Cheaper bulk operations

There are times when you need to perform more than one request on Elasticsearch. For this, Elasticsearch offers a bulk API with the _bulk endpoint that allows you to perform bulk operations in a single request, be it indexing, updating, or deleting more than one document, getting more than one document using more than one document ID, or executing more than one query in a single request. The best part is that bulk operations can be executed on more than one index and doc type in a single request. The Elasticsearch Java client also offers a BulkProcessor class, which will be covered in a later section of this chapter. For now, let's explore the bulk requests.

Note

The Python client provides a helper module to create bulk operations. You need to import this module from elasticsearch.helpers import bulk.

Bulk create

Bulk create allows to create documents only if they do not already exist in the index. It expects _source for each document to be separated with new lines.

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