Camunda 8 Attachments/Comments

Hello

We are currently evaluating if a migration to Camunda 8 makes sense for us.

We made extensive use of Attachments and Comments (ACT_HI_COMMENTS) and cant find much info about these data structures im Camunda 8.

In Camunda 7 we link attachments to process instances. This however seems not possible in Camunda 8. I only found the Documents API but theres no mention of linking process instance ids to documents.

I can’t find any info about comments either. Are both features deprecated and unusable in C8?

Thanks in advance

Hi @kartenhaus - I had a chat with some of our engineers who work on C7 → C8 migrations and got some feedback from them:

  • Comments: comments aren’t supported in C8 currently, but they don’t see it as a migration blocker. We do have adding comments to user tasks on the roadmap for a future release, but it isn’t committed to a specific release at this time. Do you have a C7EE license already? If so, I might reach out to your AE/CSM to open a conversation about alternatives in C8 that would fulfill your requirement.

  • Attachments: you are correct that the next release (8.7) will support native document handling in the process engine. You can also use connectors (such as the file storage connector) to manage your documents in the cloud (or on-prem, of course). One issue many customers had with C7 attachments was scaling, so C8 solves for this differently, allowing you to store the document where you need it rather than in the RDBMS with all the process data.

We do have teams in place who specialize in C7 migrations. It might be useful to reach out through your AE/CSM to discuss what your migration blockers might be and what those solutions look like in C8.