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Detected issue in process SLDataGateway in the RefreshThread

Solved905 views12th October 2021SLDataGateway Threads
1
Ciprian Moga [SLC] [DevOps Member]318 12th October 2021 0 Comments

Hi,

What is the role of the “RefreshThread” in the context of the SLDataGateway process and what could be causing it to malfunction?

Thanks in advance,

Ciprian Moga [SLC] [DevOps Member] Selected answer as best 12th October 2021

1 Answer

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Brent [SLC]1.57K Posted 12th October 2021 1 Comment

Hey Cirpian,

The RefreshThread in SLDataGateway is responsible to keep the most recent datapoint for active trended parameters alive in the cassandra database. This is done so that stable parameters which do not write updates to a database often can still display trending and are not removed due to the TTL being expired.

It is a bit tricky to say what a cause for malfunction is without error. But generally it is issue with writing or contancting the cassandra database, which should be logged in SLDBConnection.

Ciprian Moga [SLC] [DevOps Member] Posted new comment 12th October 2021
Ciprian Moga [SLC] [DevOps Member] commented 12th October 2021

Thank you for the detailed answer, Brent. 🙂

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