2
我试图将系统从1.8升级到1.9.1，并在我的日志中获取错误消息。在群集内运行嵌入式HA实例时Neo4j空指针
在具有一个或多个独立neo4j实例的集群中运行neo4j的嵌入式版本时，我在日志中反复得到以下错误。只有嵌入式实例是主设备时才会出现该错误。如果它是从属的，它不会打印这些错误。该系统似乎工作得很好，但工作继续每隔几秒钟运行一次并打印此错误消息。
任何想法？
[Server receiving-2] ERROR org.neo4j.kernel.ha.com.master.MasterServer:176 - Exception from Netty java.lang.NullPointerException: null at org.neo4j.com.Server$ServerHandler.writeComplete(Server.java:337) ~[neo4j-com-1.9.1.jar:1.9.1] at org.jboss.netty.channel.Channels.fireWriteComplete(Channels.java:324) ~[netty-3.6.3.Final.jar:na] at org.jboss.netty.channel.socket.nio.AbstractNioWorker.write0(AbstractNioWorker.java:275) ~[netty-3.6.3.Final.jar:na] at org.jboss.netty.channel.socket.nio.AbstractNioWorker.writeFromTaskLoop(AbstractNioWorker.java:150) ~[netty-3.6.3.Final.jar:na] at org.jboss.netty.channel.socket.nio.AbstractNioChannel$WriteTask.run(AbstractNioChannel.java:335) ~[netty-3.6.3.Final.jar:na] at org.jboss.netty.channel.socket.nio.AbstractNioSelector.processTaskQueue(AbstractNioSelector.java:366) ~[netty-3.6.3.Final.jar:na] at org.jboss.netty.channel.socket.nio.AbstractNioSelector.run(AbstractNioSelector.java:290) ~[netty-3.6.3.Final.jar:na] at org.jboss.netty.channel.socket.nio.AbstractNioWorker.run(AbstractNioWorker.java:88) ~[netty-3.6.3.Final.jar:na] at org.jboss.netty.channel.socket.nio.NioWorker.run(NioWorker.java:178) ~[netty-3.6.3.Final.jar:na] at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) ~[na:1.7.0_25] at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) ~[na:1.7.0_25] at java.lang.Thread.run(Thread.java:724) ~[na:1.7.0_25]