Note: for some inputs on the common issues, please refer to this article.

The code of the project is split between a common code-base and specific code in the Dataiku recipes, as highlighted in the project architecture.

The actions to take are different depending where the issue is located.

Option 1: Issue related to the code base (no change on the Dataiku project itself)

Create a hotfix branch from the code base repository master branch.
If you need it to test your development, create a branch from the Dataiku project in design following these guidelines and switch the library to your new code base hotfix branch.
Make sure the hotfix does not break anything related to other GBU projects (you can create a branch based on your new code base in the CS or SPP project and run a "Full reload" scenario to make sure it is still working).
Make sure the Gitlab pipeline with the unit tests passes successfully.
Merge your hotfix branch for the code-base on master (you can still refer to this page).
Update the Dataiku master project library for the right GBU by selecting the "Reset from remote HEAD" option.
Launch a "Full reload" scenario on dev to make sure it runs properly
Merge your hotfix branch for the code-base on dev (you can still refer to this page) to make sure it has the same status as master.
Create a new bundle of the project and deploy it in automation.

Option 2: Issue related to the Dataiku project Flow (no change on the code base)

Create a hotfix branch by duplicating the SPOT_SPP_MASTER Dataiku project (refer to How to : start a new development for the step but be careful that you are not starting from dev but master)
Apply the hotfix and merge back to master, run a "Full reload" scenario to make sure everything works (do not rebase in master !)
Rebase the dev to apply the hotfix changes.

Create a hotfix branch by duplicating the SPOT_SPP_MASTER Dataiku project (refer to How to : start a new development for the step but be careful that you are not starting from dev but master)
Create a hotfix branch from the code base repository master branch.
Apply the changes to fix the issue
Make sure the hotfix does not break anything related to other GBU projects (you can create a branch based on your new code base in the CS or SPP project and run a "Full reload" scenario to make sure it is still working).
Make sure the Gitlab pipeline with the unit tests passes successfully.
Merge your hotfix branch for the code-base on master (you can still refer to this page).
Merge back the Dataiku branch to master, run a "Full reload" scenario to make sure everything works (do not rebase in master !)
Update the Dataiku master project library for the right GBU by selecting the "Reset from remote HEAD" option.
Launch a "Full reload" scenario on dev to make sure it runs properly.
Merge your hotfix branch for the code-base on dev (you can still refer to this page) to make sure it has the same status as master.
Rebase the hotfix Dataiku branch on dev to apply the hotfix changes.
Create a new bundle of the project and deploy it in automation.