title: AWS S3 storage and schema
body: <p>I have an IOT sensor which sends the following message to IoT MQTT Core topic:</p>
  
  <pre><code>{"ID1":10001,"ID2":1001,"ID3":101,"ValueMax":123}
  </code></pre>
  
  <p>I have added ACT/RULE which stores the incoming message in an S3 Bucket with the timestamp as a key(each message is stored as a seperate file/row in the bucket).</p>
  
  <p>I have only worked with SQL databases before, so having them stored like this is new to me. </p>
  
  <p>1) Is this the proper way to work with S3 storage?</p>
  
  <p>2) How can I visualize the values in a schema instead of separate files?</p>
  
  <p>3) I am trying to create ML Datasource from the S3 Bucket, but get the error below when Amazon ML tries to create schema: </p>
  
  <blockquote>
    <p>"Amazon ML can't retrieve the schema. If you've just created this
    datasource, wait a moment and try again."</p>
  </blockquote>
  
  <p>Appreciate all advice there is! </p>