release-25.4.1-rc: backfill: skip external tenant under deadlock in vector backfill test #157962
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`TestVectorIndexMergingDuringBackfillWithPrefix` is rather intensive, and we've seen a couple of failures due to general overload in the external-process mode under deadlock, so we'll just disable that mode under deadlock. Alternative idea I had was to exempt the tenant from rate limiting, but I wasn't able to reproduce the failure on gceworker, so I couldn't verify that it worked and decided to not go with it. Release note: None
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Thanks for opening a backport. Before merging, please confirm that the change does not break backwards compatibility and otherwise complies with the backport policy. Include a brief release justification in the PR description explaining why the backport is appropriate. All backports must be reviewed by the TL for the owning area. While the stricter LTS policy does not yet apply, please exercise judgment and consider gating non-critical changes behind a disabled-by-default feature flag when appropriate. |
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There is some merge skew - will create backport of #157961 when that merges. |
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Backport 1/1 commits from #157804 on behalf of @yuzefovich.
TestVectorIndexMergingDuringBackfillWithPrefixis rather intensive, and we've seen a couple of failures due to general overload in the external-process mode under deadlock, so we'll just disable that mode under deadlock. Alternative idea I had was to exempt the tenant from rate limiting, but I wasn't able to reproduce the failure on gceworker, so I couldn't verify that it worked and decided to not go with it.Fixes: #156995.
Release note: None
Release justification: test-only change.