Hi, thanks for the replay. 

I am following the instructions exactly as explained in 
http://predictionio.incubator.apache.org/templates/recommendation/quickstart/ 
<http://predictionio.incubator.apache.org/templates/recommendation/quickstart/>


My engine.json looks like this. 

{
  "id": "default",
  "description": "Default settings",
  "engineFactory": "com.iqchef.RecommendationEngine",
  "datasource": {
    "params" : {
      "appName": "MyTestApp"
    }
  },
  "algorithms": [
    {
      "name": "als",
      "params": {
        "rank": 10,
        "numIterations": 20,
        "lambda": 0.01,
        "seed": 3
      }
    }
  ]
}



Is this correct?




> On 2 Dec 2016, at 13:02, Natu Lauchande <[email protected]> wrote:
> 
> Hi,
> 
> I add similar errors when the event data was not fully  in there as expected 
> during the spark operations. Double check that your training data format is 
> compatible with what's described in the DataSource. 
> 
> Thanks,
> Natu

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