I have a single node cluster deployment on Elasticsearch 5.6.9..
During and After the ES startup, i continuously see a lot of these messages in the logs.
Any help how to debug this further ?
2018-06-26 08:23:39,623 [orker.default]][T#2]] [ ] [ ] [ ] (ansport.netty4.Netty4Transport) WARN - exception caught on transport layer [[id: 0x7e1b44e8, L:0.0.0.0/0.0.0.0:9300]], closing connection
io.netty.handler.codec.DecoderException: java.io.StreamCorruptedException: invalid internal transport message format, got (16,3,3,0)
at io.netty.handler.codec.ByteToMessageDecoder.callDecode(ByteToMessageDecoder.java:459) ~[netty-codec-4.1.13.Final.jar:?]
at io.netty.handler.codec.ByteToMessageDecoder.channelInputClosed(ByteToMessageDecoder.java:392) ~[netty-codec-4.1.13.Final.jar:?]
at io.netty.handler.codec.ByteToMessageDecoder.channelInputClosed(ByteToMessageDecoder.java:359) ~[netty-codec-4.1.13.Final.jar:?]
at io.netty.handler.codec.ByteToMessageDecoder.channelInactive(ByteToMessageDecoder.java:342) ~[netty-codec-4.1.13.Final.jar:?]
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelInactive(AbstractChannelHandlerContext.java:245) ~[netty-transport-4.1.13.Final.jar:?]
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelInactive(AbstractChannelHandlerContext.java:231) ~[netty-transport-4.1.13.Final.jar:?]
at io.netty.channel.AbstractChannelHandlerContext.fireChannelInactive(AbstractChannelHandlerContext.java:224) ~[netty-transport-4.1.13.Final.jar:?]
at io.netty.channel.ChannelInboundHandlerAdapter.channelInactive(ChannelInboundHandlerAdapter.java:75) ~[netty-transport-4.1.13.Final.jar:?]
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelInactive(AbstractChannelHandlerContext.java:245) ~[netty-transport-4.1.13.Final.jar:?]
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelInactive(AbstractChannelHandlerContext.java:231) ~[netty-transport-4.1.13.Final.jar:?]
at io.netty.channel.AbstractChannelHandlerContext.fireChannelInactive(AbstractChannelHandlerContext.java:224) ~[netty-transport-4.1.13.Final.jar:?]
at io.netty.handler.logging.LoggingHandler.channelInactive(LoggingHandler.java:167) ~[netty-handler-4.1.13.Final.jar:?]
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelInactive(AbstractChannelHandlerContext.java:245) ~[netty-transport-4.1.13.Final.jar:?]
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelInactive(AbstractChannelHandlerContext.java:231) ~[netty-transport-4.1.13.Final.jar:?]
at io.netty.channel.AbstractChannelHandlerContext.fireChannelInactive(AbstractChannelHandlerContext.java:224) ~[netty-transport-4.1.13.Final.jar:?]
at io.netty.channel.DefaultChannelPipeline$HeadContext.channelInactive(DefaultChannelPipeline.java:1329) ~[netty-transport-4.1.13.Final.jar:?]
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelInactive(AbstractChannelHandlerContext.java:245) ~[netty-transport-4.1.13.Final.jar:?]
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelInactive(AbstractChannelHandlerContext.java:231) ~[netty-transport-4.1.13.Final.jar:?]
at io.netty.channel.DefaultChannelPipeline.fireChannelInactive(DefaultChannelPipeline.java:908) ~[netty-transport-4.1.13.Final.jar:?]
at io.netty.channel.AbstractChannel$AbstractUnsafe$7.run(AbstractChannel.java:744) ~[netty-transport-4.1.13.Final.jar:?]
at io.netty.util.concurrent.AbstractEventExecutor.safeExecute(AbstractEventExecutor.java:163) ~[netty-common-4.1.13.Final.jar:?]
at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:403) ~[netty-common-4.1.13.Final.jar:?]
at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:462) ~[netty-transport-4.1.13.Final.jar:?]
at io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:858) ~[netty-common-4.1.13.Final.jar:?]
at java.lang.Thread.run(Thread.java:811) [?:2.9 (11-22-2017)]
Caused by: java.io.StreamCorruptedException: invalid internal transport message format, got (16,3,3,0)
at org.elasticsearch.transport.TcpTransport.validateMessageHeader(TcpTransport.java:1293) ~[elasticsearch-5.6.9.jar:?]
at org.elasticsearch.transport.netty4.Netty4SizeHeaderFrameDecoder.decode(Netty4SizeHeaderFrameDecoder.java:36) ~[transport-netty4-client-5.6.9.jar:?]
at io.netty.handler.codec.ByteToMessageDecoder.decodeRemovalReentryProtection(ByteToMessageDecoder.java:489) ~[netty-codec-4.1.13.Final.jar:?]
at io.netty.handler.codec.ByteToMessageDecoder.callDecode(ByteToMessageDecoder.java:428) ~[netty-codec-4.1.13.Final.jar:?]
... 24 more