Weird error message on syntax error

[clintongormley]

Hiya

When trying this request (which I know is incorrect) it returns a good error message to my client, but logs a weird error message in the logs:

# [Tue Apr 19 11:16:36 2011] Protocol: http, Server: 192.168.5.103:9200
curl -XPOST 'http://127.0.0.1:9200/_aliases?pretty=1'  -d '
{
   "actions" : [
      {
         "add" : [
            "foo",
            "bar"
         ]
      }
   ]
}
'

# [Tue Apr 19 11:16:36 2011] Response:
# {
#    "status" : 500,
#    "error" : "ElasticSearchIllegalArgumentException[Alias action 
# >    [add] requires an [index] to be set]"
# }

Weird error in logs:

[2011-04-19 11:16:36,498][WARN ][http.netty               ] [Dweller-in-Darkness] Caught exception while handling client http traffic, closing connection
java.lang.IllegalStateException: cannot send more responses than requests
    at org.elasticsearch.common.netty.handler.codec.http.HttpContentEncoder.writeRequested(HttpContentEncoder.java:102)
    at org.elasticsearch.common.netty.channel.SimpleChannelHandler.handleDownstream(SimpleChannelHandler.java:266)
    at org.elasticsearch.common.netty.channel.DefaultChannelPipeline.sendDownstream(DefaultChannelPipeline.java:568)
    at org.elasticsearch.common.netty.channel.DefaultChannelPipeline.sendDownstream(DefaultChannelPipeline.java:563)
    at org.elasticsearch.common.netty.channel.Channels.write(Channels.java:611)
    at org.elasticsearch.common.netty.channel.Channels.write(Channels.java:578)
    at org.elasticsearch.common.netty.channel.AbstractChannel.write(AbstractChannel.java:259)
    at org.elasticsearch.http.netty.NettyHttpChannel.sendResponse(NettyHttpChannel.java:118)
    at org.elasticsearch.rest.action.admin.indices.alias.RestIndicesAliasesAction$1.onFailure(RestIndicesAliasesAction.java:131)
    at org.elasticsearch.action.support.BaseAction$ThreadedActionListener$2.run(BaseAction.java:95)
    at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
    at java.lang.Thread.run(Thread.java:662)