Scenario:
Server A starts up and adds a Map to the cache using this code
| ...
| private static TreeCacheAop treeCache;
| public static synchronized TreeCacheAop getClusterCache(){
| if(treeCache == null){
| try {
| treeCache = new TreeCacheAop();
| PropertyConfigurator config = new PropertyConfigurator(); //
configure tree cache.
| config.configure(treeCache, "replSync-service.xml");
| treeCache.startService();
| } catch (Exception e) {
| traceLog.fatal("Error while initializing JBoss cache", e);
| }
| }
| return treeCache;
| }
| ...
| if(Util.getClusterCache().exists("/aop/expresso/CacheManager/cacheLists")){
| cacheLists =
(FastHashMap)Util.getClusterCache().getObject("/aop/expresso/CacheManager/cacheLists");
| } else {
| Util.getClusterCache().putObject("/aop/expresso/CacheManager/cacheLists",
cacheLists);
| cacheLists =
(FastHashMap)Util.getClusterCache().getObject("/aop/expresso/CacheManager/cacheLists");
| }
| ...
|
When Server B starts up and executes the same code, this error appears on server A
console:
2004-09-12 22:01:22,809 ERROR [MessageDispatcher up processing thread]
cache.TreeCache$MessageListenerAdaptor (TreeCache.java:2919) - failed getting the
transient state
java.io.NotSerializableException: com.jcorporate.expresso.core.cache.UnOrderedCache
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1054)
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:278)
at java.util.HashMap.writeObject(HashMap.java:978)
...
and this error on server B console:
2004-09-12 22:01:23,260 ERROR [main] blocks.RpcDispatcher (RpcDispatcher.java:128) -
exception=java.io.NotSerializableException: UnOrderedCache
2004-09-12 22:01:24,182 ERROR [main] blocks.RpcDispatcher (RpcDispatcher.java:128) -
exception=java.io.NotSerializableException: UnOrderedCache
The class UnOrderedCache does not implement Serializable which as I understand is not
a requirement for TreeCacheAop. I do not have a jboss-aop.xml file because I'm using
-Djava.system.class.loader=org.jboss.aop.standalone.SystemClassLoader. UnOrderedCache
contains a few private members: couple strings, another HashMap, Logger reference etc.
The code is running under Tomcat 4.1.24 using JDK1.4.2 and jbosscache 1.1 with aop
1.0rc1
Any suggestions greatly appreciated!
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