mongodb报错:com.mongodb.MongoSocketReadException: Exception receiving message

环境版本

mongodb版本：4.0.1
mongodb-driver: 3.6.4

问题描述

由于工作需要，线上mongodb中的部分集合需要添加一些新的字段。核心代码如下：

MongoCollection input = mongoDatabase.getCollection(inputCollection);
MongoCollection output = mongoDatabase.getCollection(outputCollection);

FindIterable findIterable = input.find()；
MongoCursor mongoCursor = findIterable.iterator();
 while(mongoCursor.hasNext()){
     Document outputDocument = new Document();
     Document document = mongoCursor.next();
     for (String key: document.keySet()) {
     //.........
     // 添加字段，具体不列出
         }
         outputDocument.append(key, document.get(key));
     }
     output.insertOne(outputDocument);
 }

在线上运行一段时间后，程序报出如下异常：

Exception in thread "main" com.mongodb.MongoSocketReadException: Exception receiving message
	at com.mongodb.internal.connection.InternalStreamConnection.translateReadException(InternalStreamConnection.java:543)
	at com.mongodb.internal.connection.InternalStreamConnection.receiveMessage(InternalStreamConnection.java:428)
	at com.mongodb.internal.connection.InternalStreamConnection.receiveCommandMessageResponse(InternalStreamConnection.java:289)
	at com.mongodb.internal.connection.InternalStreamConnection.sendAndReceive(InternalStreamConnection.java:255)
	at com.mongodb.internal.connection.UsageTrackingInternalConnection.sendAndReceive(UsageTrackingInternalConnection.java:99)
	at com.mongodb.internal.connection.DefaultConnectionPool$PooledConnection.sendAndReceive(DefaultConnectionPool.java:444)
	at com.mongodb.internal.connection.CommandProtocolImpl.execute(CommandProtocolImpl.java:72)
	at com.mongodb.internal.connection.DefaultServer$DefaultServerProtocolExecutor.execute(DefaultServer.java:200)
	at com.mongodb.internal.connection.DefaultServerConnection.executeProtocol(DefaultServerConnection.java:269)
	at com.mongodb.internal.connection.DefaultServerConnection.command(DefaultServerConnection.java:131)
	at com.mongodb.operation.MixedBulkWriteOperation.executeCommand(MixedBulkWriteOperation.java:418)
	at com.mongodb.operation.MixedBulkWriteOperation.executeBulkWriteBatch(MixedBulkWriteOperation.java:256)
	at com.mongodb.operation.MixedBulkWriteOperation.access$700(MixedBulkWriteOperation.java:67)
	at com.mongodb.operation.MixedBulkWriteOperation$1.call(MixedBulkWriteOperation.java:200)
	at com.mongodb.operation.MixedBulkWriteOperation$1.call(MixedBulkWriteOperation.java:191)
	at com.mongodb.operation.OperationHelper.withReleasableConnection(OperationHelper.java:419)
	at com.mongodb.operation.MixedBulkWriteOperation.execute(MixedBulkWriteOperation.java:191)
	at com.mongodb.operation.MixedBulkWriteOperation.execute(MixedBulkWriteOperation.java:67)
	at com.mongodb.client.internal.MongoClientDelegate$DelegateOperationExecutor.execute(MongoClientDelegate.java:193)
	at com.mongodb.client.internal.MongoCollectionImpl.executeSingleWriteRequest(MongoCollectionImpl.java:960)
	at com.mongodb.client.internal.MongoCollectionImpl.executeInsertOne(MongoCollectionImpl.java:494)
	at com.mongodb.client.internal.MongoCollectionImpl.insertOne(MongoCollectionImpl.java:478)
	at com.mongodb.client.internal.MongoCollectionImpl.insertOne(MongoCollectionImpl.java:472)
	at com.zhishen.TestJoin.main(TestJoin.java:83)
Caused by: java.net.SocketException: Connection reset
	at java.net.SocketInputStream.read(SocketInputStream.java:210)
	at java.net.SocketInputStream.read(SocketInputStream.java:141)
	at com.mongodb.internal.connection.SocketStream.read(SocketStream.java:89)
	at com.mongodb.internal.connection.InternalStreamConnection.receiveResponseBuffers(InternalStreamConnection.java:554)
	at com.mongodb.internal.connection.InternalStreamConnection.receiveMessage(InternalStreamConnection.java:425)

mongodb server与client建立的连接在出现一些连接失效(比如网络链路突然中断)时，client在默认情况下并不会主动回收这些连接，而当再次读写此连接时就会出现上述错误。

解决方案

MongoClientOptions.Builder builder = new MongoClientOptions.Builder();
builder.maxConnectionIdleTime(60000);//set the max wait time in (ms)
MongoClientOptions opts = builder.build();

重新打包运行，没有出现异常，问题解决。