# Getting "empty text" and "invalid version format" in elasticsearch log

**URL:** <https://discuss.elastic.co/t/getting-empty-text-and-invalid-version-format-in-elasticsearch-log/26177>\
**Category:** Elasticsearch\
**Created:** [July 23, 2015, 5:24pm UTC](https://discuss.elastic.co/t/getting-empty-text-and-invalid-version-format-in-elasticsearch-log/26177 "2015-07-23T17:24:39Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![lcampbell](https://avatars.discourse-cdn.com/v4/letter/l/ac8455/32.png) [@lcampbell](https://discuss.elastic.co/u/lcampbell)\
**Post date:** [July 23, 2015, 5:24pm UTC](https://discuss.elastic.co/t/getting-empty-text-and-invalid-version-format-in-elasticsearch-log/26177/1 "2015-07-23T17:24:39Z")

</div>

Im running ELK stack, and everything seems to be running ok, receiving events from logstash and data is observable in our kibana dashboard, but noticed these in the elasticsearch logs. Is there anything I can do or can I ignore this?

[2015-07-23 10:01:25,785][WARN][http.netty] [testserver1] Caught exception while handling client http traffic, closing connection [id: 0x80940855, /x.x.x.x:xxxxx :\> /x.x.x.x:9200]  
java.lang.IllegalArgumentException: empty text  
at org.elasticsearch.common.netty.handler.codec.http.HttpVersion.(HttpVersion.java:89)  
at org.elasticsearch.common.netty.handler.codec.http.HttpVersion.valueOf(HttpVersion.java:62)  
at org.elasticsearch.common.netty.handler.codec.http.HttpRequestDecoder.createMessage(HttpRequestDecoder.java:75)  
at org.elasticsearch.common.netty.handler.codec.http.HttpMessageDecoder.decode(HttpMessageDecoder.java:191)  
at org.elasticsearch.common.netty.handler.codec.http.HttpMessageDecoder.decode(HttpMessageDecoder.java:102)  
at org.elasticsearch.common.netty.handler.codec.replay.ReplayingDecoder.callDecode(ReplayingDecoder.java:500)  
at org.elasticsearch.common.netty.handler.codec.replay.ReplayingDecoder.cleanup(ReplayingDecoder.java:554)  
at org.elasticsearch.common.netty.handler.codec.frame.FrameDecoder.channelDisconnected(FrameDecoder.java:365)  
at org.elasticsearch.common.netty.channel.SimpleChannelUpstreamHandler.handleUpstream(SimpleChannelUpstreamHandler.java:102)  
at org.elasticsearch.common.netty.channel.DefaultChannelPipeline.sendUpstream(DefaultChannelPipeline.java:564)  
at org.elasticsearch.common.netty.channel.DefaultChannelPipeline$DefaultChannelHandlerContext.sendUpstream(DefaultChannelPipeline.java:791)  
at org.elasticsearch.common.netty.OpenChannelsHandler.handleUpstream(OpenChannelsHandler.java:74)  
at org.elasticsearch.common.netty.channel.DefaultChannelPipeline.sendUpstream(DefaultChannelPipeline.java:564)  
at org.elasticsearch.common.netty.channel.DefaultChannelPipeline.sendUpstream(DefaultChannelPipeline.java:559)  
at org.elasticsearch.common.netty.channel.Channels.fireChannelDisconnected(Channels.java:396)  
at org.elasticsearch.common.netty.channel.socket.nio.AbstractNioWorker.close(AbstractNioWorker.java:360)  
at org.elasticsearch.common.netty.channel.socket.nio.NioServerSocketPipelineSink.handleAcceptedSocket(NioServerSocketPipelineSink.java:81)  
at org.elasticsearch.common.netty.channel.socket.nio.NioServerSocketPipelineSink.eventSunk(NioServerSocketPipelineSink.java:36)  
at org.elasticsearch.common.netty.channel.DefaultChannelPipeline$DefaultChannelHandlerContext.sendDownstream(DefaultChannelPipeline.java:779)  
at org.elasticsearch.common.netty.handler.codec.oneone.OneToOneEncoder.handleDownstream(OneToOneEncoder.java:54)  
at org.elasticsearch.common.netty.channel.DefaultChannelPipeline.sendDownstream(DefaultChannelPipeline.java:591)  
at org.elasticsearch.common.netty.channel.DefaultChannelPipeline$DefaultChannelHandlerContext.sendDownstream(DefaultChannelPipeline.java:784)  
at org.elasticsearch.common.netty.channel.SimpleChannelHandler.closeRequested(SimpleChannelHandler.java:334)  
at org.elasticsearch.common.netty.channel.SimpleChannelHandler.handleDownstream(SimpleChannelHandler.java:260)  
at org.elasticsearch.http.netty.pipelining.HttpPipeliningHandler.handleDownstream(HttpPipeliningHandler.java:105)  
at org.elasticsearch.common.netty.channel.DefaultChannelPipeline.sendDownstream(DefaultChannelPipeline.java:591)  
at org.elasticsearch.common.netty.channel.DefaultChannelPipeline.sendDownstream(DefaultChannelPipeline.java:582)  
at org.elasticsearch.common.netty.channel.Channels.close(Channels.java:812)  
at org.elasticsearch.common.netty.channel.AbstractChannel.close(AbstractChannel.java:206)  
at org.elasticsearch.http.netty.NettyHttpServerTransport.exceptionCaught(NettyHttpServerTransport.java:343)  
at org.elasticsearch.http.netty.HttpRequestHandler.exceptionCaught(HttpRequestHandler.java:72)  
at org.elasticsearch.common.netty.channel.SimpleChannelUpstreamHandler.handleUpstream(SimpleChannelUpstreamHandler.java:112)  
at org.elasticsearch.common.netty.channel.DefaultChannelPipeline.sendUpstream(DefaultChannelPipeline.java:564)  
at org.elasticsearch.common.netty.channel.DefaultChannelPipeline$DefaultChannelHandlerContext.sendUpstream(DefaultChannelPipeline.java:791)  
at org.elasticsearch.common.netty.channel.SimpleChannelHandler.exceptionCaught(SimpleChannelHandler.java:156)  
at org.elasticsearch.common.netty.channel.SimpleChannelHandler.handleUpstream(SimpleChannelHandler.java:130)  
at org.elasticsearch.common.netty.channel.DefaultChannelPipeline.sendUpstream(DefaultChannelPipeline.java:564)  
at org.elasticsearch.common.netty.channel.DefaultChannelPipeline$DefaultChannelHandlerContext.sendUpstream(DefaultChannelPipeline.java:791)  
at org.elasticsearch.common.netty.channel.SimpleChannelUpstreamHandler.exceptionCaught(SimpleChannelUpstreamHandler.java:153)  
at org.elasticsearch.common.netty.channel.SimpleChannelUpstreamHandler.handleUpstream(SimpleChannelUpstreamHandler.java:112)  
at org.elasticsearch.common.netty.channel.DefaultChannelPipeline.sendUpstream(DefaultChannelPipeline.java:564)  
at org.elasticsearch.common.netty.channel.DefaultChannelPipeline$DefaultChannelHandlerContext.sendUpstream(DefaultChannelPipeline.java:791)  
at org.elasticsearch.common.netty.channel.SimpleChannelUpstreamHandler.exceptionCaught(SimpleChannelUpstreamHandler.java:153)  
at org.elasticsearch.common.netty.channel.SimpleChannelUpstreamHandler.handleUpstream(SimpleChannelUpstreamHandler.java:112)  
at org.elasticsearch.common.netty.channel.DefaultChannelPipeline.sendUpstream(DefaultChannelPipeline.java:564)  
at org.elasticsearch.common.netty.channel.DefaultChannelPipeline$DefaultChannelHandlerContext.sendUpstream(DefaultChannelPipeline.java:791)  
at org.elasticsearch.common.netty.handler.codec.frame.FrameDecoder.exceptionCaught(FrameDecoder.java:377)  
at org.elasticsearch.common.netty.channel.SimpleChannelUpstreamHandler.handleUpstream(SimpleChannelUpstreamHandler.java:112)  
at org.elasticsearch.common.netty.channel.DefaultChannelPipeline.sendUpstream(DefaultChannelPipeline.java:564)  
at org.elasticsearch.common.netty.channel.DefaultChannelPipeline$DefaultChannelHandlerContext.sendUpstream(DefaultChannelPipeline.java:791)  
at org.elasticsearch.common.netty.OpenChannelsHandler.handleUpstream(OpenChannelsHandler.java:74)  
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.fireExceptionCaught(Channels.java:525)  
at org.elasticsearch.common.netty.channel.AbstractChannelSink.exceptionCaught(AbstractChannelSink.java:48)  
at org.elasticsearch.common.netty.channel.DefaultChannelPipeline.notifyHandlerException(DefaultChannelPipeline.java:658)  
at org.elasticsearch.common.netty.channel.DefaultChannelPipeline.sendUpstream(DefaultChannelPipeline.java:566)  
at org.elasticsearch.common.netty.channel.DefaultChannelPipeline$DefaultChannelHandlerContext.sendUpstream(DefaultChannelPipeline.java:791)  
at org.elasticsearch.common.netty.OpenChannelsHandler.handleUpstream(OpenChannelsHandler.java:74)  
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:108)  
at org.elasticsearch.common.netty.channel.socket.nio.AbstractNioSelector.run(AbstractNioSelector.java:337)  
at org.elasticsearch.common.netty.channel.socket.nio.AbstractNioWorker.run(AbstractNioWorker.java:89)  
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:745)

[2015-07-23 10:03:25,704][WARN][http.netty] [testserver1] Caught exception while handling client http traffic, closing connection [id: 0xa74dac67, /x.x.x.x:xxxxx :\> /x.x.x.x:9200]  
java.lang.IllegalArgumentException: invalid version format: ﾴ￥ￗ￷\>ﾻ@NJￊQﾶP￝ￚ8/598/32  
at org.elasticsearch.common.netty.handler.codec.http.HttpVersion.(HttpVersion.java:94)  
at org.elasticsearch.common.netty.handler.codec.http.HttpVersion.valueOf(HttpVersion.java:62)  
at org.elasticsearch.common.netty.handler.codec.http.HttpRequestDecoder.createMessage(HttpRequestDecoder.java:75)  
at org.elasticsearch.common.netty.handler.codec.http.HttpMessageDecoder.decode(HttpMessageDecoder.java:191)  
at org.elasticsearch.common.netty.handler.codec.http.HttpMessageDecoder.decode(HttpMessageDecoder.java:102)  
at org.elasticsearch.common.netty.handler.codec.replay.ReplayingDecoder.callDecode(ReplayingDecoder.java:500)  
at org.elasticsearch.common.netty.handler.codec.replay.ReplayingDecoder.cleanup(ReplayingDecoder.java:554)  
at org.elasticsearch.common.netty.handler.codec.frame.FrameDecoder.channelDisconnected(FrameDecoder.java:365)  
at org.elasticsearch.common.netty.channel.SimpleChannelUpstreamHandler.handleUpstream(SimpleChannelUpstreamHandler.java:102)  
at org.elasticsearch.common.netty.channel.DefaultChannelPipeline.sendUpstream(DefaultChannelPipeline.java:564)  
at org.elasticsearch.common.netty.channel.DefaultChannelPipeline$DefaultChannelHandlerContext.sendUpstream(DefaultChannelPipeline.java:791)  
at org.elasticsearch.common.netty.OpenChannelsHandler.handleUpstream(OpenChannelsHandler.java:74)  
at org.elasticsearch.common.netty.channel.DefaultChannelPipeline.sendUpstream(DefaultChannelPipeline.java:564)  
at org.elasticsearch.common.netty.channel.DefaultChannelPipeline.sendUpstream(DefaultChannelPipeline.java:559)  
at org.elasticsearch.common.netty.channel.Channels.fireChannelDisconnected(Channels.java:396)  
at org.elasticsearch.common.netty.channel.socket.nio.AbstractNioWorker.close(AbstractNioWorker.java:360)  
at org.elasticsearch.common.netty.channel.socket.nio.NioServerSocketPipelineSink.handleAcceptedSocket(NioServerSocketPipelineSink.java:81)  
at org.elasticsearch.common.netty.channel.socket.nio.NioServerSocketPipelineSink.eventSunk(NioServerSocketPipelineSink.java:36)  
at org.elasticsearch.common.netty.channel.DefaultChannelPipeline$DefaultChannelHandlerContext.sendDownstream(DefaultChannelPipeline.java:779)  
at org.elasticsearch.common.netty.handler.codec.oneone.OneToOneEncoder.handleDownstream(OneToOneEncoder.java:54)  
at org.elasticsearch.common.netty.channel.DefaultChannelPipeline.sendDownstream(DefaultChannelPipeline.java:591)  
at org.elasticsearch.common.netty.channel.DefaultChannelPipeline$DefaultChannelHandlerContext.sendDownstream(DefaultChannelPipeline.java:784)  
at org.elasticsearch.common.netty.channel.SimpleChannelHandler.closeRequested(SimpleChannelHandler.java:334)  
at org.elasticsearch.common.netty.channel.SimpleChannelHandler.handleDownstream(SimpleChannelHandler.java:260)  
at org.elasticsearch.http.netty.pipelining.HttpPipeliningHandler.handleDownstream(HttpPipeliningHandler.java:105)  
at org.elasticsearch.common.netty.channel.DefaultChannelPipeline.sendDownstream(DefaultChannelPipeline.java:591)  
at org.elasticsearch.common.netty.channel.DefaultChannelPipeline.sendDownstream(DefaultChannelPipeline.java:582)  
at org.elasticsearch.common.netty.channel.Channels.close(Channels.java:812)  
at org.elasticsearch.common.netty.channel.AbstractChannel.close(AbstractChannel.java:206)  
at org.elasticsearch.http.netty.NettyHttpServerTransport.exceptionCaught(NettyHttpServerTransport.java:343)  
at org.elasticsearch.http.netty.HttpRequestHandler.exceptionCaught(HttpRequestHandler.java:72)  
at org.elasticsearch.common.netty.channel.SimpleChannelUpstreamHandler.handleUpstream(SimpleChannelUpstreamHandler.java:112)  
at org.elasticsearch.common.netty.channel.DefaultChannelPipeline.sendUpstream(DefaultChannelPipeline.java:564)  
at org.elasticsearch.common.netty.channel.DefaultChannelPipeline$DefaultChannelHandlerContext.sendUpstream(DefaultChannelPipeline.java:791)  
at org.elasticsearch.common.netty.channel.SimpleChannelHandler.exceptionCaught(SimpleChannelHandler.java:156)  
at org.elasticsearch.common.netty.channel.SimpleChannelHandler.handleUpstream(SimpleChannelHandler.java:130)  
at org.elasticsearch.common.netty.channel.DefaultChannelPipeline.sendUpstream(DefaultChannelPipeline.java:564)  
at org.elasticsearch.common.netty.channel.DefaultChannelPipeline$DefaultChannelHandlerContext.sendUpstream(DefaultChannelPipeline.java:791)  
at org.elasticsearch.common.netty.channel.SimpleChannelUpstreamHandler.exceptionCaught(SimpleChannelUpstreamHandler.java:153)  
at org.elasticsearch.common.netty.channel.SimpleChannelUpstreamHandler.handleUpstream(SimpleChannelUpstreamHandler.java:112)  
at org.elasticsearch.common.netty.channel.DefaultChannelPipeline.sendUpstream(DefaultChannelPipeline.java:564)  
at org.elasticsearch.common.netty.channel.DefaultChannelPipeline$DefaultChannelHandlerContext.sendUpstream(DefaultChannelPipeline.java:791)  
at org.elasticsearch.common.netty.channel.SimpleChannelUpstreamHandler.exceptionCaught(SimpleChannelUpstreamHandler.java:153)  
at org.elasticsearch.common.netty.channel.SimpleChannelUpstreamHandler.handleUpstream(SimpleChannelUpstreamHandler.java:112)  
at org.elasticsearch.common.netty.channel.DefaultChannelPipeline.sendUpstream(DefaultChannelPipeline.java:564)  
at org.elasticsearch.common.netty.channel.DefaultChannelPipeline$DefaultChannelHandlerContext.sendUpstream(DefaultChannelPipeline.java:791)  
at org.elasticsearch.common.netty.handler.codec.frame.FrameDecoder.exceptionCaught(FrameDecoder.java:377)  
at org.elasticsearch.common.netty.channel.SimpleChannelUpstreamHandler.handleUpstream(SimpleChannelUpstreamHandler.java:112)  
at org.elasticsearch.common.netty.channel.DefaultChannelPipeline.sendUpstream(DefaultChannelPipeline.java:564)  
at org.elasticsearch.common.netty.channel.DefaultChannelPipeline$DefaultChannelHandlerContext.sendUpstream(DefaultChannelPipeline.java:791)  
at org.elasticsearch.common.netty.OpenChannelsHandler.handleUpstream(OpenChannelsHandler.java:74)  
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.fireExceptionCaught(Channels.java:525)  
at org.elasticsearch.common.netty.channel.AbstractChannelSink.exceptionCaught(AbstractChannelSink.java:48)  
at org.elasticsearch.common.netty.channel.DefaultChannelPipeline.notifyHandlerException(DefaultChannelPipeline.java:658)  
at org.elasticsearch.common.netty.channel.DefaultChannelPipeline.sendUpstream(DefaultChannelPipeline.java:566)  
at org.elasticsearch.common.netty.channel.DefaultChannelPipeline$DefaultChannelHandlerContext.sendUpstream(DefaultChannelPipeline.java:791)  
at org.elasticsearch.common.netty.OpenChannelsHandler.handleUpstream(OpenChannelsHandler.java:74)  
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:108)  
at org.elasticsearch.common.netty.channel.socket.nio.AbstractNioSelector.run(AbstractNioSelector.java:337)  
at org.elasticsearch.common.netty.channel.socket.nio.AbstractNioWorker.run(AbstractNioWorker.java:89)  
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:745)

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<div class="post-metadata">

**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [July 5, 2017, 11:59pm UTC](https://discuss.elastic.co/t/getting-empty-text-and-invalid-version-format-in-elasticsearch-log/26177/2 "2017-07-05T23:59:28Z")

</div>