in kapacitor, if we have a stream of data that we’re applying different tasks to, and each task is doing…

```
stream
| from().measurement('some_measurement')
| where(lambda: 'some criteria')
| window().period('10s').every('1s')
| count('timestamp')
...
```

would there be a negative impact, performance-wise, in changing this to

```
stream
| from().measurement('some_measurement')
| window().period('10s').every('1s')
| where(lambda: 'some criteria')
| count('timestamp')
...
```

Behaviorally this would make it so that when there are no matches to ‘some criteria’ a count of 0 would be emitted so we can take action when there are zero matches (assuming the stream itself is noisy enough to have non-matching points on a regular basis)