I have a custom EMR launcher to get a cluster with Spark, Zeppelin and Hive. So yes, much faster for ad-hoc than tuning Postgres, basically it is a matter of if

I have a custom EMR launcher to get a cluster with Spark, Zeppelin and Hive. So yes, much faster for ad-hoc than tuning Postgres, basically it is a matter of if I need ad-hoc reporting/analysis or need it for normal operations. For 100 GB, regular, I'd just drop it into our running Redshift and let it eat it.