Definitions

The active number of primary shards of the document. When user index a document, the Elasticsearch adds the document to primary shards before replica shards.

The active number of shards of the document.

Bucket aggregations in Elasticsearch create buckets or sets of documents based on certain criteria.

Bucket aggregations in Elasticsearch creates buckets or set of documents based on certain criteria (e.g. Sum Aggregation). Depending on the aggregation type, user can create filtering buckets, that is, buckets representing different value ranges and intervals for numeric values, dates, IP ranges, and more.

Number of documents retrieved by Elasticsearch aggregation depends on the size of the bucket but not based on the volume documents available in search result documents. User can increase the bucket size in Elasticsearch to retrieve more documents.

The collection of connected Elasticsearch nodes is a cluster.

The allocated storage size in Elasticsearch.

JSON object containing data stored in Elasticsearch is called document.

Elasticsearch is a search engine, and it performs and combines various kinds of searches irrespective of their data type. DataView uses Elasticsearch as a Data Repository.

Elasticsearch's application logs are used to monitor the cluster and diagnose issues. If user runs Elasticsearch as a service, the default location of the logs varies based on the platform and installation method.

The Collection of JSON documents is called index. The process adding one or more JSON documents to Elasticsearch is called indexing.

The allocated Memory in Elasticsearch.

A single Elasticsearch server is termed as Node. When user starts an instance of Elasticsearch, it actually starts a node.

Enhance the basic Elasticsearch functionality.

Replicas are copies of the Primary shards. Elasticsearch allows the user to make one or more copies of the index's shards into what are called replica shards, or replicas for short. Replica shards can improve search performance and resiliency by distributing data across multiple nodes.

The unit at which Elasticsearch distributes document (data) around the cluster is called shard. There are two types of Shards: Primary and Replica.

Elastic Uptime enables user to monitor the availability and response times of applications and services in real time and to detect problems before they affect users.