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Find earliest time of when the process starts using streamstats?


Hi, I have a particular service which we triggered occasionally and I would like to know the earliest time of every time it gets kick off for e.g 

For e.g following is the data:

_time service message Host
2022-07-08T05:47:22.029Z abc calling service 123 host123.com
2022-07-08T05:49:17.029Z abc Talking to service 123 host123.com
abc calling service 123 host123.com
abc Talking to service 123 host123.com


The expected data outcome would be:

Host starting_time
host123.com 2022-07-08T05:47:22.029Z
host123.com 2022-10-11T01:00:39.029Z


I am aware I have to use streamstats somewhere. But given all the other fields are identical earliest time by host wont work. Also I am backdating the data for 6 months so I need something that is bit efficient. I only care about starting_time of the service of each time the service starts.

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| where message = "calling service 123"
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