Over the last few weeks, Isabel Drost-Fromm published a series of blog posts about how we go about testing and quality assurance (QA) for Elasticsearch. From continuous integration to the various levels of testing to performing randomized test runs, the importance of testing and QA for Elasticsearch cannot be understated. In addition to these great articles, Isabel has also authored a white paper for those who'd like to go even more in-depth.
Get reading. Get testing. And enjoy!