Github user mars commented on the issue:
https://github.com/apache/incubator-predictionio/pull/401
Back in May, we fixed an intermittent class loading problem by [making a
change to stabilize the
classpath](https://github.com/mars/incubator-predictionio/commit/9ecc77628aba347454073e9919096a8fc8e0b952)
in our fork of incubator-predictionio. Would you be open to adding that to
this PR as well?
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