To get the status of the upload, use the GET dataset API. The CURL command for request is as follows:

curl -X GET -H "Authorization: Bearer <accesstoken>" -H "Cache-Control: no-cache" https://api.einstein.ai/v1/vision/datasets/<dataSetId>

The response will be of the following format:

      {
        "id": 1001310,
        "name": "flowers",
        "createdAt": "2017-03-25T01:17:56.000+0000",
        "updatedAt": "2017-03-25T01:17:58.000+0000",
        "labelSummary": {
          "labels": [{
            "id": 6957,
            "datasetId": 1001310,
            "name": "Roses",
            "numExamples": 3
          }, 
           {
             "id": 6958,
             "datasetId": 1001310,
             "name": "lily",
             "numExamples": 2
           }, 
            {
              "id": 6959,
              "datasetId": 1001310,
              "name": "lotus",
              "numExamples": 3
          }]
        },
         "totalExamples": 8,
         "totalLabels": 3,
         "available": true,
         "statusMsg": "SUCCEEDED",
         "object": "dataset"
      }