Breaking changes

You need to be aware of the breaking changes when migrating your application to Elasticsearch 7.0. The following document that describes the breaking changes will be listed in the subsequent sub-sections:

• Breaking changes in 7.0 (https://www.elastic.co/guide/en/elasticsearch/reference/current/breaking-changes-7.0.html)

If you are a novice, just jump to Chapter 2, Index APIs, and come back later. We will only point out important changes from the 7.0 documentation here.

Aggregations changes

The changes related to aggregation are as follows:

• The execution hints (global_ordinals_hash and global_ordinals_low_cardinality) for the term aggregations are eliminated.
• The max limit of buckets allowed in a single response...