Question

我有一个远程服务器节点，从本地客户端节点我发现该服务器节点。现在从客户端节点我想创建缓存附： peerClassLoading已启用两种配置我的代码正在关注

   private final CacheConfiguration<> cacheConfiguration = SpringContextHolder.applicationContext 
                            .getBean("cacheConfiguration", CacheConfiguration.class); 

    ignite.createCache((CacheConfiguration<>)new CacheConfiguration<>(cacheConfiguration).setName(CACHE_NAME) 
                                                    .setReadThrough(true) 
                                                    .setCacheLoaderFactory(new LoaderFactory()) 
                                                    .setExpiryPolicyFactory(EternalExpiryPolicy.factoryOf()))) 



    public  class LoaderFactory
                    implements Factory<Loader> { 


            public Loader create() { 
                    return new Loader(); 
            } 

    } 




    public class Loader implements CacheLoader<x,y> { 



        public Loader(){
        } 

    .................................... 
    } 


        during  creating cache ,on remote node brings exception 

        class org.apache.ignite.IgniteCheckedException: Failed to find class with given class loader for unmarshalling (make sure same versions of all classes are available on all nodes or enable peer-class-loading): java.net.URLClassLoader@738defde       at org.apache.ignite.marshaller.jdk.JdkMarshaller.unmarshal(JdkMarshaller.java:108) 
                at org.apache.ignite.spi.discovery.tcp.messages.TcpDiscoveryCustomEventMessage.message(TcpDiscoveryCustomEventMessage.java:80) 
                at org.apache.ignite.spi.discovery.tcp.ServerImpl$RingMessageWorker.notifyDiscoveryListener(ServerImpl.java:4894)       at org.apache.ignite.spi.discovery.tcp.ServerImpl$RingMessageWorker.processCustomMessage(ServerImpl.java:4750) 
                at org.apache.ignite.spi.discovery.tcp.ServerImpl$RingMessageWorker.processMessage(ServerImpl.java:2121) 
                at org.apache.ignite.spi.discovery.tcp.ServerImpl$RingMessageWorker.body(ServerImpl.java:2208)07) 
                at org.apache.ignite.spi.IgniteSpiThread.run(IgniteSpiThread.java:62) 
        Caused by: java.lang.ClassNotFoundException: com.synisys.idm.apollo.internal.service.caching.loaders.LoaderFactory      at java.net.URLClassLoader$1.run(URLClassLoader.java:366) 
                at java.security.AccessController.doPrivileged(Native Method) 
                at java.lang.ClassLoader.loadClass(ClassLoader.java:425):354) 
                at java.lang.Class.forName0(Native Method)ader.java:358) 
                at org.apache.ignite.internal.util.IgniteUtils.forName(IgniteUtils.java:8250) 
                at org.apache.ignite.marshaller.jdk.JdkMarshallerObjectInputStream.resolveClass(JdkMarshallerObjectInputStream.java:54)

如何解决这个问题？

Answer 1

Denis Magda回答@magda 您好，

您还必须将加载程序工厂的类放在客户端的节点类路径中。这样做的主要原因是，当从客户端节点启动事务时（通常情况下），客户端首先将数据提交到存储，然后再提交到内存中。

此博客文章中讨论了存储的案例：http://gridgain.blogspot.ru/2014/09/two-phase-commit-for-in-memory-caches.html

- 丹尼斯·马格达

在客户机节点上使用CacheLoaderFactory创建缓存会带来异常

1 个答案: