Elassandra

Input—per 1M tokens

Output—per 1M tokens

Context—tokens

WeightsClosed

About

Elassandra is ranked #6 of 13 in wide-column databases on Inferse. It runs on API, Linux, Self-hosted.

Compared on wide-column databases

Deployment model: self_hostedelassandra.org
Query interface: multipleelassandra.org
Consistency controls: tunableelassandra.org
Multi-region support: Yeselassandra.org
Transaction support: Yeselassandra.org
Horizontal scaling: Yeselassandra.org

Facts

Purpose: Elassandra embeds OpenSearch inside Apache Cassandra so each node provides distributed storage and distributed search.elassandra.org · 3 Oct 2026
Maintained stack: The documented maintained line targets Apache Cassandra 4.0.x, OpenSearch 1.3.x, and Java 11.elassandra.org · 3 Oct 2026
Data model: Elassandra maps OpenSearch indices to Cassandra keyspaces, documents to rows, and indexed fields to columns or cells.elassandra.org · 3 Oct 2026
Durability: Cassandra is the durable storage layer, and restart recovery replays Cassandra state and can rebuild the local search view.elassandra.org · 3 Oct 2026
Scaling: Data placement follows Cassandra token ownership, and replica behavior follows Cassandra keyspace replication.elassandra.org · 3 Oct 2026
Search interfaces: Search requests can use the OpenSearch HTTP API or CQL, and Elassandra returns standard OpenSearch-style search responses.elassandra.org · 3 Oct 2026
Schema workflows: Elassandra supports creating Cassandra schema from an OpenSearch index or discovering an existing Cassandra schema through OpenSearch mappings.elassandra.org · 3 Oct 2026
Integrations: The documentation lists integration with OpenSearch plugins, OpenSearch Dashboards, and Spark.elassandra.org · 3 Oct 2026
Deployment options: The documentation lists tarball, Debian package, RPM, Docker image, and Helm chart installation options.elassandra.org · 3 Oct 2026
Index deletion limit: Deleting an index removes search metadata and files but does not delete its backing Cassandra keyspace or table by default.elassandra.org · 3 Oct 2026
Consistency limit: Document version fields such as _version, _seq_no, and _primary_term are not globally authoritative conflict controls.elassandra.org · 3 Oct 2026
Refresh trade-off: Immediate search visibility after a write trades off against write latency, and synchronous refresh adds cost.elassandra.org · 3 Oct 2026
Operational requirement: Elassandra requires the Murmur3 partitioner.elassandra.org · 3 Oct 2026
What it does: Elassandra embeds OpenSearch inside Apache Cassandra so each node serves distributed storage and distributed search.elassandra.org · 3 Oct 2026
Current stack: The maintained line targets Apache Cassandra 4.0.x, OpenSearch 1.3.x, and Java 11.elassandra.org · 3 Oct 2026
Data durability: Cassandra is the durable storage layer, and Elassandra rebuilds the local search view from Cassandra state when needed.elassandra.org · 3 Oct 2026
Search and storage mapping: An OpenSearch index maps to a Cassandra keyspace, and the current `_doc` model maps to a Cassandra table.elassandra.org · 3 Oct 2026
APIs: Elassandra exposes Cassandra-backed documents through OpenSearch-compatible HTTP APIs and also supports searching through CQL.elassandra.org · 3 Oct 2026
Deployment: The documentation lists tarball, Debian package, RPM, Docker image, and Helm chart installation options.elassandra.org · 3 Oct 2026
Operational limit: Elassandra requires the Murmur3 partitioner, and search indexing adds work to Cassandra writes, especially for complex documents.elassandra.org · 3 Oct 2026
Search freshness: Refresh scheduling is separate from Cassandra replication, so immediate search visibility trades off against write latency.elassandra.org · 3 Oct 2026
Feature scope: The current line focuses on embedded OpenSearch, and the documentation advises validating advanced upstream features before relying on them in production.elassandra.org · 3 Oct 2026
Local resource guidance: The quick start says each node usually needs around 1.5 GB to 2 GB of RAM for local demos.elassandra.org · 3 Oct 2026