Add Lang-SDK KubernetesExecutor system test#68709
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…netesExecutor Add an optional pod_template_file to each [sdk] coordinators entry so a queue routed to a non-Python coordinator launches its worker pod from a coordinator-specific template (e.g. an image bundling the JVM for a Java coordinator). The KubernetesExecutor resolves the template by queue when the task's executor_config does not set one; a per-task executor_config template still wins.
…Executor Adds a kind-based system test that runs one Dag (lang_sdk_combined) whose tasks span the Python task-runner and the Go/Java coordinators on the KubernetesExecutor. The golang/java queues route to their coordinators, each carrying a pod_template_file (the worktree-1 feature). Each worker pod's init container stages the queue's artifact (Go binary / Java jar) from a per-language localstack S3 bucket through the DagBundle interface into a shared emptyDir that is the coordinator's executables_root/jars_root. The Go queue runs on the prod image (self-contained static binary); the Java queue runs on the CI image (bundles the JVM the JavaCoordinator needs). New k8s-test-only bundles: go-sdk/example/k8s_combined and java-sdk/k8s-example. Provisioning is a new breeze command, `breeze k8s setup-lang-sdk-test`, which builds the artifacts, deploys localstack, uploads artifacts and the Python stub Dag, renders the pod-template image placeholders, and installs the Helm release.
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area:ConfigTemplates
area:dev-tools
area:go-sdk
area:kubernetes-tests
area:providers
area:task-sdk
kind:documentation
provider:cncf-kubernetes
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| if err := bundlev1server.Serve(&combinedBundle{}); err != nil { | ||
| log.Fatal(err) |
This was referenced Jun 18, 2026
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extrafield for Coordinator #68694 and Supportextrafield for Coordinator #68694. Stacked on top of it.Why
The Lang-SDK (Multi-Lang) feature is executor-agnostic, the best way to verify whether Lang-SDK is executor-agnostic or not is adding k8s system test. We use CeleryExecutor for E2E test in docker-compose, the LocalExecutor is used for normal
breeze start-airflowsetup.How
We haven't settle down the Artifact deployment for Lang-SDK (e.g. How does
*.jars and binaries being sync to worker). We intentionally defer this part to users to figure out the most comfortable way for them, then stabilize as best practice.The current k8s test add a small utility script (
stage_artifacts.py) which leveragesS3DagBundlein theinitContainersection to provision the artifacts in thepodthat KubernetesExecutor created. See more details inkubernetes-tests/lang_sdk/README.md.What
Add k8s test for Lang-SDK feature that trigger a Dag with both Python, Java, and Go Tasks in it with KubernetesExecutor.
Was generative AI tooling used to co-author this PR?