Elasticsearch is an open-source, full-text search engine that provides distributed indexing and search. You can install Elasticsearch on any machine where the MDM Hub components are installed or on a separate machine. Based on your MDM Hub topology and the amount of data to index, determine the number of nodes to configure for the Elasticsearch cluster. Each node can in turn have multiple indexes. You can decide to split the indexes into multiple shards.

The performance of search with Elasticsearch is superior to search with Solr for the MDM Hub environment. Also, the performance of data indexing is much better with Elasticsearch in the MDM Hub environment.

When Elasticsearch is configured for the MDM Hub environment, users can search for records within a specific business entity. This is different from search with Solr, where you could either search across all the business entities or within a specific business entity.

When search is configured with Elasticsearch, you can use the asterisk wildcard character (*) to perform a search. Unlike Solr, the query parser of Elasticsearch provides the flexibility to use various types of characters in the search strings. You can use operators such as

AND

and

OR

to search for records.

For information about how to determine the number of nodes to configure for the Elasticsearch cluster and how to configure indexes, see the

Elasticsearch documentation.