Cloudera recently added the spark-time series library to github. According to the user docs, it definitely can fit autoregressive integrated moving average (ARIMA) models, but I see no mention of ARIMAX, which takes into account explanatory variables. Does anyone with more experience with this library know whether ARIMAX is possible in the library's current implementation? Mathematically, I understand the difference between ARIMA and ARIMAX, and I know extending it myself wouldn't be terribly difficult, but I'm right now looking for an off-the-shelf solution in spark. Can anyone recommend an alternative spark implementation?