Searching with OpenSearch

OpenSearch is used as a tool for searching and analyzing data in documents through:

• Structured queries similar to SQL queries: to find documents with a set of fields that meet the specified conditions.
• Full-text queries: to find a certain string in the documents and sort the results by relevance. These queries also allow you to use additional search functions, including autocomplete and search for phrases and similar strings. Learn more about full-text search in this OpenSearch guide.
• Complex queries that combine the above types of queries.

In Managed Service for OpenSearch, you can perform all these types of queries using the preinstalled search plugins: Querqy, SQL and PPL, etc.

Search features in OpenSearch include the following:

• You can run search within a specific index in a cluster or across multiple indexes.
• Asynchronous search is supported for large queries that can be performed over a long period of time.

For more information about search features, see this OpenSearch guide.

Use casesUse cases

• Delivering data from Yandex Managed Service for Apache Kafka® using Yandex Data Transfer
• Migrating data from a third-party OpenSearch cluster using Yandex Data Transfer
• Migrating data from Elasticsearch
• Using the yandex-lemmer plugin in Managed Service for OpenSearch