我有2台Ignite服务器，当我创建一个点火客户端时， 它将连接到两个服务器，它可以正常工作，没有错误。
在ignite客户端java代码中，它创建了一个集群单例服务
但是如果我使用相同的代码创建第二个点燃客户端，那么 客户端也将调用该函数来创建集群单例服务（我认为点燃可能知道这个服务已经有了，并且不会再次创建，如果我错了就纠正我），并且在服务器之一，它会转储以下内容错误（另一个很好）：
[02:05:30,912][SEVERE][tcp-disco-msg-worker-#2][TcpDiscoverySpi] Failed to marshal discovery data
[comp=0, data=DiscoveryData [nodeId=bb2beed3-38e9-4134-a898-b4aab8705c8c, items=[DiscoveryDataItem
[routineId=6be10471-bdfb-47e0-881a-aa9cf285cead, prjPred=IgniteAllNodesPredicate [],
hnd=CacheContinuousQueryHandlerV2 [rmtFilterFactory=com.test.simple.IgniteMatchClusterSingletonService$3@39812ce8,
rmtFilterFactoryDep=null, types=0], bufSize=1, interval=0, autoUnsubscribe=true], DiscoveryDataItem
[routineId=c0582fdc-0539-4c41-8238-f15d426af475, prjPred=IgniteAllNodesPredicate [],
hnd=CacheContinuousQueryHandler [cacheName=datastructures_ATOMIC_PARTITIONED_0@default-ds-group,
rmtFilter=o.a.i.i.processors.cache.datastructures.CacheDataStructuresManager$QueueHeaderPredicate@4e5687a1,
rmtFilterDep=null, internal=true, notifyExisting=true, oldValRequired=true, sync=false, ignoreExpired=true,
taskHash=0, skipPrimaryCheck=false, locCache=false, keepBinary=false, ackBuf=CacheContinuousQueryAcknowledgeBuffer
[size=0, updateCntrs={}, topVers=[]], cacheId=474336146, initTopVer=AffinityTopologyVersion [topVer=5, minorTopVer=10],
nodeLeft=false, ignoreClsNotFound=false, asyncCb=false, nodeId=bb2beed3-38e9-4134-a898-b4aab8705c8c,
routineId=c0582fdc-0539-4c41-8238-f15d426af475], bufSize=1, interval=0, autoUnsubscribe=true], DiscoveryDataItem
[routineId=a2ad72c7-cd07-4fd5-bb51-adf33d344238, prjPred=EqualsClusterNodeIdPredicate
[nodeId=bb2beed3-38e9-4134-a898-b4aab8705c8c], hnd=CacheContinuousQueryHandler [cacheName=ignite-sys-cache,
rmtFilter=null, rmtFilterDep=null, internal=true, notifyExisting=true, oldValRequired=true, sync=false,
ignoreExpired=true, taskHash=0, skipPrimaryCheck=true, locCache=false, keepBinary=false,
ackBuf=CacheContinuousQueryAcknowledgeBuffer [size=0, updateCntrs={}, topVers=[]], cacheId=-2100569601,
initTopVer=null, nodeLeft=false, ignoreClsNotFound=false, asyncCb=false, nodeId=bb2beed3-38e9-4134-a898-b4aab8705c8c,
routineId=a2ad72c7-cd07-4fd5-bb51-adf33d344238], bufSize=1, interval=0, autoUnsubscribe=true]]]]
class org.apache.ignite.IgniteCheckedException: Failed to serialize object: DiscoveryData [nodeId=bb2beed3-38e9-4134-a898-b4aab8705c8c,
items=[DiscoveryDataItem [routineId=6be10471-bdfb-47e0-881a-aa9cf285cead, prjPred=IgniteAllNodesPredicate [],
hnd=CacheContinuousQueryHandlerV2 [rmtFilterFactory=com.test.simple.IgniteMatchClusterSingletonService$3@39812ce8,
rmtFilterFactoryDep=null, types=0], bufSize=1, interval=0, autoUnsubscribe=true], DiscoveryDataItem
[routineId=c0582fdc-0539-4c41-8238-f15d426af475, prjPred=IgniteAllNodesPredicate [], hnd=CacheContinuousQueryHandler
[cacheName=datastructures_ATOMIC_PARTITIONED_0@default-ds-group,
rmtFilter=org.apache.ignite.internal.processors.cache.datastructures.CacheDataStructuresManager$QueueHeaderPredicate@4e5687a1,
rmtFilterDep=null, internal=true, notifyExisting=true, oldValRequired=true, sync=false, ignoreExpired=true,
taskHash=0, skipPrimaryCheck=false, locCache=false, keepBinary=false, ackBuf=CacheContinuousQueryAcknowledgeBuffer
[size=0, updateCntrs={}, topVers=[]], cacheId=474336146, initTopVer=AffinityTopologyVersion [topVer=5, minorTopVer=10],
nodeLeft=false, ignoreClsNotFound=false, asyncCb=false, nodeId=bb2beed3-38e9-4134-a898-b4aab8705c8c,
routineId=c0582fdc-0539-4c41-8238-f15d426af475], bufSize=1, interval=0, autoUnsubscribe=true], DiscoveryDataItem
[routineId=a2ad72c7-cd07-4fd5-bb51-adf33d344238, prjPred=EqualsClusterNodeIdPredicate [nodeId=bb2beed3-38e9-4134-a898-b4aab8705c8c],
hnd=CacheContinuousQueryHandler [cacheName=ignite-sys-cache, rmtFilter=null, rmtFilterDep=null, internal=true, notifyExisting=true,
oldValRequired=true, sync=false, ignoreExpired=true, taskHash=0, skipPrimaryCheck=true, locCache=false, keepBinary=false,
ackBuf=CacheContinuousQueryAcknowledgeBuffer [size=0, updateCntrs={}, topVers=[]], cacheId=-2100569601, initTopVer=null,
nodeLeft=false, ignoreClsNotFound=false, asyncCb=false, nodeId=bb2beed3-38e9-4134-a898-b4aab8705c8c,
routineId=a2ad72c7-cd07-4fd5-bb51-adf33d344238], bufSize=1, interval=0, autoUnsubscribe=true]]]
at org.apache.ignite.marshaller.jdk.JdkMarshaller.marshal0(JdkMarshaller.java:103)
at org.apache.ignite.marshaller.AbstractNodeNameAwareMarshaller.marshal(AbstractNodeNameAwareMarshaller.java:70)
at org.apache.ignite.marshaller.jdk.JdkMarshaller.marshal0(JdkMarshaller.java:117)
at org.apache.ignite.marshaller.AbstractNodeNameAwareMarshaller.marshal(AbstractNodeNameAwareMarshaller.java:58)
at org.apache.ignite.spi.discovery.tcp.internal.DiscoveryDataPacket.marshalData(DiscoveryDataPacket.java:311)
at org.apache.ignite.spi.discovery.tcp.internal.DiscoveryDataPacket.marshalGridNodeData(DiscoveryDataPacket.java:87)
at org.apache.ignite.spi.discovery.tcp.TcpDiscoverySpi.collectExchangeData(TcpDiscoverySpi.java:1897)
at org.apache.ignite.spi.discovery.tcp.ServerImpl$RingMessageWorker.processNodeAddedMessage(ServerImpl.java:4173)
at org.apache.ignite.spi.discovery.tcp.ServerImpl$RingMessageWorker.processMessage(ServerImpl.java:2706)
at org.apache.ignite.spi.discovery.tcp.ServerImpl$RingMessageWorker.processMessage(ServerImpl.java:2519)
at org.apache.ignite.spi.discovery.tcp.ServerImpl$MessageWorkerAdapter.body(ServerImpl.java:6707)
at org.apache.ignite.spi.discovery.tcp.ServerImpl$RingMessageWorker.body(ServerImpl.java:2602)
at org.apache.ignite.spi.IgniteSpiThread.run(IgniteSpiThread.java:62)
Caused by: java.io.NotSerializableException: com.test.simple.IgniteMatchClusterSingletonService$2
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1184)
at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1548)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1509)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1432)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1178)
at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1548)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1509)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1432)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1178)
at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1548)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1509)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1432)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1178)
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:348)
at org.apache.ignite.internal.processors.cache.query.continuous.CacheContinuousQueryHandlerV2.writeExternal(CacheContinuousQueryHandlerV2.java:157)
at java.io.ObjectOutputStream.writeExternalData(ObjectOutputStream.java:1459)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1430)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1178)
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:348)
at org.apache.ignite.internal.processors.continuous.GridContinuousProcessor$DiscoveryDataItem.writeExternal(GridContinuousProcessor.java:1853)
at java.io.ObjectOutputStream.writeExternalData(ObjectOutputStream.java:1459)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1430)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1178)
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:348)
at org.apache.ignite.internal.util.IgniteUtils.writeCollection(IgniteUtils.java:1754)
at org.apache.ignite.internal.processors.continuous.GridContinuousProcessor$DiscoveryData.writeExternal(GridContinuousProcessor.java:1772)
at java.io.ObjectOutputStream.writeExternalData(ObjectOutputStream.java:1459)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1430)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1178)
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:348)
at org.apache.ignite.marshaller.jdk.JdkMarshaller.marshal0(JdkMarshaller.java:98)
... 12 more
答案 0 :(得分：4)
根本原因清楚地显示在堆栈跟踪中：
Caused by: java.io.NotSerializableException: com.test.simple.IgniteMatchClusterSingletonService$2
有一个匿名类（com.test.simple.IgniteMatchClusterSingletonService$2）不是Serializable，而是与服务实例一起序列化。
如果这是预期的，那么您需要确保此类确实实现了Serializable。否则，请更改代码，以便不通过网络发送此类的实例。
一般情况下，我建议避免对可以序列化的任何内容使用匿名类或lambda。它们通常包含一个封闭类的链接，这使得更难理解序列化的内容和不序列化的内容。切换到内部静态类以避免这种情况。