[Kapacitor] Stream task with two influxdbout nodes

Systems
1

I have a task with 4 UDFs. After two of them I would like to store the result in a measurement and after that I would like to continue the processing with the two remaining UDFs and store there result in a different measurement.
I tried the following things:

1.:

 stream
|from()
    .measurement('Beacon')
(at)smooth_rssi()
(at)calculate_distances()
|influxDBOut()
    .database('Beacons')
    .measurement('Distances')
(at)determine_positions()
smooth_positions()
|influxDBOut()
    .database('Beacons')
    .measurement('DevicePositions')

=> Syntax error

2.:

var firstresult = stream
|from()
.measurement(‘Beacon’)
(at)smooth_rssi()
(at)calculate_distances()
firstresult
|influxDBOut()
.database(‘Beacons’)
.measurement(‘Distances’)

firstresult
(at)determine_positions()
(at)smooth_positions()
|influxDBOut()
.database(‘Beacons’)
.measurement(‘DevicePositions’)

=> gets totally wrong input in third UDF

3: Two Tasks. Second is listening on first measurement.
=> After a few minutes the second Task gets the Points in a wrong order.

Is there a better way to do this?

2

Hello @roblen,
Welcome! Can you please share your 3rd script with Two Tasks?
And some input and output points to illustrate what you mean by

After a few minutes the second Task gets the Points in a wrong order.

along with your expected output?

Thank you,
Anais

3

Hey @roblen

I think you might be able to use clustering to do this. I do something similar with my stream tasks, wriiting to different databases at different points inthe script. Hopefully this link will help

Currently running this on Influx 1.5.2 and Kapacitor 1.5

4

Hey,
thank you for answering.

I had a bug in one UDF.

After fixing that bug, solution 2 solves my problem.