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docs: add Application Configuration Templates report for v2.16.0#2432

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tkykenmt merged 1 commit intomainfrom
docs/application-configuration-templates-v2.16.0
Jan 15, 2026
Merged

docs: add Application Configuration Templates report for v2.16.0#2432
tkykenmt merged 1 commit intomainfrom
docs/application-configuration-templates-v2.16.0

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Summary

This PR adds documentation for the Application Configuration Templates feature introduced in OpenSearch v2.16.0.

Reports Created

  • Release report: docs/releases/v2.16.0/features/opensearch/application-configuration-templates.md
  • Feature report: docs/features/opensearch/application-configuration-templates.md

Key Changes in v2.16.0

  • New SystemTemplatesPlugin interface for loading ABC templates from repositories
  • New context field in composable index templates for referencing ABC templates
  • System templates stored as component templates with special metadata marker
  • Templates automatically loaded when node becomes cluster manager

PRs Investigated

  • #14659 - Plugin interface for loading ABC templates
  • #14811 - Context field support in index templates

Related Issue

Closes #2244

@tkykenmt tkykenmt merged commit 05eb83d into main Jan 15, 2026
@tkykenmt tkykenmt deleted the docs/application-configuration-templates-v2.16.0 branch January 15, 2026 13:13
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