-
Notifications
You must be signed in to change notification settings - Fork 329
Flink Kubernetes Operator 1.15.0 #845
New issue
Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.
By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.
Already on GitHub? Sign in to your account
Draft
gyfora
wants to merge
1
commit into
apache:asf-site
Choose a base branch
from
gyfora:asf-site
base: asf-site
Could not load branches
Branch not found: {{ refName }}
Loading
Could not load tags
Nothing to show
Loading
Are you sure you want to change the base?
Some commits from the old base branch may be removed from the timeline,
and old review comments may become outdated.
+115
−10
Draft
Changes from all commits
Commits
File filter
Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
There are no files selected for viewing
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
102 changes: 102 additions & 0 deletions
102
docs/content/posts/2026-05-04-release-kubernetes-operator-1.15.0.md
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,102 @@ | ||
| --- | ||
| title: "Apache Flink Kubernetes Operator 1.15.0 Release Announcement" | ||
| date: "2026-05-04T08:00:00.000Z" | ||
| authors: | ||
| - gyfora: | ||
| name: "Gyula Fora" | ||
| aliases: | ||
| - /news/2026/05/04/release-kubernetes-operator-1.15.0.html | ||
| --- | ||
|
|
||
| The Apache Flink community is excited to announce the release of Flink Kubernetes Operator 1.15.0! | ||
|
|
||
| This release brings **Kubernetes-native Conditions** to `FlinkDeployment`, **Logback logging support**, bundled metric reporters, Flink 2.2 compatibility, and a number of important reliability fixes across session jobs, savepoints, and the mutating webhook. | ||
|
|
||
| We encourage you to [download the release](https://flink.apache.org/downloads.html) and share your experience with the | ||
| community through the Flink [mailing lists](https://flink.apache.org/community.html#mailing-lists) or | ||
| [JIRA](https://issues.apache.org/jira/browse/flink)! We're looking forward to your feedback! | ||
|
|
||
| ## Highlights | ||
|
|
||
| ### Kubernetes Conditions in FlinkDeployment Status | ||
|
|
||
| The operator now exposes a standard Kubernetes | ||
| [Condition](https://kubernetes.io/docs/concepts/workloads/pods/pod-lifecycle/#pod-conditions) in the `status` field of | ||
| `FlinkDeployment` resources. The `Running` condition gives tooling a consistent, machine-readable signal of whether | ||
| the deployment is up and running, directly usable with `kubectl wait`, GitOps controllers, and any tool that speaks | ||
| Kubernetes conditions. | ||
|
|
||
| For example, to wait until a deployment is running: | ||
|
|
||
| ```shell | ||
| kubectl wait flinkdeployment/my-job --for=condition=Running --timeout=120s | ||
| ``` | ||
|
|
||
| ### Logback Logging Support | ||
|
|
||
| The operator now supports **Logback** as an alternative logging framework alongside the existing Log4j2 default. | ||
| The active framework is selected at install time via the new `logging.framework` Helm value: | ||
|
|
||
| ```shell | ||
| helm install flink-operator helm/flink-kubernetes-operator --set logging.framework=logback | ||
| ``` | ||
|
|
||
| Both `logback-operator.xml` and `logback-console.xml` configuration files are bundled in the Helm chart and can be | ||
| customized the same way as the existing Log4j2 properties files. This is particularly useful for organizations that | ||
| standardize on Logback or rely on Logback-specific appenders and integrations. | ||
|
|
||
| ### Bundled Metric Reporters and Expanded Metrics Documentation | ||
|
|
||
| The operator Helm chart now bundles the `flink-metrics-dropwizard` reporter out of the box, removing the need for users to add the JAR manually when integrating with monitoring stacks that consume Dropwizard metrics. | ||
|
|
||
| The operator metrics documentation has also been substantially reworked: it now explains how operator-scoped metric identifiers are built, documents the `kubernetes.operator.metrics.*` prefix for operator-scoped reporter configuration, and walks through an end-to-end Prometheus monitoring setup. Most importantly, every metric the operator exposes is now documented in one place, with dedicated sections covering `FlinkDeployment` / `FlinkSessionJob` lifecycle and `JobStatus` tracking, `FlinkBlueGreenDeployment`, `FlinkStateSnapshot`, and autoscaler metrics, each with a clear explanation of what the metric measures and when it's emitted, so users finally have a complete picture of what's available out of the box. | ||
|
|
||
| ### Flink 2.2 Compatibility | ||
|
|
||
| Operator 1.15.0 is fully validated against Apache Flink 2.2. The supported Flink version matrix is: | ||
|
|
||
| **2.2.x, 2.1.x, 2.0.x, 1.20.x, 1.19.x** | ||
|
|
||
| ## Notable Bug Fixes | ||
|
|
||
| ### Savepoint and State Management | ||
|
|
||
| - Fixed a race condition where a savepoint or last-state upgrade could lose job state when the JobManager was slow to | ||
| start. | ||
| - Fixed an issue where savepoint history entries were removed from the status before the savepoint file was | ||
| successfully disposed, which could leave orphaned savepoint files on the filesystem. | ||
| - Terminal (FINISHED / FAILED) jobs are no longer erroneously restarted by the cluster/job health check, eliminating | ||
| unexpected job restarts after intentional completion. | ||
|
|
||
| ### Session Job Reliability | ||
|
|
||
| - Added a new configuration option to cancel a running session job when the `FlinkSessionJob` resource is deleted, | ||
| rather than blocking on the finalizer indefinitely. | ||
| - Improved the session job deletion flow so that cleanup proceeds correctly even when the session cluster is | ||
| temporarily unreachable. | ||
| - Fixed a bug where `FlinkSessionJob` deletion could get stuck behind a finalizer that was never cleared. | ||
| - Fixed missing `ownerReferences` on JobManager Deployments recreated during session cluster recovery, ensuring | ||
| proper garbage collection. | ||
|
|
||
| ## Release Notes | ||
|
|
||
| The release notes can be found [here](https://issues.apache.org/jira/secure/ReleaseNote.jspa?projectId=12315522&version=12356676). | ||
|
|
||
| ## Release Resources | ||
|
|
||
| The source artifacts and helm chart are available on the Downloads page of the Flink website. You can easily try out the new features shipped in the official 1.15.0 release by adding the Helm chart to your own local registry: | ||
|
|
||
| ``` | ||
| $ helm repo add flink-kubernetes-operator-1.15.0 https://archive.apache.org/dist/flink/flink-kubernetes-operator-1.15.0/ | ||
| $ helm install flink-kubernetes-operator flink-kubernetes-operator-1.15.0/flink-kubernetes-operator --set webhook.create=false | ||
| ``` | ||
|
|
||
| You can also find official Kubernetes Operator Docker images of the new version on [Dockerhub](https://hub.docker.com/r/apache/flink-kubernetes-operator). | ||
|
|
||
| For more details, check the [updated documentation](https://nightlies.apache.org/flink/flink-kubernetes-operator-docs-release-1.15/) and the release notes. We encourage you to download the release and share your feedback with the community through the Flink mailing lists or JIRA. | ||
|
|
||
| ## List of Contributors | ||
|
|
||
| The Apache Flink community would like to thank all contributors who made this release possible: | ||
|
|
||
| Andrea Cosentino, David Radley, Dennis-Mircea Ciupitu, Ferenc Csaky, Gabor Somogyi, GuoYu, Gyula Fora, Harshit Gupta, jennifer-xiong25, Krzysztof Adrian Palka, Michał Kozal, Prashant Khanal, Purushottam Sinha, Sergio Chong, wangxinglong, wangxinglong02 | ||
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
Uh oh!
There was an error while loading. Please reload this page.