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Elasticsearch 7.0 Cookbook

You're reading from   Elasticsearch 7.0 Cookbook Over 100 recipes for fast, scalable, and reliable search for your enterprise

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Product type Paperback
Published in Apr 2019
Publisher Packt
ISBN-13 9781789956504
Length 724 pages
Edition 4th Edition
Languages
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Author (1):
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Alberto Paro Alberto Paro
Author Profile Icon Alberto Paro
Alberto Paro
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Table of Contents (19) Chapters Close

Preface 1. Getting Started FREE CHAPTER 2. Managing Mapping 3. Basic Operations 4. Exploring Search Capabilities 5. Text and Numeric Queries 6. Relationship and Geo Queries 7. Aggregations 8. Scripting in Elasticsearch 9. Managing Clusters 10. Backups and Restoring Data 11. User Interfaces 12. Using the Ingest Module 13. Java Integration 14. Scala Integration 15. Python Integration 16. Plugin Development 17. Big Data Integration 18. Another Book You May Enjoy

Using the ingest attachment plugin

It's easy to make a cluster non-responsive in Elasticsearch prior to 5.x, by using the attachment mapper. The metadata extraction from a document requires a very high CPU operation and if you are ingesting a lot of documents, your cluster is under-loaded.

To prevent this scenario, Elasticsearch introduces the ingest node. An ingest node can be held under very high pressure without causing problems to the rest of the Elasticsearch cluster.

The attachment processor allows us to use the document extraction capabilities of Tika in an ingest node.

Getting ready

You need an up-and-running Elasticsearch installation, as we described in the, Downloading and installing Elasticsearch ...

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