The requested name is valid, but no data of the requested type was found while connecting to Azure blob

Question

I am getting the 3 Exceptions below when downloading a .csv file from Azure Data lake storage gen 2 from VM machine

Inner Exception 1:
StorageException: The requested name is valid, but no data of the requested type was found.

Inner Exception 2:
HttpRequestException: The requested name is valid, but no data of the requested type was found.

Inner Exception 3:
SocketException: The requested name is valid, but no data of the requested type was found.

Here it is the code I written to download the file

public static string[] downloadContentsFromBlob(string blobAccountName, string blobAccountKey, string containerName, string blobFileName, string blobStoragePath)
{
Console.WriteLine("Inside download contents from Blob()");

   //string path = Path.Combine(Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location), "TestData/Downloads/");  

   string connectionString = $"DefaultEndpointsProtocol=https;AccountName=" + blobAccountName + ";AccountKey=" + blobAccountKey + ";EndpointSuffix=core.windows.net";  

   // Setup the connection to the storage account  

   CloudStorageAccount storageAccount = CloudStorageAccount.Parse(connectionString);  

   // Connect to the blob storage  

   Microsoft.WindowsAzure.Storage.Blob.CloudBlobClient serviceClient = storageAccount.CreateCloudBlobClient();  

   // Connect to the blob container  

   Microsoft.WindowsAzure.Storage.Blob.CloudBlobContainer container = serviceClient.GetContainerReference($"{containerName}");  

   // Connect to the blob file  

   Microsoft.WindowsAzure.Storage.Blob.CloudBlockBlob blob = container.GetBlockBlobReference($"{blobStoragePath + blobFileName}");  


   // provide the file download location below              
   string contents = blob.DownloadTextAsync().Result;  

   Console.WriteLine("Contents from Blob has been Downloaded!");  

   return ConvertStringToStringArray(contents);

}

Answer

Hi Ravi,

The Socket error points to some sort of DNS or A Record issue. Chekc the Virtual tags and services service-tags-overview

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Answer

Thanks a lot for your reply Jimmy.
Solution :: Installed Azure storage explorer in VM Machine and tried to access CSV files in Azure blob.
Got the error while accessing files which was fixed by infra team.
Then I am able to read Blob storage files using above mentioned code.

Thanks

The requested name is valid, but no data of the requested type was found while connecting to Azure blob

2 answers