Warning: Server groups are unbalanced

Couchbase Server
1

Hi

Facing below warning, what can be checked or improved?

Warning: Server groups are unbalanced; this may result in uneven load distrubution.

Is there any more information about this warning message? Can only find this related https://review.couchbase.com/c/ns_server/+/164509

Please find screenshot attached

2022-10-11 09_18_23-2022-10-10 16_25_28-chs-prod-shared - Enterprise Edition 7.1.1 build 3175 — Mozi
2022-10-11 09_18_23-2022-10-10 16_25_28-chs-prod-shared - Enterprise Edition 7.1.1 build 3175 — Mozi1799×898 143 KB

Thanks in advance.

PS: typo on distrubution? :wink:

3

Hi, thanks for answering. I don’t seem to find any reference on this warning in this page?

image
image1148×980 85.3 KB

image
image1163×985 84.3 KB

Please clarify?

Thanks again!

4

This is the error to message mapping done in in the UI:

https://github.com/couchbase/ns_server/blob/af4512f93d0f2768024ad7058753761b1a3d44b9/priv/public/ui/app/components/mn_filters.js#L72

And this is where it is raised:

https://github.com/couchbase/ns_server/blob/3036d890696ac235a343e28cc5aa930a9b0be9b0/src/ns_bucket.erl#L626

because the server groups do not all have an equal number of member nodes.

From the screenshots, group C has more nodes (5) than B (2) or A (3).

So the message is telling you that the different groups will handle load differently because of their size differences.

HTH.

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