ElasticSearch：处理客户端http流量时异常，关闭连接

Question

我正在使用ElasticSearch 1.2.1，我收到此错误

[2014-08-28 09:16:47,785][WARN ][http.netty               ] [In-Betweener] Caught exception while handling client http traffic, closing connection [id: 0x5a731cf1, /127.0.0.1:55190 => /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: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.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:318)
    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:744)

任何原因。？