I am running elasticsearch1.1.1. I am planning to upgrade our test and production cluster to elasticsearch 2.0. I would like to know the steps if I want to revert back to 1.1.1 if the upgrade does not go well. Thanks Malini

Downgrading to the previous version of elasticsearch

warkolm (Mark Walkom) November 17, 2015, 12:53am 2

You cannot due to underlying Lucene changes.
Make sure you take a snapshot before an upgrade so you can restore this.

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Downgrading to the previous version of elasticsearch

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