Mongo Spark connector with several hosts

Question

I try to connect Spark to MongoDB using mongo-spark-connector_2.10-2.0.0 but it doesn't work when I have several hosts in the URI

My URI looks like that :

mongodb://login:password@cluster0-shard-0xxxxx:27017,cluster0-shard-0yyyyy:27017,cluster0-shard-0zzzzz:27017/database?ssl=true&replicaSet=Cluster0-shard-0&authSource=admin

and I get errors like this

Command failed with error 8000: 'no SNI name sent, make sure using a MongoDB 3.4+ driver/shell.' on server cluster0-shard-0xxxxx

It works fine with other URIs that only have 1 host.

Answer 1

The problem was that I was using Atlas Free tier that requires SNI, which is not supported by the Mongo Java driver currently used by mongo-spark-connector_2.10-2.0.0.