I could see queries like DISCARD ALL is idle for more than 5minutes (we are using pgbouncer).
Why is it idle for more than 5mns? I read about pgbouncer and could not understand this thing. If resetting a connection using query becomes one idle connection, I don't understand the pooling system here
In your case, "Idle" just means that DISCARD ALL was the last statement that the pid executed. Now, it's just doing nothing, because there's nothing to do. IOW, this is just fine. No need to worry.