Multiple blob operations per minute

Jørgen Nygaard 1 Reputation point

I've set up a Function app for sending incoming messages from IoT Hub to a CosmosDB. Everything works fine and the data is stored in a table. However, even if the function is not triggered, I exceed for "Storage, Tiered Block Blob, Hot Read Operations" by over 1000% as shown below.

Tried digging into it by looking at logs for the Storage account after talking with someone from the billing support team.
Found multiple blob operations happening per minute and I have no idea why. Is this normal? All of them have the same request URL:

Azure Functions
Azure Functions
An Azure service that provides an event-driven serverless compute platform.
3,998 questions
Azure Blob Storage
Azure Blob Storage
An Azure service that stores unstructured data in the cloud as blobs.
2,272 questions
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  1. Pramod Valavala 20,501 Reputation points Microsoft Employee

    @Anonymous The EventProcessorHost which powers the Azure Functions extension uses a storage account to track ownership of partitions which I believe are the calls being made.

    This is required since you could have multiple instances processing from the same consumer group and to load balance partitions among them.