Github user dszeto commented on the issue:
https://github.com/apache/incubator-predictionio/issues/340
Hi, please redirect usage questions to
u...@predictionio.incubator.apache.org for more exposure to the rest of the
community. Subscription instructions can be found at
http://predictionio.incubator.apache.org/support/.
If you are not using a Spark cluster, you would want to reduce
`numIterations` in `engine.json` to avoid stack overflow.
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