elastic search log

[2013-04-25 22:54:54,194][WARN ][http.netty               ] [logstash] Caught exception while handling client http traffic, closing connection [id: 0x6c40010f, /127.0.0.1:39982 => /127.0.0.1:9200]
java.lang.IllegalArgumentException: empty text
        at org.elasticsearch.common.netty.handler.codec.http.HttpVersion.<init>(HttpVersion.java:97)
        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:189)
        at org.elasticsearch.common.netty.handler.codec.http.HttpMessageDecoder.decode(HttpMessageDecoder.java:101)
        at org.elasticsearch.common.netty.handler.codec.replay.ReplayingDecoder.callDecode(ReplayingDecoder.java:500)
        at org.elasticsearch.common.netty.handler.codec.replay.ReplayingDecoder.messageReceived(ReplayingDecoder.java:435)
        at org.elasticsearch.common.netty.channel.SimpleChannelUpstreamHandler.handleUpstream(SimpleChannelUpstreamHandler.java:70)
        at org.elasticsearch.common.netty.channel.DefaultChannelPipeline.sendUpstream(DefaultChannelPipeline.java:560)
        at org.elasticsearch.common.netty.channel.DefaultChannelPipeline$DefaultChannelHandlerContext.sendUpstream(DefaultChannelPipeline.java:787)
        at org.elasticsearch.common.netty.OpenChannelsHandler.handleUpstream(OpenChannelsHandler.java:74)
        at org.elasticsearch.common.netty.channel.DefaultChannelPipeline.sendUpstream(DefaultChannelPipeline.java:560)
        at org.elasticsearch.common.netty.channel.DefaultChannelPipeline.sendUpstream(DefaultChannelPipeline.java:555)
        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:107)
        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:88)
        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$1.run(DeadLockProofWorker.java:42)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1146)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
        at java.lang.Thread.run(Thread.java:679)

logstash exception

:exception=>#<EOFError: End of file reached>, :backtrace=>["org/jruby/RubyIO.java:2836:in `sysread'", "jar:file:/usr/local/bin/logstash-1.1.9-monolithic.jar!/gems/ftw-0.0.26/lib/ftw/connection.rb:230:in `read'", "jar:file:/usr/local/bin/logstash-1.1.9-monolithic.jar!/gems/ftw-0.0.26/lib/ftw/protocol.rb:30:in `read_http_message'", "jar:file:/usr/local/bin/logstash-1.1.9-monolithic.jar!/gems/ftw-0.0.26/lib/ftw/request.rb:93:in `execute'", "jar:file:/usr/local/bin/logstash-1.1.9-monolithic.jar!/gems/ftw-0.0.26/lib/ftw/agent.rb:311:in `execute'", "jar:file:/usr/local/bin/logstash-1.1.9-monolithic.jar!/gems/ftw-0.0.26/lib/ftw/agent.rb:205:in `post!'", "file:/usr/local/bin/logstash-1.1.9-monolithic.jar!/logstash/outputs/elasticsearch_http.rb:110:in `flush'", "file:/usr/local/bin/logstash-1.1.9-monolithic.jar!/logstash/outputs/elasticsearch_http.rb:98:in `receive_bulk'", "file:/usr/local/bin/logstash-1.1.9-monolithic.jar!/logstash/outputs/elasticsearch_http.rb:65:in `receive'", "file:/usr/local/bin/logstash-1.1.9-monolithic.jar!/logstash/outputs/base.rb:55:in `handle'", "file:/usr/local/bin/logstash-1.1.9-monolithic.jar!/logstash/agent.rb:758:in `run_output'", "file:/usr/local/bin/logstash-1.1.9-monolithic.jar!/logstash/agent.rb:379:in `start_output'"], :level=>:warn}
{:message=>"SIGTERM received, shutting down.", :level=>:warn}