About Azure Functions maxDequeueCount in host.json

Question

Hi,

I'm using Azure Functions (Python) and configuring to executed the function just once so that it terminates and send the message to poison queue.

I'm setting maxDequeueCount to one, but it won't work. This is my host.json file

{
  "version": "2.0",
  "logging": {
    "applicationInsights": {
      "samplingSettings": {
        "isEnabled": true,
        "excludedTypes": "Request"
      }
    }
  },
  "extensionBundle": {
    "id": "Microsoft.Azure.Functions.ExtensionBundle",
    "version": "[4.*, 6.0.0)"
  },
  "extensions": {
    "eventHubs": {
        "maxEventBatchSize" : 500,
        "minEventBatchSize" : 200,
        "maxWaitTime" : "00:0:05",
        "clientRetryOptions":{
            "mode" : "exponential",
            "tryTimeout" : "00:01:00",
            "delay" : "00:00:00.80",
            "maximumDelay" : "00:01:00",
            "maximumRetries" : 1
        }
    },
    "queues": {
      "maxPollingInterval": "00:00:02",
      "visibilityTimeout" : "00:00:30",
      "batchSize": 16,
      "maxDequeueCount": 1,
      "newBatchThreshold": 8,
      "messageEncoding": "base64"
    }
  }
}

The message from the local console debugging is telling me that it tries 5 times before sending the message to poison queue.

Regards

Jona