Github user cestella commented on the issue: https://github.com/apache/metron/pull/929 What do you mean "auto-commit"? By default it will commit at the batch level as the other writers do. You can turn that behavior off and it'll commit when the Solr client decides at the cost of possibly losing data. Regarding solr vs solrcloud, to my understanding solr is the product and solrcloud is a way of running Solr. The other way is solr standalone. Originally we named things after the product, which I think is correct, and have made explicit that we support Solr running in Solr Cloud mode in the docs.
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