I have a three-node search head cluster, when I create a field extraction through the GUI, it takes hours for it to become active. This used to take less than 5 minutes, any ideas why this could be happening?
Try adding ... | extract reload=true to your search to pull in the changes immediately, but this only works for you. If you need it to work for everybody, try this app (thanks @mus):
Add-on Debug Refresh: https://splunkbase.splunk.com/app/1871/