Comment by seabrookmx

ElasticSearch seems to have more mindshare. It can be easier to find resources online to help solve your problems.. though ES moves through versions fast (and they do break backwards compatibility on major version bumps) so sometimes this can still be an issue.

Other benefit is that you don't have to rely on Zookeeper if you're horizontally scaling.

I don't have a ton of experience with Solr but they seem pretty comparable.