title: Azure Stream Analytics reference input cannot read from Storage blob
body: <p>We are trying to create a Storage reference input for Azure Stream Analytics job and all the configuration and the test goes well, however when we try to use it in a Query, we get the following messages in the portal UI: "While sampling data, no data was received from '1' partitions." and "No data was found for preview from 'refinput'. Make sure the input has recently received data and  the correct format of those events has been selected." It is a CSV file that we have uploaded in the storage account and it is static data that doesn't change. The blob is a valid CSV and can be downloaded and opened in Excel without problems.</p>
  
  <p>Any ideas on what the issue can be?</p>