any solutions to stop a long running map reduce

Undeploy or delete deployments. Don't remember what it took. It will not spawn new map/reduce instances when the governance runs out of the currently running ones.

TY!

you can also create an intentional kill switch using a script param. A simple boolean 'abort' flag would do - you check for that periodically in your code (e.g. start of

map()

) and if set, return without processing.

good point especially for scripts that are meant to process large datasets and tend to run for a long time