Attempted to read past the end of the stream

Working with Data
,
1

Hi,

Sometimes when saving a record in the database I get the following error. I can’t figure out what’s causing the error because it only happens sometimes.

An exception occurred while receiving a message from the server.
Attempted to read past the end of the stream.
   at MongoDB.Driver.Core.Connections.BinaryConnection.ReceiveBuffer(CancellationToken cancellationToken)
   at MongoDB.Driver.Core.Connections.BinaryConnection.ReceiveBuffer(Int32 responseTo, CancellationToken cancellationToken)
--- End of stack trace from previous location ---
   at MongoDB.Driver.Core.Connections.BinaryConnection.ReceiveBuffer(Int32 responseTo, CancellationToken cancellationToken)
   at MongoDB.Driver.Core.Connections.BinaryConnection.ReceiveMessage(Int32 responseTo, IMessageEncoderSelector encoderSelector, MessageEncoderSettings messageEncoderSettings, CancellationToken cancellationToken)
   at MongoDB.Driver.Core.ConnectionPools.ExclusiveConnectionPool.PooledConnection.ReceiveMessage(Int32 responseTo, IMessageEncoderSelector encoderSelector, MessageEncoderSettings messageEncoderSettings, CancellationToken cancellationToken)
   at MongoDB.Driver.Core.ConnectionPools.ExclusiveConnectionPool.AcquiredConnection.ReceiveMessage(Int32 responseTo, IMessageEncoderSelector encoderSelector, MessageEncoderSettings messageEncoderSettings, CancellationToken cancellationToken)
   at MongoDB.Driver.Core.WireProtocol.CommandUsingCommandMessageWireProtocol`1.Execute(IConnection connection, CancellationToken cancellationToken)
   at MongoDB.Driver.Core.WireProtocol.CommandWireProtocol`1.Execute(IConnection connection, CancellationToken cancellationToken)
   at MongoDB.Driver.Core.Servers.Server.ServerChannel.ExecuteProtocol[TResult](IWireProtocol`1 protocol, ICoreSession session, CancellationToken cancellationToken)
   at MongoDB.Driver.Core.Servers.Server.ServerChannel.Command[TResult](ICoreSession session, ReadPreference readPreference, DatabaseNamespace databaseNamespace, BsonDocument command, IEnumerable`1 commandPayloads, IElementNameValidator commandValidator, BsonDocument additionalOptions, Action`1 postWriteAction, CommandResponseHandling responseHandling, IBsonSerializer`1 resultSerializer, MessageEncoderSettings messageEncoderSettings, CancellationToken cancellationToken)
   at MongoDB.Driver.Core.Operations.RetryableWriteCommandOperationBase.ExecuteAttempt(RetryableWriteContext context, Int32 attempt, Nullable`1 transactionNumber, CancellationToken cancellationToken)
   at MongoDB.Driver.Core.Operations.RetryableWriteOperationExecutor.Execute[TResult](IRetryableWriteOperation`1 operation, RetryableWriteContext context, CancellationToken cancellationToken)
   at MongoDB.Driver.Core.Operations.BulkUnmixedWriteOperationBase`1.ExecuteBatch(RetryableWriteContext context, Batch batch, CancellationToken cancellationToken)
   at MongoDB.Driver.Core.Operations.BulkUnmixedWriteOperationBase`1.ExecuteBatches(RetryableWriteContext context, CancellationToken cancellationToken)
   at MongoDB.Driver.Core.Operations.BulkUnmixedWriteOperationBase`1.Execute(RetryableWriteContext context, CancellationToken cancellationToken)
   at MongoDB.Driver.Core.Operations.BulkMixedWriteOperation.ExecuteBatch(RetryableWriteContext context, Batch batch, CancellationToken cancellationToken)
   at MongoDB.Driver.Core.Operations.BulkMixedWriteOperation.Execute(IWriteBinding binding, CancellationToken cancellationToken)
   at MongoDB.Driver.OperationExecutor.ExecuteWriteOperation[TResult](IWriteBinding binding, IWriteOperation`1 operation, CancellationToken cancellationToken)
   at MongoDB.Driver.MongoCollectionImpl`1.ExecuteWriteOperation[TResult](IClientSessionHandle session, IWriteOperation`1 operation, CancellationToken cancellationToken)
   at MongoDB.Driver.MongoCollectionImpl`1.BulkWrite(IClientSessionHandle session, IEnumerable`1 requests, BulkWriteOptions options, CancellationToken cancellationToken)
   at MongoDB.Driver.MongoCollectionImpl`1.UsingImplicitSession[TResult](Func`2 func, CancellationToken cancellationToken)
   at MongoDB.Driver.MongoCollectionImpl`1.BulkWrite(IEnumerable`1 requests, BulkWriteOptions options, CancellationToken cancellationToken)
   at MongoDB.Driver.MongoCollectionBase`1.ReplaceOne(FilterDefinition`1 filter, TDocument replacement, ReplaceOptions options, Func`3 bulkWrite)
   at MongoDB.Driver.MongoCollectionBase`1.ReplaceOne(FilterDefinition`1 filter, TDocument replacement, ReplaceOptions options, CancellationToken cancellationToken)
   at SOT.MongoDB.Extensions.MongoCollectionExtension.Update[T](IMongoCollection`1 pT, T pEntity)
3

Hi @Antonio_Moreira,

Welcome to the MongoDB Community forums :sparkles:

The error message "Attempted to read past the end of the stream" indicates that the program is trying to read data from a MongoDB server, but the data stream has ended unexpectedly.

Can you confirm if you see the pattern - might be related to the load on the database at certain times, like during the day or week. Have you checked your server logs? That might give us some clues as to the specific cause.

Please share the specific driver version you are using here. Also, what is the batch size of the documents you are inserting at once in the collection when this error throws?

Best,
Kushagra

4

Hi @Kushagra_Kesav ,

Thank you.

I’m iterating a list and for each iteration I write one documento to the database.
I’m using the following version

Regards,
Antonio Moreira

5

Hi @Antonio_Moreira,

Apologies for the late response, I think you missed putting information in your response. Could you please provide the version details so that the error can be reproduced accurately and reliably?

Best,
Kushagra

6

Hi, regarding the same exact problem I would like to add more information.

The application is being run on a AWS container and the MongoDB too.
When this error happens, this is the log that we get from Mongo:

{"t":{"$date":"2023-02-27T23:27:42.191+00:00"},"s":"I",  "c":"-",        "id":20883,   "ctx":"conn15697203","msg":"Interrupted operation as its client disconnected","attr":{"opId":290227564}}

This error keeps happening every 10/11 minutes until the end of the process.

It is also worth noticing that it never happens when running things locally.

Thanks in advance!
Best Regards,
Gustavo Jorge

7

Hi @Guga_Jorge,

In many cases, even though the message looks the same, the cause could be different. Can you please open a new thread and provide the required details for a better understanding of the question?

Also, kindly share the MongoDB version you are using.

Best,
Kushagra