First, fix whatever it was that corrupted your index. Then log into Jira as an admin, go to the indexing page and tell it to run a full index (locking all the users out).
A full locking index essentially wipes out your current index and rebuilds a good one from scratch. Assuming the problem is not in the code that creates the index data (it's possible to create issue searchers and fields that can cause rubbish to go into the index)
Update: https://community.atlassian.com/t5/Atlassian-Cloud-Migration/Data-Residency-Comes-to-Australia-amp-Update-on-Data-Residency/ba-p/1825538 We have just released data residency for Austra...
Connect with like-minded Atlassian users at free events near you!Find an event
Connect with like-minded Atlassian users at free events near you!
Unfortunately there are no Community Events near you at the moment.Host an event
You're one step closer to meeting fellow Atlassian users at your local event. Learn more about Community Events