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Load balancing scheme in Trino gateway? #84

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pulkitkalia1994 opened this issue Oct 30, 2023 · 2 comments

pulkitkalia1994 commented Oct 30, 2023

What's the load balancing scheme used by Trino gateway? And is there a way to change it?

lambrospetrou commented Oct 31, 2023 •

edited

By default the gateway picks a random cluster within the matched routing group. See https://github.com/trinodb/trino-gateway/blob/main/gateway-ha/src/main/java/io/trino/gateway/ha/handler/QueryIdCachingProxyHandler.java#L249 and https://github.com/trinodb/trino-gateway/blob/main/gateway-ha/src/main/java/io/trino/gateway/ha/router/RoutingManager.java#L91

I don't think this can change. You can play with the routing groups and the explicit header to route the query to certain clusters though.

vishalya mentioned this issue

Configure the router policy via router provider module #98

Merged

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mosabua commented Jan 24, 2024

@vishalya can you potentially take this on to document as part of the update for the linked PR ?

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