem">
>>
>>        </FileSystem>
>>
>>        <!--<FileSystem
>> class="org.apache.jackrabbit.core.fs.db.DB2FileSystem">
>>
>> 	 		
>> 			
>> 			
>> 	 		 				
>> 	 		
>>        </FileSystem>-->
>>
>> 		<SearchIndex  
>> class="org.apache.jackrabbit.core.query.lucene.SearchIndex">
>>
>>
>>
>>
>>    </SearchIndex>            	
>> 	</Workspace>
>> 	
>> 	<Versioning rootPath="${rep.home}/version">
>> 	
>> 		<PersistenceManager
>> class 
>> ="org.apache.jackrabbit.core.state.db.SimpleDbPersistenceManager">
>> 			
>> 	 		
>> 			
>> 			
>> 	 		 				
>> 	 		
>> 						
>> 		</PersistenceManager>
>> 		
>> 		<FileSystem  
>> class="org.apache.jackrabbit.core.fs.local.LocalFileSystem">
>>
>>        </FileSystem>
>>
>>        <!--<FileSystem
>> class="org.apache.jackrabbit.core.fs.db.DB2FileSystem">
>>
>> 	 		
>> 			
>> 			
>> 	 		 				
>> 	 		
>>        </FileSystem>-->
>>
>> 		
>> 	</Versioning>
>> 	<SearchIndex  
>> class="org.apache.jackrabbit.core.query.lucene.SearchIndex">
>>
>>
>>
>>
>>    </SearchIndex>
>>
>> </Repository>
>> Configuration for  Cluster 2 ----------- 
>> END-------------------------------
>>
>> Both the process are running on same machine under different JVM.
>>
>> Do we have any specific Journal for DB2 database as we have one for  
>> Oracle.?
>>
>> Please suggest me  a feasible solution for the above problem.
>>
>> Your Help for this would highly appreciated.
>>
>> Thanks in advance.
>>
>> Nilshan and Arpan.
>>
>>
>> -- 
>> View this message in context:
>> http://www.nabble.com/JackRabbit_Clustering-tp22785285p22785285.html
>> Sent from the Jackrabbit - Users mailing list archive at Nabble.com.
>>
> 
> 
> 
http://www.nabble.com/file/p22798352/Cluster_1.xml Cluster_1.xml 
http://www.nabble.com/file/p22798352/Cluster_1.xml Cluster_1.xml 
-- 
View this message in context: http://www.nabble.com/JackRabbit_Clustering-tp22785285p22798352.html
Sent from the Jackrabbit - Users mailing list archive at Nabble.com.


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