Getting error "Returning empty FeatureFlag Set from Fx3 Service" on Confluence
Platform Notice: Data Center Only - This article only applies to Atlassian products on the Data Center platform.
Note that this KB was created for the Data Center version of the product. Data Center KBs for non-Data-Center-specific features may also work for Server versions of the product, however they have not been tested. Support for Server* products ended on February 15th 2024. If you are running a Server product, you can visit the Atlassian Server end of support announcement to review your migration options.
*Except Fisheye and Crucible
Summary
In the Confluence application logs, it is observed errors related to "Returning empty FeatureFlag Set from Fx3 Service"
Diagnosis
In the atlassian-confluence.log , some of the following entries can be observed every 5 minutes:
2023-10-10 08:08:33,561 ERROR [pool-22-thread-1] [agent.service.featureflag.Fx3OkhttpAdapter] post Error occurred while making post request with message : stream was reset: NO_ERROR . Returning empty FeatureFlag Set from Fx3 Service
2023-10-10 11:27:39,474 ERROR [pool-30-thread-1] [agent.service.featureflag.Fx3OkhttpAdapter] post Error occurred while making post request with message : timeout . Returning empty FeatureFlag Set from Fx3 Service
Cause
The Fx3 Service which class agent.service.featureflag.Fx3OkhttpAdapter is part of, belongs to our Confluence Cloud Migration Assistant plugin (a.k.a CCMA). CCMA connects to the Atlassian Marketplace, Atlassian Migration Service and some other domains to display the options in the UI. The full list of domains and connectivity needed are listed in our KB: Connect the Confluence Cloud Migration Assistant to Atlassian cloud
If Confluence runs in a restricted network without internet access, these type of errors might be reported periodically. This is reviewed under:
MIG-1532 - Getting issue details... STATUS
Solution
The following actions might help to mitigate the issue, but there is not guarantee of success if you are in a version where bug MIG-1532 - Getting issue details... STATUS was not fixed.
Please follow these actions:
- First of all, update your CCMA plugin version to the latest version available.
- Browse to General Configuration > Manage Apps
- Search for Confluence Cloud Migration Assistant and click on Update
- If you are not using CCMA plugin, you can also consider to disable it.
- Browse to General Configuration > Manage Apps
- Search for Confluence Cloud Migration Assistant and click on Disable or Uninstall