Root Cause

The issue was caused by a configuration setting related to how freshly indexed data was handled. This setting was inadvertently set to cause a delay, which affected the platform's stability during reindexing.

Resolution

To resolve the issue, the system was reverted back to using the previous data index, which restored stability.

Action Plan

Moving forward, a new process for gradual rollout will be implemented in a different environment to prevent similar issues. Additionally, a maintenance status page will be opened prior to any such activities.