我该如何解决MongoWaitQueueFullException？
我运行一个java程序，它是一个线程执行程序，它将数千个文档插入mongodb中的表。 我收到以下错误
Exception in thread "pool-1-thread-301" com.mongodb.MongoWaitQueueFullException: Too many threads are already waiting for a connection. Max number of threads (maxWaitQueueSize) of 500 has been exceeded. at com.mongodb.PooledConnectionProvider.get(PooledConnectionProvider.java:70) at com.mongodb.DefaultServer.getConnection(DefaultServer.java:73) at com.mongodb.BaseCluster$WrappedServer.getConnection(BaseCluster.java:221) at com.mongodb.DBTCPConnector$MyPort.getConnection(DBTCPConnector.java:508) at com.mongodb.DBTCPConnector$MyPort.get(DBTCPConnector.java:456) at com.mongodb.DBTCPConnector.getPrimaryPort(DBTCPConnector.java:414) at com.mongodb.DBCollectionImpl.insert(DBCollectionImpl.java:176) at com.mongodb.DBCollectionImpl.insert(DBCollectionImpl.java:159) at com.mongodb.DBCollection.insert(DBCollection.java:93) at com.mongodb.DBCollection.insert(DBCollection.java:78) at com.mongodb.DBCollection.insert(DBCollection.java:120) at ScrapResults103$MyRunnable.run(MyProgram.java:368) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:895) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:918) at java.lang.Thread.run(Thread.java:695) 我该如何解决这个问题？ 请帮帮我。
您需要检查在设置连接时给出的每个主机值的连接数（查看我认为您将其设置为500的exception）。
MongoClientOptions.Builder builder = new MongoClientOptions.Builder(); builder.connectionsPerHost(200); MongoClientOptions options = builder.build(); mongoClient = new MongoClient(URI, connectionOptions);
设置每个主机的连接的理想方法是通过反复试验，但是您需要确保您设置的值不应超过打开mongo shell并执行以下的连接数：
db.serverStatus（）。connections.available
你在maxWaitQueueSize限制，所以增加乘数;）
MongoClientOptions options = MongoClientOptions.builder() .threadsAllowedToBlockForConnectionMultiplier(10) .build(); MongoClient mongo = new MongoClient("127.0.0.1:27017", options); //run 2000 threads and use database ;)