--- title: Elasticsearch for Apache Hadoop description: Elasticsearch for Apache Hadoop is an umbrella project consisting of two similar, yet independent sub-projects: elasticsearch-hadoop and repository-hdfs... url: https://www.elastic.co/elastic/docs-builder/docs/3028/reference/elasticsearch-hadoop products: - Elasticsearch - Elasticsearch for Apache Hadoop applies_to: - Elastic Cloud Serverless: Unavailable - Elastic Stack: Generally available --- # Elasticsearch for Apache Hadoop Elasticsearch for Apache Hadoop is an umbrella project consisting of two similar, yet independent sub-projects: `elasticsearch-hadoop` and `repository-hdfs`. This documentation pertains to `elasticsearch-hadoop`. For information about `repository-hdfs` and using HDFS as a back-end repository for doing snapshot or restore from or to Elasticsearch, go to [Hadoop HDFS repository plugin](https://docs-v3-preview.elastic.dev/elastic/docs-builder/docs/3028/reference/elasticsearch/plugins/repository-hdfs). Elasticsearch for Apache Hadoop is an [open-source](https://www.elastic.co/elastic/docs-builder/docs/3028/reference/elasticsearch-hadoop/license), stand-alone, self-contained, small library that allows big data processing frameworks (specifically Apache Hadoop Map/Reduce and Apache Spark) to *interact* with Elasticsearch. One can think of it as a *connector* that allows data to flow *bi-directionaly* so that applications can leverage transparently the Elasticsearch engine capabilities to significantly enrich their capabilities and improve performance. Elasticsearch for Apache Hadoop provides native integration for Map/Reduce, Spark, and Hive, making Elasticsearch accessible as if it were a native resource within your data processing cluster. As such, Elasticsearch for Apache Hadoop operates as a library that processing jobs import and use through its APIs to read from and write to Elasticsearch. While the official name of the project is Elasticsearch for Apache Hadoop throughout the documentation the term elasticsearch-hadoop will be used instead to increase readability. This document assumes the reader already has a basic familiarity with Elasticsearch, and Hadoop and/or Spark concepts. For more information, refer to [Elasticsearch for Apache Hadoop resources](https://www.elastic.co/elastic/docs-builder/docs/3028/reference/elasticsearch-hadoop/resources).