astronomer/astronomer-cosmos astronomer-cosmos-v1.15.1a3

v1.15.1a3

on GitHub

Pre-release alpha of Cosmos 1.15.1, the first cut from the clean release-1.15 maintenance line (branched from the v1.15.0 tag with the milestone fixes cherry-picked).

Note for a1/a2 testers: those alphas were hotfix cuts from main and carried 1.16.0 features (#2844 dedicated WATCHER queues, #2871 gcs_upload retries) that this line does not ship. The a2 watcher --full-refresh fix (#2917) is not yet in this cut; it lands before GA.

Behaviour Changes

None of these break the public Cosmos API, but review before upgrading:

• Kubernetes-based dbt operators no longer override the container image's ENTRYPOINT by default: the full dbt command is passed via arguments and any user-supplied cmds is preserved. Images whose entrypoint is itself dbt now require an explicit cmds=["dbt"]. This restores the pre-1.15.0 default. See #2891.
• Passing output-only template fields (compiled_sql, freshness) via operator_args in async execution mode now raises CosmosValueError at DAG parse time instead of an opaque TypeError. See #2868.

Bug Fixes

• Preserve container ENTRYPOINT by default in Kubernetes-based dbt operators by @pankajkoti in #2891
• Make partial-parse cache reads resilient to NFS ESTALE races by @mungiyo in #2867
• Render env_var() Jinja when deriving ExecutionMode.WATCHER dataset namespace by @pankajastro in #2879
• Avoid deprecated airflow.exceptions.AirflowSkipException import on Airflow 3.1+ by @pankajastro in #2796
• Reject output-only template fields on the async operator_args path by @pankajastro in #2868

Docs

• Document container command and image ENTRYPOINT handling for Kubernetes modes by @pankajkoti in #2906
• Document verified Cosmos/Runtime/dbt Core compatibility by @pankajastro in #2914
• Replace redirecting documentation URLs and raise the link-check timeout by @pankajkoti in #2905
• Reference stable Cosmos 1.11.0 for dbt Fusion instead of the 1.11.0a1 alpha by @pankajastro in #2861
• Clarify callback support under ExecutionMode.WATCHER by @pankajastro in #2884
• Add Airflow 3.3 row to the dbt dependency conflict matrix by @pankajastro in #2886
• Improve privacy policy by @tatiana in #2910
• Remove duplicated sections in contributing.rst by @tatiana in #2859

Others

• Fix flaky source_pruning_dag integration test by seeding the database first by @tatiana in #2927
• Fix CI dependency cache by @tatiana in #2931
• Add dbt-core 1.12 to the test matrix by @pankajastro in #2773
• Add Python 3.14 to the test matrix (Airflow 3.2/3.3, dbt 1.12 only) by @pankajastro in #2903
• Pin Airflow 3.3 requirements and simplify the pre-install script by @pankajkoti in #2881

Milestone: Cosmos 1.15.1
Release PR: #2935
Full changelog: astronomer-cosmos-v1.15.0...astronomer-cosmos-v1.15.1a3