# 504 error issue **URL:** \ **Category:** Elasticsearch\ **Created:** [October 28, 2013, 4:39pm UTC](https://discuss.elastic.co/t/504-error-issue/14142 "2013-10-28T16:39:13Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![fred](https://avatars.discourse-cdn.com/v4/letter/f/db5fbb/32.png) [@fred](https://discuss.elastic.co/u/fred)\ **Post date:** [October 28, 2013, 4:39pm UTC](https://discuss.elastic.co/t/504-error-issue/14142/1 "2013-10-28T16:39:13Z")
Hello, Every once in a while, my client gets disconnected from my server, with the following stack. ES version is 0.90.2, with the following cluster setup: - 2 http nodes - 3 data nodes The ES http hosts are single vcpu Amazon Virtual machines with 3.7Gb RAM. If anyone has a hint on what happens, I'd gladly welcome any opinion. Best regards [2013-10-28 16:28:05,501][DEBUG][http.netty] [[xxx.eu-west-1.compute.amazonaws.com](http://xxx.eu-west-1.compute.amazonaws.com)] Caught exception while handling client http traffic, closing connection [id: 0x7a568736, /xxx:46870 =\> /xxx:9200] java.io.IOException: Connection reset by peer at sun.nio.ch.FileDispatcherImpl.read0(Native Method) at sun.nio.ch.SocketDispatcher.read(SocketDispatcher.java:39) at sun.nio.ch.IOUtil.readIntoNativeBuffer(IOUtil.java:225) at sun.nio.ch.IOUtil.read(IOUtil.java:193) at sun.nio.ch.SocketChannelImpl.read(SocketChannelImpl.java:375) at org.elasticsearch.common.netty.channel.socket.nio.NioWorker.read(NioWorker.java:64) at org.elasticsearch.common.netty.channel.socket.nio.AbstractNioWorker.process(AbstractNioWorker.java:109) at org.elasticsearch.common.netty.channel.socket.nio.AbstractNioSelector.run(AbstractNioSelector.java:312) at org.elasticsearch.common.netty.channel.socket.nio.AbstractNioWorker.run(AbstractNioWorker.java:90) at org.elasticsearch.common.netty.channel.socket.nio.NioWorker.run(NioWorker.java:178) at org.elasticsearch.common.netty.util.ThreadRenamingRunnable.run(ThreadRenamingRunnable.java:108) at org.elasticsearch.common.netty.util.internal.DeadLockProofWorker$1.run(DeadLockProofWorker.java:42) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) at java.lang.Thread.run(Thread.java:724) [2013-10-28 16:28:07,946][DEBUG][http.netty] [[xxx.eu-west-1.compute.amazonaws.com](http://xxx.eu-west-1.compute.amazonaws.com)] Caught exception while handling client http traffic, closing connection [id: 0x7a568736, /xxx:46870 :\> /xxx:9200] java.nio.channels.ClosedChannelException at org.elasticsearch.common.netty.channel.socket.nio.AbstractNioWorker.cleanUpWriteBuffer(AbstractNioWorker.java:434) at org.elasticsearch.common.netty.channel.socket.nio.AbstractNioWorker.writeFromUserCode(AbstractNioWorker.java:129) at org.elasticsearch.common.netty.channel.socket.nio.NioServerSocketPipelineSink.handleAcceptedSocket(NioServerSocketPipelineSink.java:99) at org.elasticsearch.common.netty.channel.socket.nio.NioServerSocketPipelineSink.eventSunk(NioServerSocketPipelineSink.java:36) at org.elasticsearch.common.netty.channel.DefaultChannelPipeline$DefaultChannelHandlerContext.sendDownstream(DefaultChannelPipeline.java:779) at org.elasticsearch.common.netty.channel.Channels.write(Channels.java:725) at org.elasticsearch.common.netty.handler.codec.oneone.OneToOneEncoder.doEncode(OneToOneEncoder.java:71) at org.elasticsearch.common.netty.handler.codec.oneone.OneToOneEncoder.handleDownstream(OneToOneEncoder.java:59) at org.elasticsearch.common.netty.channel.DefaultChannelPipeline.sendDownstream(DefaultChannelPipeline.java:591) at org.elasticsearch.common.netty.channel.DefaultChannelPipeline.sendDownstream(DefaultChannelPipeline.java:582) at org.elasticsearch.common.netty.channel.Channels.write(Channels.java:704) at org.elasticsearch.common.netty.channel.Channels.write(Channels.java:671) at org.elasticsearch.common.netty.channel.AbstractChannel.write(AbstractChannel.java:248) at org.elasticsearch.http.netty.NettyHttpChannel.sendResponse(NettyHttpChannel.java:164) at org.elasticsearch.rest.action.bulk.RestBulkAction$1.onResponse(RestBulkAction.java:135) at org.elasticsearch.rest.action.bulk.RestBulkAction$1.onResponse(RestBulkAction.java:96) at org.elasticsearch.action.bulk.TransportBulkAction$2.finishHim(TransportBulkAction.java:282) at org.elasticsearch.action.bulk.TransportBulkAction$2.onResponse(TransportBulkAction.java:251) at org.elasticsearch.action.bulk.TransportBulkAction$2.onResponse(TransportBulkAction.java:242) at org.elasticsearch.action.support.replication.TransportShardReplicationOperationAction$AsyncShardOperationAction$2.handleResponse(TransportShardReplicationOperationAction.java:452) at org.elasticsearch.action.support.replication.TransportShardReplicationOperationAction$AsyncShardOperationAction$2.handleResponse(TransportShardReplicationOperationAction.java:438) at org.elasticsearch.transport.netty.MessageChannelHandler.handleResponse(MessageChannelHandler.java:153) at org.elasticsearch.transport.netty.MessageChannelHandler.messageReceived(MessageChannelHandler.java:124) at org.elasticsearch.common.netty.channel.SimpleChannelUpstreamHandler.handleUpstream(SimpleChannelUpstreamHandler.java:70) at org.elasticsearch.common.netty.channel.DefaultChannelPipeline.sendUpstream(DefaultChannelPipeline.java:564) at org.elasticsearch.common.netty.channel.DefaultChannelPipeline$DefaultChannelHandlerContext.sendUpstream(DefaultChannelPipeline.java:791) at org.elasticsearch.common.netty.channel.Channels.fireMessageReceived(Channels.java:296) at org.elasticsearch.common.netty.handler.codec.frame.FrameDecoder.unfoldAndFireMessageReceived(FrameDecoder.java:462) at org.elasticsearch.common.netty.handler.codec.frame.FrameDecoder.callDecode(FrameDecoder.java:443) at org.elasticsearch.common.netty.handler.codec.frame.FrameDecoder.messageReceived(FrameDecoder.java:310) at org.elasticsearch.common.netty.channel.SimpleChannelUpstreamHandler.handleUpstream(SimpleChannelUpstreamHandler.java:70) at org.elasticsearch.common.netty.channel.DefaultChannelPipeline.sendUpstream(DefaultChannelPipeline.java:564) at org.elasticsearch.common.netty.channel.DefaultChannelPipeline.sendUpstream(DefaultChannelPipeline.java:559) at org.elasticsearch.common.netty.channel.Channels.fireMessageReceived(Channels.java:268) at org.elasticsearch.common.netty.channel.Channels.fireMessageReceived(Channels.java:255) at org.elasticsearch.common.netty.channel.socket.nio.NioWorker.read(NioWorker.java:88) at org.elasticsearch.common.netty.channel.socket.nio.AbstractNioWorker.process(AbstractNioWorker.java:109) at org.elasticsearch.common.netty.channel.socket.nio.AbstractNioSelector.run(AbstractNioSelector.java:312) at org.elasticsearch.common.netty.channel.socket.nio.AbstractNioWorker.run(AbstractNioWorker.java:90) at org.elasticsearch.common.netty.channel.socket.nio.NioWorker.run(NioWorker.java:178) at org.elasticsearch.common.netty.util.ThreadRenamingRunnable.run(ThreadRenamingRunnable.java:108) at org.elasticsearch.common.netty.util.internal.DeadLockProofWorker$1.run(DeadLockProofWorker.java:42) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) at java.lang.Thread.run(Thread.java:724) -- You received this message because you are subscribed to the Google Groups "elasticsearch" group. To unsubscribe from this group and stop receiving emails from it, send an email to [elasticsearch+unsubscribe@googlegroups.com](mailto:elasticsearch+unsubscribe@googlegroups.com). For more options, visit [https://groups.google.com/groups/opt\_out](https://groups.google.com/groups/opt_out). ---
**Author:** ![jprante](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/jprante/32/44941_2.png) [@jprante](https://discuss.elastic.co/u/jprante)\ **Post date:** [October 28, 2013, 4:59pm UTC](https://discuss.elastic.co/t/504-error-issue/14142/2 "2013-10-28T16:59:58Z")
"Connection reset by peer" means the cluster node received a premature disconnect from the client (probably caused by a signal in the client, like process exit, SIGINT, SIGKILL, SIGABRT, SIGQUIT) Jörg -- You received this message because you are subscribed to the Google Groups "elasticsearch" group. To unsubscribe from this group and stop receiving emails from it, send an email to [elasticsearch+unsubscribe@googlegroups.com](mailto:elasticsearch+unsubscribe@googlegroups.com). For more options, visit [https://groups.google.com/groups/opt\_out](https://groups.google.com/groups/opt_out). ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [July 6, 2017, 2:10am UTC](https://discuss.elastic.co/t/504-error-issue/14142/3 "2017-07-06T02:10:12Z")