# Task Execution Hierarchy

**URL:** <https://community.influxdata.com/t/task-execution-hierarchy/23974>\
**Category:** InfluxDB 2\
**Created:** [February 22, 2022, 5:46pm UTC](https://community.influxdata.com/t/task-execution-hierarchy/23974 "2022-02-22T17:46:34Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![cruder](https://sea1.discourse-cdn.com/flex023/user_avatar/community.influxdata.com/cruder/32/9533_2.png) [@cruder](https://community.influxdata.com/u/cruder)\
**Post date:** [February 22, 2022, 5:46pm UTC](https://community.influxdata.com/t/task-execution-hierarchy/23974/1 "2022-02-22T17:46:35Z")

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Hello!

I am trying to create tasks that are down-sampling raw data into certain timeframes aggregations (1,5,15,30min), tag them and put into one bucket.  
Creating the 1 min aggregated data works fine using every:1, offset:1.  
For each other timeframe (5, 15, 30, 1h,…) I decided to use previously aggregated data ( 5x 1min for 5min, 3x5min for 15min) and created new tasks for each aggregation.

My question is:  
Is it necessary to assign incremental offsets to each of the consequent tasks (1min = 1s, 5min = 2s, 15min = 3s, … ) in order for them to work correctly?? (Only by doing that, the data is complete, otherwise the aggregations are incorrect - missing datapoints i suppose)

Is there for example a way of assigning hierarchy to the tasks (1min-\>5min\>15min task) / use the concurrency parameter to chain them in the right order without using the offset?

They take fractions of seconds, but whenever task executions overlap (etc. at 12:15 : 1min + 5min +15 min are fired) the data is incomplete unless I assign the incrementing offsets to each of them initially.

I just spent a lot of time trying to figure out a way to do it and learn to what extent influx can deal with such scenario.

Thank you in advance for your help!

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**Author:** ![Anaisdg](https://sea1.discourse-cdn.com/flex023/user_avatar/community.influxdata.com/anaisdg/32/6401_2.png) [@Anaisdg](https://community.influxdata.com/u/Anaisdg)\
**Post date:** [February 22, 2022, 6:03pm UTC](https://community.influxdata.com/t/task-execution-hierarchy/23974/2 "2022-02-22T18:03:01Z")

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Hello @cruder,  
Ooh very cool question let me ask around.

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**Author:** ![Anaisdg](https://sea1.discourse-cdn.com/flex023/user_avatar/community.influxdata.com/anaisdg/32/6401_2.png) [@Anaisdg](https://community.influxdata.com/u/Anaisdg)\
**Post date:** [February 24, 2022, 5:55pm UTC](https://community.influxdata.com/t/task-execution-hierarchy/23974/3 "2022-02-24T17:55:33Z")

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Hello @cruder,  
I don’t think there’s anyway to force tasks dependency with Flulx.  
But yes you can force it with offsets like you’re doing.  
But I encourage you to make a feature request.

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**Author:** ![cruder](https://sea1.discourse-cdn.com/flex023/user_avatar/community.influxdata.com/cruder/32/9533_2.png) [@cruder](https://community.influxdata.com/u/cruder)\
**Post date:** [February 25, 2022, 12:21pm UTC](https://community.influxdata.com/t/task-execution-hierarchy/23974/4 "2022-02-25T12:21:31Z")

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Hello @Anaisdg,

Thanks for the response!  
I will try to find a different way of executing the tasks in a desired order / right time 🙂