Example Workflow Execution Failure

KNIME Server
1

Hello KNIME Community,

I’ve been encountering a couple of recurring issues on the KNIME Web Portal and need some guidance to resolve them:

Workflow Compatibility Error: When attempting to run certain workflows, I receive an error indicating that the workflow was created with a future version of KNIME (5.4.0) and cannot be loaded on my current version (5.3.3). Here’s the exact error message:
Could not create job. Could not load workflow … . Unable to load workflow; it was created with a future version of KNIME (5.4.0)…

  • Should users update their KNIME Server independently to align with the workflows created in newer KNIME versions, or is there a recommended approach for handling version discrepancies?
  • How frequently should server updates be considered, especially in environments where multiple users are executing a variety of workflows?
  • Are there specific types of workflows or components that necessitate more frequent updates or checks for version compatibility?

Any insights, suggestions, or guidance on how to better manage server versions and workflow compatibility would be greatly appreciated!

Thank you!
Leila

2

Hi @Leila69 ,

The workflow compatibility error can be resolved by disabling the “Reject future workflows” option on KNIME Server via the WebPortal’s Administration → Configuration tab:

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Usually, we recommend users to have their AP (Analytics Platform) and their KNIME Server’s Executor on the same, or at least close to the same version to avoid compatibility issues.
While disabling the option above ensures the workflows can be executed on older Executor versions, if those workflows contain nodes/features/settings which are not yet present on the older Executor version, the workflow can fail or not provide the expected outcome.

To determine when an Executor update could be needed to ensure full compatibility, we recommend reading through our AP’s Release notes and changelogs section in its Installation Guide and compare the main differences between the two product versions.

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