[Backport main] Allow retried DMN resource distribution #9887
Conversation
This file contains 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
![github-actions[bot]](https://avatars.githubusercontent.com/in/15368?s=60&v=4){kind=small}
A critical bug was found related to redistributing DMN resources. When the distribution isn't acknowledged, it is retried until it is. This retry also occurs on the restart of the deployment partition, if the deployment distribution hasn't been completed for that partition yet. This retry results in an additional distribute deployment command on the other partition. Once processed it writes the DISTRIBUTED event which when applied inserts the decision and drg into the state. The second time the event is written again and applied again, in which case the insert fails due to consistency checks of the insert method. This test doesn't check the implementation of the insert (using the insert method), but checks the behavior. If the insert fails then it also doesn't write the DISTRIBUTED event, as the exception will make sure the entire transaction is rolled back. This test verifies that the DISTRIBUTED event is correctly written to the log and so without errors. It actually checks that this event is written twice, after the command was written twice. After this we can be sure that the retried distribution of the dmn resource in the deployment was succesfully processed. Note that this solution differs from the alternative: rejecting the retried DISTRIBUTE command if the resources are already known. However, this solution is more complex and not suitable for patching a critical bug. We can have a look at that solution in future versions. Co-authored-by: Nico korthout <nico.korthout@camunda.com> (cherry picked from commit 9fd942c)
This fixes critical a critical bug, where a decision and/or drg can be inserted twice due to retry logic for inter-partition distribution of deployments. To counter act, this allows an overwrite of existing values. See #9877 and DeploymentClusteredTest.shouldDistributeDmnResourceOnRetry. (cherry picked from commit 0e60752)
10 tasks
|
Build succeeded: |
korthout
changed the title
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
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.
Description
Backport of #9883 to
main.relates to #9877