The setup looks Ok, the key things are
1: revision is a local file that stores the revision that the current
node is at, I have a feeling that this is a binary integer so you can
use od (octal dump) to look at it and see where a app server node is at.
2. In the DB journal the table is shared, in the File Journal the
location is shared and this is the communication mechanism between app
server nodes within the cluster.
In the log files you should see ClusterNode revisions flowing past
when each item is saved (or session.save() which does a
session.getRootNode().save()).
You should also see those ClusterNode revisions being replayed on
other nodes. ( are you doing item.save(), session.save() etc.... dumb
question)
Things that you might try:
FileJournal
monitor the journal file on both nodes with tail (but be prepared to
see junk and a broken terminal), you should see it being appended to
on both nodes.
DBJournal
do a select count(*) from the journal table on both nodes to see that
records are being appended on each node.
Also for the DB journal you could turn on sql logging or use the
log4jdbc driver to log statements.
HTH
Ian
On 31 Mar 2009, at 05:56, Nilshan wrote:
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.
