org.apache.ignite.igniteCheckedException：无法从文件中读取类名

Question

我有一个3节点的Apache Ignite集群，我创建了一个以整数为键的缓存，以'subscriber'POJO为值，当我从JAVA程序内部连接到集群并访问缓存时，我得到了上面提到的异常，我有'peerClassLoading'属性设置为false，并且我在所有节点中部署了'subscriber'POJO二进制文件，请在下面找到完整的堆栈跟踪。我错过了什么？当我在JAVA程序中用ignition.start()启动客户端时，它为什么要在我的IGNITE_HOME中查找某个文件？

class org.apache.ignite.IgniteCheckedException: Failed to read class name from file [id=-1219769240, file=/home/benakaraj/Downloads/apache-ignite-fabric-1.5.0.final-bin/work/marshaller/-1219769240.classname]
at org.apache.ignite.internal.MarshallerContextImpl.className(MarshallerContextImpl.java:158)
at org.apache.ignite.internal.MarshallerContextAdapter.getClass(MarshallerContextAdapter.java:174)
at org.apache.ignite.internal.binary.BinaryContext.descriptorForTypeId(BinaryContext.java:483)
at org.apache.ignite.internal.binary.BinaryReaderExImpl.deserialize(BinaryReaderExImpl.java:1443)
at org.apache.ignite.internal.binary.BinaryObjectImpl.deserializeValue(BinaryObjectImpl.java:537)
at org.apache.ignite.internal.binary.BinaryObjectImpl.value(BinaryObjectImpl.java:117)
at org.apache.ignite.internal.processors.cache.CacheObjectContext.unwrapBinary(CacheObjectContext.java:280)
at org.apache.ignite.internal.processors.cache.CacheObjectContext.unwrapBinaryIfNeeded(CacheObjectContext.java:145)
at org.apache.ignite.internal.processors.cache.CacheObjectContext.unwrapBinaryIfNeeded(CacheObjectContext.java:132)
at org.apache.ignite.internal.processors.cache.GridCacheContext.unwrapBinaryIfNeeded(GridCacheContext.java:1748)
at org.apache.ignite.internal.processors.cache.distributed.dht.GridPartitionedSingleGetFuture.setResult(GridPartitionedSingleGetFuture.java:598)
at org.apache.ignite.internal.processors.cache.distributed.dht.GridPartitionedSingleGetFuture.onResult(GridPartitionedSingleGetFuture.java:454)
at org.apache.ignite.internal.processors.cache.distributed.dht.GridDhtCacheAdapter.processNearSingleGetResponse(GridDhtCacheAdapter.java:153)
at org.apache.ignite.internal.processors.cache.distributed.dht.atomic.GridDhtAtomicCache.access$1200(GridDhtAtomicCache.java:128)
at org.apache.ignite.internal.processors.cache.distributed.dht.atomic.GridDhtAtomicCache$11.apply(GridDhtAtomicCache.java:295)
at org.apache.ignite.internal.processors.cache.distributed.dht.atomic.GridDhtAtomicCache$11.apply(GridDhtAtomicCache.java:293)
at org.apache.ignite.internal.processors.cache.GridCacheIoManager.processMessage(GridCacheIoManager.java:582)
at org.apache.ignite.internal.processors.cache.GridCacheIoManager.onMessage0(GridCacheIoManager.java:280)
at org.apache.ignite.internal.processors.cache.GridCacheIoManager.handleMessage(GridCacheIoManager.java:204)
at org.apache.ignite.internal.processors.cache.GridCacheIoManager.access$000(GridCacheIoManager.java:80)
at org.apache.ignite.internal.processors.cache.GridCacheIoManager$1.onMessage(GridCacheIoManager.java:163)
at org.apache.ignite.internal.managers.communication.GridIoManager.processRegularMessage0(GridIoManager.java:821)
at org.apache.ignite.internal.managers.communication.GridIoManager.access$1600(GridIoManager.java:103)
at org.apache.ignite.internal.managers.communication.GridIoManager$5.run(GridIoManager.java:784)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.io.FileNotFoundException: /home/benakaraj/Downloads/apache-ignite-fabric-1.5.0.final-bin/work/marshaller/-1219769240.classname (No such file or directory)
at java.io.FileInputStream.open(Native Method)
at java.io.FileInputStream.<init>(FileInputStream.java:138)
at java.io.FileReader.<init>(FileReader.java:72)
at org.apache.ignite.internal.MarshallerContextImpl.className(MarshallerContextImpl.java:154)
... 26 more

Answer 1

看起来缓存试图在从缓存检索值后反序列化该值，但在调用igniteCache.get()的节点上没有该值的类。您可以部署该类，也可以使用igniteCache.WithKeepBinary()来避免反序列化：https://apacheignite.readme.io/docs/binary-marshaller#binaryobject-cache-api