Hi all,

i got following exception:

17/08/21 12:33:56 ERROR TransportClient: Failed to send RPC 5493448667271613330 
to /10.210.85.3:52482: java.lang.AbstractMethodError
java.lang.AbstractMethodError
        at io.netty.util.ReferenceCountUtil.touch(ReferenceCountUtil.java:73)
        at 
io.netty.channel.DefaultChannelPipeline.touch(DefaultChannelPipeline.java:107)
        at 
io.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:811)
        at 
io.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:724)
        at 
io.netty.handler.codec.MessageToMessageEncoder.write(MessageToMessageEncoder.java:111)
        at 
io.netty.channel.AbstractChannelHandlerContext.invokeWrite0(AbstractChannelHandlerContext.java:739)
        at 
io.netty.channel.AbstractChannelHandlerContext.invokeWrite(AbstractChannelHandlerContext.java:731)
        at 
io.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:817)
        at 
io.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:724)
        at 
io.netty.handler.timeout.IdleStateHandler.write(IdleStateHandler.java:305)
        at 
io.netty.channel.AbstractChannelHandlerContext.invokeWrite0(AbstractChannelHandlerContext.java:739)
        at 
io.netty.channel.AbstractChannelHandlerContext.invokeWrite(AbstractChannelHandlerContext.java:731)
        at 
io.netty.channel.AbstractChannelHandlerContext.access$1900(AbstractChannelHandlerContext.java:38)
        at 
io.netty.channel.AbstractChannelHandlerContext$AbstractWriteTask.write(AbstractChannelHandlerContext.java:1090)
        at 
io.netty.channel.AbstractChannelHandlerContext$WriteAndFlushTask.write(AbstractChannelHandlerContext.java:1137)
        at 
io.netty.channel.AbstractChannelHandlerContext$AbstractWriteTask.run(AbstractChannelHandlerContext.java:1079)
        at 
io.netty.util.concurrent.AbstractEventExecutor.safeExecute(AbstractEventExecutor.java:163)
        at 
io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:403)
        at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:445)
        at 
io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:858)
        at 
io.netty.util.concurrent.DefaultThreadFactory$DefaultRunnableDecorator.run(DefaultThreadFactory.java:144)
        at java.lang.Thread.run(Thread.java:745)


We think that this is caused by incompatible versions of netty. We also have a 
transitive dependency in neo4j dependencies. They are using 
io.netty:netty-all.4.1.8.Final … Does anybody can provide some help?

Regards,
Pascal Stammer


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