In Elasticsearch, a dynamic mapping is a mapping that is automatically generated based on the fields present in the JSON documents being indexed. When a new document is indexed in Elasticsearch, it is analyzed to determine the fields present in the document and their data types. Elasticsearch then generates a dynamic mapping that defines the … Read more
In Elasticsearch, a field is a key-value pair within a document that contains a single piece of data. Fields can be of different data types, and they are used to store and index data in Elasticsearch. Here are some of the different types of fields in Elasticsearch: 1. Text: Text fields are used for full-text … Read more
In Elasticsearch, a document is the basic unit of data that can be indexed and searched. A document is a JSON object that contains a set of key-value pairs representing the document’s fields and their values. Each document in Elasticsearch is stored in an index, which is a collection of documents that have similar characteristics. … Read more
In Elasticsearch, shard failures can occur due to various reasons, such as node failures, disk failures, or network issues. Elasticsearch provides several mechanisms to handle shard failures and ensure that data remains available and searchable in case of failures. When a shard failure occurs, Elasticsearch takes the following steps to handle it: 1. Detection: Elasticsearch … Read more
In Elasticsearch, data is distributed across shards using a process called sharding. When an index is created, it is divided into a specified number of primary shards, and each primary shard is stored on a separate node in the Elasticsearch cluster. The sharding process is responsible for distributing the data across the primary shards in … Read more
The number of replica shards that an Elasticsearch index can have is determined at the time the index is created, and it can be changed later to increase or decrease the number of replicas. The default number of replica shards for an index is 1, but it can be increased to a larger number to … Read more
In Elasticsearch, a replica shard is a copy of a primary shard that is stored on a different node in the Elasticsearch cluster. Replica shards provide fault tolerance and high availability of data by ensuring that multiple copies of the data are available in case of node failures or other issues. When an index is … Read more
The number of primary shards that an Elasticsearch index can have is determined at the time the index is created, and it cannot be changed later without reindexing the data. The default number of primary shards for an index is 1, but it can be increased to a larger number to improve performance and scalability. … Read more
In Elasticsearch, a primary shard is a shard that is responsible for storing a subset of the data in an index. When an index is created, it is divided into a specified number of primary shards, and each primary shard is stored on a separate node in the Elasticsearch cluster. Primary shards are used for … Read more
In Elasticsearch, an index is structured as a collection of documents that have similar characteristics, such as the same data structure and type of content. Each document in an index is a JSON object that contains a set of key-value pairs representing the document’s fields and their values. The structure of an Elasticsearch index is … Read more