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3.8.0

Official OpenSearch changelog summary with source attribution, release tags, and community reactions.

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OpenSearch·2 weeks ago · Aug 5, 2026, 05:20 PMDeprecationMay break your integrationAI-assisted summary

Summary

Added APIs for modifying data stream backing indices, multivalue doc count aggregation, and Hive pull‑based ingestion.
Introduced HTTP/3 client, gRPC support for PIT and bulk extra fields, and cross‑cluster streaming via Arrow Flight, plus performance and security enhancements.
Fixed multiple bugs (timeout handling, NPEs, snapshot issues) and upgraded Jackson, Hadoop, Lucene, Netty and other libs to address CVEs.

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