Amazon web services 获取com.amazonaws.AmazonClientException:无法解组响应（读取超时）

我得到以下例外。有人能告诉我为什么会这样吗

 AmazonEC2Client ec2Client = AWSEC2Client.getAWSEC2Client(set basicCredentials :: accesskey and secret key);

 ec2Client.setRegion(set regions);

 final ClientConfiguration clientConfiguration = new ClientConfiguration()
                .withConnectionTimeout(150000).withMaxConnections(200)
                .withRetryPolicy(new RetryPolicy(null, null, 3, true));

 describeInstancesResult = ec2Client.describeInstances(new DescribeInstancesRequest().withFilters(filterList));

#011at com.amazonaws.services.ec2.AmazonEC2Client.descripbeinstances（AmazonEC2Client.java:5392）~[aws-java-sdk-ec2-1.10.54.jar:na] #011at com.amazonaws.services.ec2.AmazonEC2Client.invoke（AmazonEC2Client.java:11095）~[aws-java-sdk-ec2-1.10.54.jar:na] #011at com.amazonaws.http.AmazonHttpClient.execute（AmazonHttpClient.java:311）~[aws-java-sdk-core-1.10.54.jar:na] #011at com.amazonaws.http.AmazonHttpClient.executeWithTimer（AmazonHttpClient.java:362）~[aws-java-sdk-core-1.10.54.jar:na] #011at com.amazonaws.http.AmazonHttpClient.doExecute（AmazonHttpClient.java:400）~[aws-java-sdk-core-1.10.54.jar:na] #011at com.amazonaws.http.AmazonHttpClient.executeHelper（AmazonHttpClient.java:631）~[aws-java-sdk-core-1.10.54.jar:na] #011at com.amazonaws.http.AmazonHttpClient.executeOneRequest（AmazonHttpClient.java:893）~[aws-java-sdk-core-1.10.54.jar:na] #011at com.amazonaws.http.AmazonHttpClient.handleResponse（AmazonHttpClient.java:1281）~[aws-java-sdk-core-1.10.54.jar:na] com.amazonaws.AmazonClientException:无法解组响应（读取超时）。响应代码：200，响应文本：OK

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我可以使用withClientExecutionTimeout或.withRequestTimeout（requestTimeout）方法。如果是，我应该使用什么值进行测试。如果得到相同的错误，则不知道根本原因。