apache/ossie

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Apache Ossie, industry wide specification effort to standardize how we exchange semantic metadata across analytics, AI and BI platforms, providing a vendor neutral, single source of truth for semantic data

Stars: 2.1k
Forks: 267
Open beginner issues: 0
Indexed issues: 49
Avg merge: 4d 20h
Merged PRs (30d): 24

Dominant language: Python
License: Apache-2.0
Last GitHub push: Sep 12, 2026
Latest indexed: Sep 14, 2026
Contributing guide: Contributing guide
Code of conduct: Code of conduct
Beginner labels: No beginner labels indexed

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44 open issues indexed

Only allow one dialect per OSI document Open

apache/ossie#52 · 0 comments · 4 reactions · 0 assignees · Indexed Sep 14, 2026
New attribute : contain personal data Open

apache/ossie#58 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
New attribute : confidential indicator Open

apache/ossie#59 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
New Flags : Restricted and Internal only indicators. Open

apache/ossie#87 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Community Implementation: Trust Control Center — OSI-compatible governance & reconciliation platform Open

apache/ossie#92 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Extended Metatada Proposal for OSI Open

apache/ossie#100 · 2 comments · 2 reactions · 0 assignees · Indexed Sep 14, 2026
Request: first-class representation of file-backed datasets (e.g. Parquet) in Dataset.source (or adjacent fields) Open

apache/ossie#104 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Proposal: Promote Behavior Layer to semantic_model.behavior (Actions/Rules/Effects) Open

apache/ossie#106 · 4 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Proposal: Adopt ontology-query as an Ontology Access Layer tool Open

apache/ossie#107 · 1 comment · 6 reactions · 0 assignees · Indexed Sep 14, 2026
Follow up on OSI ai_context and custom_extensions mapping in snowflake yaml Open

apache/ossie#111 · 0 comments · 1 reaction · 0 assignees · Indexed Sep 14, 2026
Create converter/common module (for Java binding) Open

apache/ossie#121 · 0 comments · 0 reactions · 1 assignee · Indexed Sep 14, 2026
core-spec/spec.yaml declares `ai_context: string` but the JSON schema + canonical example use a structured object Open

apache/ossie#141 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Add Apache Iceberg expression language as "vendor" Open

apache/ossie#142 · 0 comments · 0 reactions · 1 assignee · Indexed Sep 14, 2026
Add Snowflake → OSI import converter (snowflake_to_osi) Open

apache/ossie#162 · 1 comment · 0 reactions · 1 assignee · Indexed Sep 14, 2026
Add a WrenAI MDL converter Open

apache/ossie#196 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Documentation request: clarify Ossie’s relationship with FIBO and financial-services ontology layering Open

apache/ossie#220 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Add a Lightdash converter Open

apache/ossie#227 · 4 comments · 9 reactions · 0 assignees · Indexed Sep 14, 2026
does ai_context really nessary? Strengthen description and name to reduce reliance on ai_context Open

apache/ossie#234 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Add a Cube converter Open

apache/ossie#248 · 3 comments · 5 reactions · 0 assignees · Indexed Sep 14, 2026
Add bidirectional Apache Gravitino converter Open

apache/ossie#256 · 1 comment · 1 reaction · 0 assignees · Indexed Sep 14, 2026
Validator ergonomics for consumer repos: validate CLI exits 0 on stub, validate.py takes one file, default schema path assumes repo layout Open

apache/ossie#266 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Add an Apache Superset dataset YAML converter Open

apache/ossie#268 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Evaluate a ThoughtSpot TML converter Open

apache/ossie#269 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Validator crashes instead of reporting errors for invalid YAML structures Open

apache/ossie#270 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Validation tooling: cross-dialect metric drift and expression purity (happy to upstream) Open

apache/ossie#279 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Proposal: ThoughtSpot converter (bidirectional, TML ↔ Ossie) Open

apache/ossie#285 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Spec has no way to declare a non-additive metric Open

apache/ossie#290 · 1 comment · 1 reaction · 0 assignees · Indexed Sep 14, 2026
Allow a default dialect at the semantic model level Open

apache/ossie#294 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Clarify query-backed Dataset.source representation and SQL dialect Open

apache/ossie#298 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
msi_to_osi silently drops offset_window / offset_to_grain on DERIVED metric inputs, producing constant-zero expressions Open

apache/ossie#302 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
msi_to_osi silently discards config.meta instead of mapping it to custom_extensions Open

apache/ossie#303 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
New Attribute : owner Open

apache/ossie#305 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Repo-level cross-converter interop matrix (hub-level testing) Open

apache/ossie#309 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Clarify canonical ownership of the dbt converter Open

apache/ossie#314 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
dbt converter loses derived metric time-context semantics in MetricFlow to Ossie conversion Open

apache/ossie#317 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Add a converter for Alibaba Cloud Hologres Semantic View Open

apache/ossie#319 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
[databricks] MV→Ossie import aborts on non-equi/filtered join conditions instead of preserving them in custom_extensions Open

apache/ossie#321 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Core spec: document root cannot carry ai_context or custom_extensions Open

apache/ossie#322 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
cli: argument validation gaps remain after #334 (plugin, plugin install, convert) Open

apache/ossie#345 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
GoodData export drops grain for aliased primary-key fields Open

apache/ossie#346 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Converter drops Snowflake custom_extensions but Snowflake documentation shows it accepts custom_extensions Open

apache/ossie#355 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Ontology expression language: semantics and interoperability considerations Open

apache/ossie#361 · 4 comments · 1 reaction · 0 assignees · Indexed Sep 14, 2026
Snowflake converter turns a query source with a leading comment into a fake table Open

apache/ossie#376 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
dbt converter slices a compound aggregate argument at its last dot, so `SUM(orders.gross - orders.tax)` becomes `SUM(orders.tax)` Open

apache/ossie#385 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026

apache/ossie

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