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From Pat Ferrel <>
Subject Re: PredictionIO quickstart
Date Fri, 12 May 2017 15:50:56 GMT
Elasticsearch is required because it performs the last part of the algorithm, not just as a
store and Postgres does not. However Postgres can be used for the EventStore and MetaStore,
replacing HBase but if you do you will likely face scaling issues because recommenders are
big-data applications, more so than about anything else you have run into. HBase also interfaces
with Spark in a better way than Postgres. 

There are several setup how-tos here: <>

On May 11, 2017, at 8:05 AM, Dennis Honders <> wrote:


I'm following the quickstart of predictionIO
<> for the UR template.

In this case, elasticsearch is required. 

I have: 
No: Postgresql. 

What are the variables for hbase and elasticsearch? 

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