在我的系统中，我目前有两个节点都运行Ubuntu 14.04和elasticsearch 1.5.2，一个是组合的主节点和数据节点，另一个是客户端节点，设置如下：
主节点：
http.enabled: true
node.data: true
node.master: true
cluster.name: mvtest
客户端节点：
http.enabled: true
node.data: false
node.master: false
cluster.name: mvtest
所有其他设置均为ES 1.5.2默认值。当我尝试发布到_msearch端点时，使用如下文件：
{}
{“query”: {“multi_match”: {“operator”:”and”, “query”: “1”, “fields”: [“_id”]}}}
{}
{“query”: {“multi_match”: {“operator”:”and”, “query”: “2”, “fields”: [“_id”]}}}
{}
{“query”: {“multi_match”: {“operator”:”and”, “query”: “3”, “fields”: [“_id”]}}}
…
{}
{“query”: {“multi_match”: {“operator”:”and”, “query”: “999”, “fields”: [“_id”]}}}
{}
{“query”: {“multi_match”: {“operator”:”and”, “query”: “1000”, “fields”: [“_id”]}}}
我在表格的日志中收到了很多错误：
[2015-05-20 18:57:22,150][DEBUG][action.search.type ] [master] [genedoc_mygene_allspecies_current_1][8], node[4ara0M7SReSEPKrZM2g5Gg], [P], s[STARTED]: Failed to execute [org.elasticsearch.action.search.SearchRequest@5104e7e5] lastShard [true]
org.elasticsearch.common.util.concurrent.EsRejectedExecutionException: rejected execution (queue capacity 1500) on org.elasticsearch.search.action.SearchServiceTransportAction$23@18e20fd8
at org.elasticsearch.common.util.concurrent.EsAbortPolicy.rejectedExecution(EsAbortPolicy.java:62)
at java.util.concurrent.ThreadPoolExecutor.reject(ThreadPoolExecutor.java:821)
at java.util.concurrent.ThreadPoolExecutor.execute(ThreadPoolExecutor.java:1372)
at org.elasticsearch.common.util.concurrent.EsThreadPoolExecutor.execute(EsThreadPoolExecutor.java:79)
at org.elasticsearch.search.action.SearchServiceTransportAction.execute(SearchServiceTransportAction.java:551)
at org.elasticsearch.search.action.SearchServiceTransportAction.sendExecuteQuery(SearchServiceTransportAction.java:228)
at org.elasticsearch.action.search.type.TransportSearchQueryThenFetchAction$AsyncAction.sendExecuteFirstPhase(TransportSearchQueryThenFetchAction.java:83)
at org.elasticsearch.action.search.type.TransportSearchTypeAction$BaseAsyncAction.performFirstPhase(TransportSearchTypeAction.java:176)
at org.elasticsearch.action.search.type.TransportSearchTypeAction$BaseAsyncAction.start(TransportSearchTypeAction.java:158)
at org.elasticsearch.action.search.type.TransportSearchQueryThenFetchAction.doExecute(TransportSearchQueryThenFetchAction.java:62)
at org.elasticsearch.action.search.type.TransportSearchQueryThenFetchAction.doExecute(TransportSearchQueryThenFetchAction.java:52)
at org.elasticsearch.action.support.TransportAction.execute(TransportAction.java:75)
at org.elasticsearch.action.search.TransportSearchAction.doExecute(TransportSearchAction.java:100)
at org.elasticsearch.action.search.TransportSearchAction.doExecute(TransportSearchAction.java:43)
at org.elasticsearch.action.support.TransportAction.execute(TransportAction.java:75)
at org.elasticsearch.action.search.TransportMultiSearchAction.doExecute(TransportMultiSearchAction.java:62)
at org.elasticsearch.action.search.TransportMultiSearchAction.doExecute(TransportMultiSearchAction.java:39)
at org.elasticsearch.action.support.TransportAction.execute(TransportAction.java:75)
at org.elasticsearch.client.node.NodeClient.execute(NodeClient.java:98)
at org.elasticsearch.client.FilterClient.execute(FilterClient.java:66)
at org.elasticsearch.rest.BaseRestHandler$HeadersAndContextCopyClient.execute(BaseRestHandler.java:92)
at org.elasticsearch.client.support.AbstractClient.multiSearch(AbstractClient.java:364)
at org.elasticsearch.rest.action.search.RestMultiSearchAction.handleRequest(RestMultiSearchAction.java:66)
at org.elasticsearch.rest.BaseRestHandler.handleRequest(BaseRestHandler.java:53)
at org.elasticsearch.rest.RestController.executeHandler(RestController.java:225)
at org.elasticsearch.rest.RestController.dispatchRequest(RestController.java:170)
at org.elasticsearch.http.HttpServer.internalDispatchRequest(HttpServer.java:121)
at org.elasticsearch.http.HttpServer$Dispatcher.dispatchRequest(HttpServer.java:83)
at org.elasticsearch.http.netty.NettyHttpServerTransport.dispatchRequest(NettyHttpServerTransport.java:329)
at org.elasticsearch.http.netty.HttpRequestHandler.messageReceived(HttpRequestHandler.java:63)
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$DefaultChannelHandlerContext.sendUpstream(DefaultChannelPipeline.java:791)
at org.elasticsearch.http.netty.pipelining.HttpPipeliningHandler.messageReceived(HttpPipeliningHandler.java:60)
at org.elasticsearch.common.netty.channel.SimpleChannelHandler.handleUpstream(SimpleChannelHandler.java:88)
at org.elasticsearch.common.netty.channel.DefaultChannelPipeline.sendUpstream(DefaultChannelPipeline.java:564)
at org.elasticsearch.common.netty.channel.DefaultChannelPipeline$DefaultChannelHandlerContext.sendUpstream(DefaultChannelPipeline.java:791)
at org.elasticsearch.common.netty.channel.Channels.fireMessageReceived(Channels.java:296)
at org.elasticsearch.common.netty.handler.codec.http.HttpChunkAggregator.messageReceived(HttpChunkAggregator.java:194)
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: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)
有趣的是，当我在主节点上使用_msearch端点时，查询会返回，但这些错误会填满日志。当我使用相同的查询在客户端节点上使用_msearch端点时，它通常（但不总是）触发超时，然后用这些错误填充日志。
我认为它必须与线程池队列有关，但在阅读ES文档后，我不知道如何解决这个问题。我试图使用type：cached取消绑定搜索队列，并尝试更改搜索队列大小，但都无济于事。但是，当我取消绑定队列时，错误将更改为TransportService not closed错误。
我对弹性搜索仍然很陌生，所以我希望有人会对这里发生的事情有所了解。
非常感谢，如果我忘记了相关背景信息，请告诉我。