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Status No status
Product AVEVA™ Adapters
Categories General
Created by Guest
Created on Apr 15, 2025

RELATED IDEAS

Allow client-level failover on a per data source component level

Currently the client-level failover for Adapters occur on a per Adapter level. Which means that for instances where multiple data sources are configured, in some circumstances failover may result in an instance with a bad connection to a particular data source becoming primary, despite the other instance still having a good connection.


The only way to get the client-failover mechanism to be separated by data source is to either install multiple instances on multiple machines or use Docker containers (currently only supported on Linux).


Example:

Adapter1 & Adapter2 configured in failover with three data source components configured with equal number of streams.

Component1 -> DataSource1

Component2 -> DataSource2

Component3 -> DataSource3


On Adapter 1 - connection to DataSource1 & DataSource2 goes bad, but DataSource3 is good

On Adapter 2 - connection to DataSource3 is bad, but DataSource1 & DataSource2 is good


This will result in Adapter2 being the primary and data flow from DataSource3 will be interrupted.

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  • Guest
    Aug 12, 2026

    That is quite the oversight in the failover mechanism, but good catch! You never want your connection to a data source to fail just because using the other AVEVA Adapter instance is the overall better choice. Why pick the lesser of 2 evils when you can just avoid the evil?

    Reply