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到mongodb中的表中。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？请帮我。
您需要检查您在设置连接时给出的每个主机的连接值是多少（查看例外情况，我认为您会将其设置为 500）。
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，但您需要确保您设置的值不应超过打开 mongo shell 并执行以下命令可以拥有的连接数：
db.serverStatus().connections.available
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