Migration guide

Chewy 5 / ES 5 to Chewy 6 / ES 6

In order to upgrade chewy5/ES5 to chewy6/ES6 in the most seamless manner you have to:

Upgrade to the latest 5.x stable releases: Chewy 5.2, ES 5.6
Migrate any multi-typed indexes into single-typed
- Using multi-index queries could be helpful
- Parent/Child relationship is deprecated in favor of the join field
Handle deprecation of string type & not_analyzed value for the index mapping parameter:
- replace fields with { type: 'string', index: 'not_analyzed'} by {type: 'keyword'}
- replace fields with { type: 'string', index: 'analyzed'} by {type: 'text'}
PathHierarchy tokenizer' param delimiter now accepts only one argument, others should be replaced by character filter
Make sure you don't use any other of the deprecated ES5 features
Run your test suite on ES6
Run manual tests on ES6
Perform a rolling upgrade of Elasticsearch
Upgrade to Chewy 6