We have a durable function, which got timeout exception
problemid: Microsoft.Azure.WebJobs.Host.FunctionTimeoutException at Microsoft.Azure.WebJobs.Host.Executors.FunctionExecutor+<TryHandleTimeoutAsync>d__35.MoveNext
outerType: Microsoft.Azure.WebJobs.Host.FunctionTimeoutException
outerMessage: Timeout value of 02:00:00 was exceeded by function: Functions.MultiRecipientActivity
This app is running on App Service Plan (P1v2)
This is my host.json
{
"version": "2.0",
"logging": {
"applicationInsights": {
"samplingSettings": {
"isEnabled": true,
"excludedTypes": "Request"
}
}
},
"functionTimeout": "02:00:00",
"extensionBundle": {
"id": "Microsoft.Azure.Functions.ExtensionBundle",
"version": "[2.*, 3.0.0)"
}
}
Please help me resolve this problem.
outerMessage: Timeout value of 02:00:00 was exceeded by function: Functions.MultiRecipientActivity
If you are hosting the Azure Functions Project in a Dedicated App Service Plan or Premium plan and if timeout property is required more than the default (30 minutes) then it is recommended to use -1 value as mentioned in this MS Doc of Azure Functions Host Configuration.
I found the similar issue on the GitHub Repository of Azure Functions timeout issue were specifying the timeout property more than the default would fail but as recommended by Microsoft i.e., -1 (unbounded value) for that property is working pretty fine for many customers.
Syntax:
"functionTimeout": "-1"
The above-mentioned timeout property will be applied on the host.json file for the .csx functions (Functions created in the portal environment) and for remaining types of Function projects like C# Class libraries, we can use the timeout property in Function code declaration level:
[Timeout("-1")]
[Function("Your_Function_Name")]
{
xxxxxxx
}
Also, update the extensionBundle to the recent version which makes the functions bindings to right compatibility, replace "version": "[2.*, 3.0.0)" to "version": "[3.3.0, 4.0.0)".
Related
I have tried so many things to do this and nothing works, but when I run my Azure function I get all these logs its far too much noise
What is the correct way to get rid of them once and for all?
I have this in my host.json
"logging": {
"logLevel": {
"default": "Information",
"Microsoft": "Warning",
"System": "Warning",
"Host": "Error",
"Function": "Error",
"Host.Aggregator": "Information"
},
"Serilog": {
"MinimumLevel": "Information",
"WriteTo": [
{
"Name": "Console",
"Args": {
"outputTemplate": "{Timestamp:HH:mm:ss} {Level} | {RequestId} - {Message}{NewLine}{Exception}"
}
}
]
}
},
and this is in my localsettings.json
"logging": {
"logLevel": {
"Microsoft.Azure.WebJobs.Script.WebHost.Middleware.SystemTraceMiddleware": "Error",
"Worker.rpcWorkerProcess": "Error"
}
},
You have to modify the host.json for configuring minimum level of logs either locally or in Azure Cloud.
I can see you have defined the log values as Information, Warning to the Log Level attributes where information gives the general flow of the Application Execution from Start to End like Host level flow, Application-Level Flow logs.
Host.Aggregator generates more than the trace level metrics if assigned with the value of Information.
You have to remove/disable the unnecessary modules which are not required for logs or keep that modules log level to None if not required for the current situation and change the log level to minimum which also reduces your Logs Consumption if deployed to Azure Cloud.
I found a similar SO Issue 70690850 that shows the minimum log levels should be modified in the host.json which reduces the number of logs both locally and given the techniques of Application Insights and this MS Doc for more information on Log Levels Configuration.
We are currently running load tests on our Azure Function App but the throughput is not what we expected.
There are multiple functions in the Function App but the ones with the most traffic are one with an Event Hub Trigger and one with a Service Bus Trigger consuming messages from a Session-Enabled Queue.
When the system is under load, Messages in the Session-Enabled Queue wait for up to 10 Minutes in the queue until they get processed by the consuming Function.
I know there are some settings in host.json to tune this behavior but it's still far from what we expect.
This is our host.json
{
"version": "2.0",
"logging": {
"applicationInsights": {
"samplingSettings": {
"isEnabled": true,
"excludedTypes": "Request"
}
}
},
"extensions": {
"serviceBus": {
"prefetchCount": 100,
"sessionHandlerOptions": {
"autoComplete": true,
"messageWaitTimeout": "00:00:30",
"maxAutoRenewDuration": "00:55:00",
"maxConcurrentSessions": 200
},
"batchOptions": {
"maxMessageCount": 1000,
"operationTimeout": "00:01:00",
"autoComplete": true
}
}
}
}
So i would expect the Function App to process up to 200 Sessions concurrently but in fact, although the Function Runtime provisions lots of instances, most of them seem to sit there and idle out. So to me it seems there is still another setting limiting the througput of the Function App.
I know it would improve performance if we would split the functions to separate Function Apps but as the load on the both functions is quite similar my plan was to postpone this step to a later stage and still get acceptable throughput with a single Function App.
We are using Azure Functions 3 on .NET Core 3.1 with
Microsoft.Azure.Functions.Extensions 1.1.0
Microsoft.Azure.WebJobs.Extensions.ServiceBus 5.0.0
Microsoft.Azure.WebJobs.Extensions.EventHubs 5.0.0
on a Windows Consumption Plan.
Thank you for any hints on how to achieve acceptable throughput.
I figured out that handling Batch Messages (receiving ServiceBusMessage[] instead of single instances) in the ServiceBus-Triggered Function along with enabled Sessions has a massively negative impact on scalability.
After changing this to single instances, the behavior of the system was as expected and the sessionHandlerOptions in host.json were respected.
I am wondering though what's the reason for this. I guess it could be related to the circumstance that Azure Function Instances lease a number of sessions from Service Bus to process but could not find anything in the documentation on that.
I am using a Function app with cosmos DB trigger, when running locally, the behavior is very strange as I stop receiving events randomly, like if the connection to the Lease collection drops. I am getting an error message that says a read operation fails to Blob storage, but not sure if this is related. Here's the error:
There was an error performing a read operation on the Blob Storage Secret Repository.
Please ensure the 'AzureWebJobsStorage' connection string is valid
I am running the function app with this code: func host start --cors * --verbose
And here's the CosmosDBOptions object I can see in the console:
[2021-02-09T16:17:58.305Z] CosmosDBOptions
[2021-02-09T16:17:58.307Z] {
[2021-02-09T16:17:58.307Z] "ConnectionMode": null,
[2021-02-09T16:17:58.308Z] "Protocol": null,
[2021-02-09T16:17:58.309Z] "LeaseOptions": {
[2021-02-09T16:17:58.310Z] "CheckpointFrequency": {
[2021-02-09T16:17:58.310Z] "ExplicitCheckpoint": false,
[2021-02-09T16:17:58.311Z] "ProcessedDocumentCount": null,
[2021-02-09T16:17:58.311Z] "TimeInterval": null
[2021-02-09T16:17:58.312Z] },
[2021-02-09T16:17:58.313Z] "FeedPollDelay": "00:00:05",
[2021-02-09T16:17:58.313Z] "IsAutoCheckpointEnabled": true,
[2021-02-09T16:17:58.314Z] "LeaseAcquireInterval": "00:00:13",
[2021-02-09T16:17:58.314Z] "LeaseExpirationInterval": "00:01:00",
[2021-02-09T16:17:58.315Z] "LeasePrefix": null,
[2021-02-09T16:17:58.316Z] "LeaseRenewInterval": "00:00:17"
[2021-02-09T16:17:58.316Z] }
[2021-02-09T16:17:58.323Z] }
and my host.json file:
{
"version": "2.0",
"logging": {
"applicationInsights": {
"samplingSettings": {
"isEnabled": true,
"excludedTypes": "Request"
}
}
},
"extensionBundle": {
"id": "Microsoft.Azure.Functions.ExtensionBundle",
"version": "[1.*, 2.0.0)"
}
}
Finally, that issue started since I added a shared folder, not sure if it's related but it's really annoying, deleting leases collection solves temporary the problem but It costs a lot of time and all the other running functions break because I clean all the collection.
TLDR; Using the CosmosDB emulator for local development solves this issue, as you won't have two functions pointing to the same lease collection.
There are two important points:
If you have one Azure Function deployed on Azure and one running locally in your machine with the same lease configuration listening for changes in the same monitored collection then these will behave as multiple instances of the same deployment and changes will be delivered to one or the other and you might experience "event loss" on the one running in Azure. This is documented in https://learn.microsoft.com/en-us/azure/cosmos-db/troubleshoot-changefeed-functions#some-changes-are-missing-in-my-trigger. If you want to have 2 independent Functions listening for changes in the same monitored collection, sharing the same lease collection, you need to use the LeaseCollectionPrefix configuration https://learn.microsoft.com/en-us/azure/cosmos-db/how-to-create-multiple-cosmos-db-triggers
The error you are seeing locally is potentially related to either not having the Azure Storage emulator running or not configuring the AzureWebJobsStorage configuration locally to use it. Azure Functions runtime (regardless of the Cosmos DB Trigger) requires a storage account. You can use UseDevelopmentStorage=true for the local storage emulator.
With below mentioned host.json, we see that function timeout is set to default of 30 mins. Some of our workflows run beyond 30 mins. This was working in runtime ~2. Also by checking the logs from host startup, there is no way to see the timeout value picked by the runtime. Is it logged ?
{
"version": "2.0",
"functionTimeout": "02:00:00",
"logging": {
"logLevel": {
"Default": "Debug"
}
}
}
The host.json is correct, the version is just for the schema.
I just had a similar issue, and it turns out registering IConfiguration as a singleton re-instates the default values.
So do not do this in Startup.cs:
builder.Services.AddSingleton<IConfiguration>(config);
I have a v.2 Service Bus Trigger function which, when I attempt to start, throws the following exception:
System.InvalidOperationException
HResult=0x80131509
Message=The host has not yet started.
Source=Microsoft.Azure.WebJobs.Host
StackTrace:
at Microsoft.Azure.WebJobs.JobHost.StopAsync() in C:\projects\azure-webjobs-sdk-rqm4t\src\Microsoft.Azure.WebJobs.Host\JobHost.cs:line 121
at Microsoft.Azure.WebJobs.Hosting.JobHostService.StopAsync(CancellationToken cancellationToken) in C:\projects\azure-webjobs-sdk-rqm4t\src\Microsoft.Azure.WebJobs.Host\Hosting\JobHostService.cs:line 32
at Microsoft.Extensions.Hosting.Internal.Host.<StopAsync>d__10.MoveNext()
I've searched around but cannot find anyone with a similar issue (and fix). I'm running VS 15.8.7 with all extensions and packages updated.
Here's what my function looks like:
[FunctionName("ServiceBusListenerFunction")]
public static void Run([ServiceBusTrigger("myTopic", "MySubscription", Connection = "MyConnection")]string mySbMsg, ILogger log)
{
log.LogInformation($"C# ServiceBus topic trigger function processed message: {mySbMsg}");
}
And here's my local.settings.json:
{
"IsEncrypted": false,
"Values": {
"FUNCTIONS_WORKER_RUNTIME": "dotnet",
"MyConnection": "UseDevelopmentStorage=true",
"AzureWebJobsStorage": "UseDevelopmentStorage=true",
"AzureWebJobsDashboard": "UseDevelopmentStorage=true"
},
"Host": {
"LocalHttpPort": 7077
}
}
I also tried doing the following in launchSettings.json, but it didn't help:
{
"profiles": {
"MyProject": {
"commandName": "Project",
"executablePath": "C:\\Users\\[myUserName\\AppData\\Roaming\\npm\\node_modules\\azure-functions-core-tools\\bin\\func.dll",
"commandLineArgs": "host start --port 7077"
}
}
}
I have Service Bus Explorer running and have created the above-named topic and subscription on it. The project in which the functions are located is built against .NET Standard 2.0.
Please let me know if you have any suggestions or need additional information.
EDIT: I grabbed the red exception text that appears briefly in the console window before it closes (which happens right before I get the above exception), and it reads:
Host initialized
A host error has occurred
System.Private.Uri: Value cannot be null
Parameter name: uriString
Stopping job host
Searching on this, I found this, but it doesn't seem as though I should have to change the attribute to get this working.
Thanks in advance for any help.
Problem is caused by this setting
"MyConnection": "UseDevelopmentStorage=true"
UseDevelopmentStorage=true represents Storage emulator connection string, for a Service Bus trigger, use Service Bus connection string(same one used in Service Bus Explorer or find it in Azure portal).
Some improvements:
In local.settings.json, LocalHttpPort somehow doesn't work in VS, you can remove it as commandLineArgs in launchSettings.json works as expected.
AzureWebJobsDashboard is not required now, so it can be deleted without special purpose.
In launchSettings.json, remove executablePath which is invalid as well. Usually we don't need this setting as VS use latest CLI by default.
One of the ways, I sorted the issue by removing the connection string from the [ServiceBusTrigger] and inserting it through local.settings.json.
in the function file.
[ServiceBusTrigger("Your-Topics-Name", "SubscriptionName",Connection = "MyServiceBus")]
Inside the local.settings.json.
{
"IsEncrypted": false,
"Values": {
"AzureWebJobsStorage": "UseDevelopmentStorage=true",
"AzureWebJobsMyServiceBus": "your connection string",
"FUNCTIONS_WORKER_RUNTIME": "dotnet"
}
}
note: connection string name start with the "AzureWebJobs" so you can put the remaining as the name.
In my case, it was just to update the version of Microsoft.Azure.WebJobs.Extensions.ServiceBus from 4.7.x to 5.x.x, and that's it :-)
I had to install Azure Functions Core Tools. It includes a version of the same runtime that powers Azure Functions runtime that you can run on your local development computer. It also provides commands to create functions, connect to Azure, and deploy function projects.
In my case the problem was the Platform target, change it to Any CPU instead of x86
I solve the issue by updating all the packages. I had sold packages that were incompatible with a recent package I installed.