This is part 2 in our series on how we upgraded our Elasticsearch cluster without downtime and minimal user impact. As described in Part 1, our requirements were to both provide a smooth transition between two different versions of our system, while still keeping the opportunities for a rollback open. With that...
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How we upgraded an old, 3PB large, Elasticsearch cluster without downtime. Part 3 - Search Performance & Wildcards
This is part 3 in our series on how we upgraded our Elasticsearch cluster without any downtime and with minimal user impact. As part of the Elasticsearch Upgrade project, we needed to investigate the search performance improvements between the old and the new versions. Running an older version of Elasticsearch has presented many performance issues over the years and we... Read the story