Large amount of unknown records in sys_choice table

[Jonas23]

While troubleshooting performance complaints when opening a specific catalog item on the Service Portal, I noticed our sys_choice table contained more than 400,000 records.
After looking closer, there are more than 300,000 records which all contain a variation of "sys_hub_action_output" or "sys_hub_action_input".

These were all created by system on the same weekend we upgraded from quebec patch 7h2 to rome patch2.
Where are these records coming from? They are causing a noticable performance impact on a few of our requests on our portal

[eumak]

Hello Jonas,

May be this issue has occurred after the upgrade , You can ask your team to raise a HI ticket to see the BG logs. 

Cheers..!
Happy Learning:)
Tushar

[Jonas23]

Hi, I figured as much yeah, but I'd like to know what they are, and if it is safe to remove them, as they are causing major performance issues.

[eumak]

Short answer: No, it is not safe to delete data without knowing where it came from.

I can't make any assumptions without seeing the data and logs, so an HI ticket will be the only way to get a resolution. 

Cheers..!
Keep Learning:)
Tushar

[Musab Rasheed]

Hello Jonas,

Looks like it is related to Flow designer, I suggest create HI ticket with service now team before deleting anything, once they are ok go ahead and delete. Mark my answer as correct if that helps.

Regards