We have pg11 data folder growing by more than 100gb each day, even after we turned of our application which writes data to Postgres. The total table size from query using total_relationship_size come to 300gb but directory folder is consuming more than 1 TB of data. We keep seeing files getting accumulated in data folder 'XXXX'.1 , 'XXXX'.2 . Each of these files occupy 1gb of data.
What can cause the pg data directory to keep growing this way.