Say “Hello” to “oh dot nine oh”

Nick Zadrozny · May 06, 2013
1 minute read

After a smooth upgrade, all of our customers are now running on the latest and greatest Elasticsearch 0.90.0!

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  "ok" : true,
  "status" : 200,
  "version" : {
    "number" : "0.90.0",
    "snapshot_build" : false
  },
  "tagline" : "You Know, for Search"
}

Elasticsearch 0.90 was released just last week, and is planned to be the last major version before an upcoming 1.0 release. Version 0.90 includes a major upgrade of the underlying Lucene full-text indexing and search library, moving from its version 3.6 to 4.2.

Last week we we wrote a post that touched on some of the improvements in Lucene 4 and Elasticsearch 0.90. It mentions and summarizes a few of the Herculean feats of engineering that have gone in to these recent releases. For even more detailed information about what's new in Elasticsearch 0.90, be sure to view the recording of last week's webinar by Elasticsearch, Inc.

While this upgrade did require a full cluster restart, we were able to limit our hard downtime to about three minutes. All index primary shards were back online in less than ten minutes, with full recovery of all shards and replicas within 30.

We are already pleased to see improved system usage metrics across the board, and we trust that you are all likewise seeing the benefits of the upgrade in your applications.