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我正在将 Java 项目从 Java 8 (1.8.0_222) + Neo4J 驱动程序版本 1.3.1 升级到 Java 11.0.2 + Neo4J 驱动程序版本 4.0.2。在进行必要的更改时,我遇到了以前没有的问题。

我正在使用期货来计算自定义过程中节点列表的得分值。此评分操作需要在可调用方法中多次从数据库中获取节点的关系和邻居。在整个过程测试的不同时间点,我收到以下两个错误。这会导致一些期货失败,返回的结果比预期的要少。

生成此错误的代码适用于 Java 8 + Neo4J 驱动程序版本 1.3.1。此外,当使用 Java 11.0.2 + Neo4J 驱动程序版本 4.0.2 时,分数计算也给出了预期的结果,但仅在同步调用时,而不使用期货。当异步调用时,它会产生意外的行为,通常会导致测试失败并输出不同的结果。

我在手工制作的 20 节点测试数据库上运行代码,并且没有执行任何插入、更新或删除操作,因此我可以排除数据损坏的可能性。同步调用不是一种选择,因为需要快速获得这些结果。

如果有人知道什么会产生这个问题以及我能做些什么来解决它,请告诉我。

遇到的两个堆栈跟踪是:

NOT PART OF CHAIN! RelationshipTraversalCursor[id=18, open state with: denseNode=false, next=18, mode=regular, underlying record=Relationship[18,used=true,source=13,target=4,type=2,sCount=2,sNext=17,tPrev=16,tNext=39,prop=174,secondaryUnitId=-1, sFirst,!tFirst]]
java.lang.IllegalStateException: NOT PART OF CHAIN! RelationshipTraversalCursor[id=18, open state with: denseNode=false, next=18, mode=regular, underlying record=Relationship[18,used=true,source=13,target=4,type=2,sCount=2,sNext=17,tPrev=16,tNext=39,prop=174,secondaryUnitId=-1, sFirst,!tFirst]]
    at org.neo4j.internal.recordstorage.RecordRelationshipTraversalCursor.computeNext(RecordRelationshipTraversalCursor.java:287)
    at org.neo4j.internal.recordstorage.RecordRelationshipTraversalCursor.next(RecordRelationshipTraversalCursor.java:176)
    at org.neo4j.kernel.impl.newapi.DefaultRelationshipTraversalCursor.next(DefaultRelationshipTraversalCursor.java:189)
    at org.neo4j.internal.kernel.api.helpers.RelationshipSparseSelection.fetchNext(RelationshipSparseSelection.java:135)
    at org.neo4j.internal.kernel.api.helpers.RelationshipSparseSelectionIterator.hasNext(RelationshipSparseSelectionIterator.java:47)
    at recommendations.helpers.CustomerInterface.getCustomerOrderedProducts(CustomerInterface.java:108)
    at recommendations.helpers.CategoryWorker.getSimilarProducts(CategoryWorker.java:276)
    at recommendations.helpers.CategoryWorker.call(CategoryWorker.java:78)
    at recommendations.helpers.CategoryWorker.call(CategoryWorker.java:15)
    at java.base/java.util.concurrent.FutureTask.run$$$capture(FutureTask.java:264)
    at java.base/java.util.concurrent.FutureTask.run(FutureTask.java)
    at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
    at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
    at java.base/java.lang.Thread.run(Thread.java:834)
org.neo4j.driver.exceptions.ClientException: Failed to invoke procedure `rec.relevantCategories`: Caused by: recommendations.exceptions.DatabaseRuntimeException: org.neo4j.kernel.impl.store.InvalidRecordException: DynamicRecord[1048576,used=false,(0),type=-1,data=byte[],start=true,next=-1] not in use

    at org.neo4j.driver.internal.util.Futures.blockingGet(Futures.java:143)
    at org.neo4j.driver.internal.InternalResult.blockingGet(InternalResult.java:128)
    at org.neo4j.driver.internal.InternalResult.list(InternalResult.java:105)
    at recommendations.RelevantCategoriesTest.testCategoryFilter(RelevantCategoriesTest.java:64)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.base/java.lang.reflect.Method.invoke(Method.java:566)
    at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:59)
    at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
    at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:56)
    at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
    at org.junit.runners.ParentRunner$3.evaluate(ParentRunner.java:306)
    at org.junit.runners.BlockJUnit4ClassRunner$1.evaluate(BlockJUnit4ClassRunner.java:100)
    at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:366)
    at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:103)
    at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:63)
    at org.junit.runners.ParentRunner$4.run(ParentRunner.java:331)
    at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:79)
    at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:329)
    at org.junit.runners.ParentRunner.access$100(ParentRunner.java:66)
    at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:293)
    at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26)
    at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:27)
    at org.neo4j.harness.junit.rule.Neo4jRule$1.evaluate(Neo4jRule.java:89)
    at org.junit.rules.RunRules.evaluate(RunRules.java:20)
    at org.junit.runners.ParentRunner$3.evaluate(ParentRunner.java:306)
    at org.junit.runners.ParentRunner.run(ParentRunner.java:413)
    at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
    at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68)
    at com.intellij.rt.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:33)
    at com.intellij.rt.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:230)
    at com.intellij.rt.junit.JUnitStarter.main(JUnitStarter.java:58)
    Suppressed: org.neo4j.driver.internal.util.ErrorUtil$InternalExceptionCause
        at org.neo4j.driver.internal.util.ErrorUtil.newNeo4jError(ErrorUtil.java:80)
        at org.neo4j.driver.internal.async.inbound.InboundMessageDispatcher.handleFailureMessage(InboundMessageDispatcher.java:105)
        at org.neo4j.driver.internal.messaging.v1.MessageReaderV1.unpackFailureMessage(MessageReaderV1.java:83)
        at org.neo4j.driver.internal.messaging.v1.MessageReaderV1.read(MessageReaderV1.java:59)
        at org.neo4j.driver.internal.async.inbound.InboundMessageHandler.channelRead0(InboundMessageHandler.java:83)
        at org.neo4j.driver.internal.async.inbound.InboundMessageHandler.channelRead0(InboundMessageHandler.java:35)
        at org.neo4j.driver.internal.shaded.io.netty.channel.SimpleChannelInboundHandler.channelRead(SimpleChannelInboundHandler.java:99)
        at org.neo4j.driver.internal.shaded.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379)
        at org.neo4j.driver.internal.shaded.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365)
        at org.neo4j.driver.internal.shaded.io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:357)
        at org.neo4j.driver.internal.shaded.io.netty.handler.codec.ByteToMessageDecoder.fireChannelRead(ByteToMessageDecoder.java:324)
        at org.neo4j.driver.internal.shaded.io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:296)
        at org.neo4j.driver.internal.async.inbound.MessageDecoder.channelRead(MessageDecoder.java:47)
        at org.neo4j.driver.internal.shaded.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379)
        at org.neo4j.driver.internal.shaded.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365)
        at org.neo4j.driver.internal.shaded.io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:357)
        at org.neo4j.driver.internal.shaded.io.netty.handler.codec.ByteToMessageDecoder.fireChannelRead(ByteToMessageDecoder.java:324)
        at org.neo4j.driver.internal.shaded.io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:296)
        at org.neo4j.driver.internal.shaded.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379)
        at org.neo4j.driver.internal.shaded.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365)
        at org.neo4j.driver.internal.shaded.io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:357)
        at org.neo4j.driver.internal.shaded.io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1410)
        at org.neo4j.driver.internal.shaded.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379)
        at org.neo4j.driver.internal.shaded.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365)
        at org.neo4j.driver.internal.shaded.io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:919)
        at org.neo4j.driver.internal.shaded.io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:163)
        at org.neo4j.driver.internal.shaded.io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:714)
        at org.neo4j.driver.internal.shaded.io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:650)
        at org.neo4j.driver.internal.shaded.io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:576)
        at org.neo4j.driver.internal.shaded.io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:493)
        at org.neo4j.driver.internal.shaded.io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:989)
        at org.neo4j.driver.internal.shaded.io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74)
        at org.neo4j.driver.internal.shaded.io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)
        at java.base/java.lang.Thread.run(Thread.java:834)

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