Mongodb Hello World problem and messaging

[Alexander Makarenko]

Hello

I want to say that simple Hello World app is not working with the mongodb service + .net driver. So probably mongodb is not a choice for deployment.

 Unhandled Exception: System.IO.EndOfStreamException: Attempted to read past the end of the stream.

    at MongoDB.Bson.IO.BsonBuffer.LoadFrom(Stream stream, Int32 count) in C:\build\mongo-csharp-driver\Bson\IO\BsonBuffer.cs:line 310

    at MongoDB.Bson.IO.BsonBuffer.LoadFrom(Stream stream) in C:\build\mongo-csharp-driver\Bson\IO\BsonBuffer.cs:line 280

    at MongoDB.Driver.Internal.MongoConnection.ReceiveMessage[TDocument](BsonBinaryReaderSettings readerSettings, IBsonSerializationOptions serializationOptions) in C:\build\mongo-csharp-driver\Driver\Internal\MongoConnection.cs:line 475

    at MongoDB.Driver.Internal.MongoConnection.SendMessage(MongoRequestMessage message, WriteConcern writeConcern, String databaseName) in C:\build\mongo-csharp-driver\Driver\Internal\MongoConnection.cs:line 536

    at MongoDB.Driver.MongoCollection.InsertBatch(Type nominalType, IEnumerable documents, MongoInsertOptions options) in C:\build\mongo-csharp-driver\Driver\Core\MongoCollection.cs:line 1179

    at MongoDB.Driver.MongoCollection.Insert(Type nominalType, Object document, MongoInsertOptions options) in C:\build\mongo-csharp-driver\Driver\Core\MongoCollection.cs:line 1012

    at MongoDB.Driver.MongoCollection.Insert(Type nominalType, Object document) in C:\build\mongo-csharp-driver\Driver\Core\MongoCollection.cs:line 996

    at MongoDB.Driver.MongoCollection.Insert[TNominalType](TNominalType document) in C:\build\mongo-csharp-driver\Driver\Core\MongoCollection.cs:line 960

    at MongoDB.Driver.MongoCollection`1.Insert(TDefaultDocument document) in C:\build\mongo-csharp-driver\Driver\Core\MongoCollection.cs:line 1856

    at test4.Program.Main(String[] args) in d:\Project\Cloud\temp\test4\test4\Program.cs:line 79

I have created mongodb based message exchange system to communicate between deployed apps but I can use other systems like rabbitmq. Will this service be included in the free plan? Maybe you know when.

Thanks,

Alex

[Eric Lee]

Thanks for letting us know about this problem.  We’ll definitely investigate it at some point but I’m not sure exactly when.

 

Eric

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[Eric Lee]

By the way, would it be possible for you to share the source code for this app somewhere so I can try to repro the problem?  Thanks!

 

Eric

 

From: Eric Lee [mailto:sain...@hotmail.com]
Sent: Monday, June 2, 2014 10:30 AM
To: 'ironf...@googlegroups.com'
Subject: RE: [ironfoundry] Mongodb Hello World problem and messaging

 

Thanks for letting us know about this problem.  We’ll definitely investigate it at some point but I’m not sure exactly when.

 

Eric

 

From: ironf...@googlegroups.com [mailto:ironf...@googlegroups.com] On Behalf Of Alexander Makarenko
Sent: Saturday, May 31, 2014 4:10 AM
To: ironf...@googlegroups.com
Subject: [ironfoundry] Mongodb Hello World problem and messaging

 

Hello

--

[Alexander Makarenko]

Hello Eric

I have attached the test project with manifest. It uses "mongoq" service name.

Thanks,

Alex

[Eric Lee]

Thanks, Alex.  I tried pushing your test app to beta.ironfoundry.me and it appears to work fine without crashing for me.  I pushed it multiple times and restarted it a couple of times without any crashes.  Did you get the call stack below from the CF logs?  Did you have any other apps also bound to the mongoq service?  I think that something you’re doing is causing the mongodb service instance to crash but I don’t know what that might be yet.

 

Eric

 

From: ironf...@googlegroups.com [mailto:ironf...@googlegroups.com] On Behalf Of Alexander Makarenko

Sent: Tuesday, June 3, 2014 3:41 AM
To: ironf...@googlegroups.com

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[Alexander Makarenko]

Yes Eric, the exception details are provided in the log

I have published this app again and when I investigate the log via "cf logs mongotest --recent" I see 

 Unhandled Exception: System.IO.EndOfStreamException: Attempted to read past the end of the stream.

Also I have this error with my other mongodb apps on Iron Foundry.

Thanks,

Alex

On Saturday, May 31, 2014 2:09:43 PM UTC+3, Alexander Makarenko wrote:

[Alexander Makarenko]

Hello

I just want to notify that I don't experience any problems with mongodb service anymore.

Thank you very much.

Alex

On Saturday, May 31, 2014 2:09:43 PM UTC+3, Alexander Makarenko wrote:

[Brian Button]

That's great news, Alex. 

What we did was to change a default configuration setting on the mongodb deployment that told it to restart the mongo process if it crashed. When it didn't restart, you got into a situation where the service broker was stuck, like you saw. By telling it to restart, it recovered its state, the service broker worked correctly, and all was well :)

Thanks again for helping us figure this out, Alex!

bab

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Brian Button

Product Manager, Application Services

Tier 3/CenturyLink Cloud

http://agileprogrammer.com

@brianbuttonxp