从突然发生的java.lang.IllegalStateException中获取此错误：无法执行请求；I/O反应器状态：停止

我正在使用httpcore-nio-4.4.5.jar。我正在使用elasticsearch RestHighLevelClient与我们的elasticsearch服务器交互。这一切工作正常，除了有一段时间我们突然发现I/O反应堆停止错误

一切似乎都很好。没有奇怪的行为

这就是我初始化ES客户端的方式

public synchronized RestHighLevelClient getHighLevelClient() throws ManagerException {
        if (highLevelClient != null) {
            return highLevelClient;
        }

        Map<String, Integer> map = getEsServers(esAddresses);

        HttpHost[] hosts = new HttpHost[map.size()];

        int i = 0;

        for (Map.Entry<String, Integer> entry : map.entrySet()) {
            hosts[i++] = new HttpHost(entry.getKey(), entry.getValue(), "http");
            LOGGER.info(entry.getKey() + " " + entry.getValue());
        }

        RestClientBuilder restClientBuilder = RestClient.builder(hosts);
        highLevelClient = customizeHttpClient(restClientBuilder);
        return highLevelClient;
    }

所以基本上首先我得到了下面的stacktrace

java.lang.IllegalStateException: I/O reactor has been shut down
        at org.apache.http.util.Asserts.check(Asserts.java:34) 
        at org.apache.http.impl.nio.reactor.DefaultConnectingIOReactor.connect(DefaultConnectingIOReactor.java:224) 
        at org.apache.http.nio.pool.AbstractNIOConnPool.processPendingRequest(AbstractNIOConnPool.java:434) 
        at org.apache.http.nio.pool.AbstractNIOConnPool.lease(AbstractNIOConnPool.java:276) 
        at org.apache.http.impl.nio.conn.PoolingNHttpClientConnectionManager.requestConnection(PoolingNHttpClientConnectionManager.java:266) 
        at org.apache.http.impl.nio.client.AbstractClientExchangeHandler.requestConnection(AbstractClientExchangeHandler.java:363) 
        at org.apache.http.impl.nio.client.DefaultClientExchangeHandlerImpl.start(DefaultClientExchangeHandlerImpl.java:125) 
        at org.apache.http.impl.nio.client.InternalHttpAsyncClient.execute(InternalHttpAsyncClient.java:141) 
        at org.elasticsearch.client.RestClient.performRequestAsync(RestClient.java:346) 
        at org.elasticsearch.client.RestClient.performRequestAsync(RestClient.java:328) 
        at org.elasticsearch.client.RestClient.performRequestAsync(RestClient.java:271) 
        at org.elasticsearch.client.RestHighLevelClient.performRequestAsync(RestHighLevelClient.java:537) 
        at org.elasticsearch.client.RestHighLevelClient.performRequestAsyncAndParseEntity(RestHighLevelClient.java:515) 
        at org.elasticsearch.client.RestHighLevelClient.searchAsync(RestHighLevelClient.java:400) 

在这之后，没有超时，只会持续出现以下异常，直到我重新启动服务器

java.lang.IllegalStateException: Request cannot be executed; I/O reactor status: STOPPED
    at org.apache.http.util.Asserts.check(Asserts.java:46)  
    at org.apache.http.impl.nio.client.CloseableHttpAsyncClientBase.ensureRunning(CloseableHttpAsyncClientBase.java:90)  
    at org.apache.http.impl.nio.client.InternalHttpAsyncClient.execute(InternalHttpAsyncClient.java:123)  
    at org.elasticsearch.client.RestClient.performRequestAsync(RestClient.java:346)  
    at org.elasticsearch.client.RestClient.performRequestAsync(RestClient.java:328)  
    at org.elasticsearch.client.RestClient.performRequestAsync(RestClient.java:271)  
    at org.elasticsearch.client.RestHighLevelClient.performRequestAsync(RestHighLevelClient.java:537)  
    at org.elasticsearch.client.RestHighLevelClient.performRequestAsyncAndParseEntity(RestHighLevelClient.java:515)  
    at org.elasticsearch.client.RestHighLevelClient.searchAsync(RestHighLevelClient.java:400)  ```

---

我也面临同样的问题，结果证明我并没有关闭HighLevelRestClient

参考亨宁安徒生的回答：

这听起来像141。该问题中的问题是由在客户端应用程序代码中的onFailure方法中引发异常引起的。这将导致连接关闭，后续请求将失败，并在此处报告错误

我相信，如果使用通过ActionListener报告响应/失败的任何方法，这也会影响高级客户机（我认为所有这些方法的方法名称中都有后缀Async）

解决方法是确保您的onFailure方法不会抛出异常

---

你的客户在哪里运行？如何运行？可能重复@KalpeshSoni我已经尝试过了，在那里找不到任何东西。我更改了答案，我在pcf中遇到了相同的问题

java.lang.IllegalStateException: Request cannot be executed; I/O reactor status: STOPPED
    at org.apache.http.util.Asserts.check(Asserts.java:46)  
    at org.apache.http.impl.nio.client.CloseableHttpAsyncClientBase.ensureRunning(CloseableHttpAsyncClientBase.java:90)  
    at org.apache.http.impl.nio.client.InternalHttpAsyncClient.execute(InternalHttpAsyncClient.java:123)  
    at org.elasticsearch.client.RestClient.performRequestAsync(RestClient.java:346)  
    at org.elasticsearch.client.RestClient.performRequestAsync(RestClient.java:328)  
    at org.elasticsearch.client.RestClient.performRequestAsync(RestClient.java:271)  
    at org.elasticsearch.client.RestHighLevelClient.performRequestAsync(RestHighLevelClient.java:537)  
    at org.elasticsearch.client.RestHighLevelClient.performRequestAsyncAndParseEntity(RestHighLevelClient.java:515)  
    at org.elasticsearch.client.RestHighLevelClient.searchAsync(RestHighLevelClient.java:400)  ```