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ITRS Analytics (Obcerv) - What causes Query Service Performance Errors

If the following errors appear in the web-console

And similar errors are logged

2024-12-10 08:34:04.121 UTC: @,app= LOG: started streaming WAL from primary at 288E/77000000 on timeline 20

2024-12-10 08:34:04.121 UTC: @,app= FATAL: could not receive data from WAL stream: ERROR: requested WAL segment 000000140000288E00000077 has already been removed

This could be an issue with the disk storage being used. ITRS Analytics (Obcerv) has a requirement that the local-storage option should be fast SSD volumes and not local disk drives. You should check the storage class information, this will be available in a future release via the Ingestion App.

https://docs.itrsgroup.com/docs/obcerv/platform/current/prerequisites/prepare-kubernetes-cluster/index.html#Heading-configure-storage-classes