release-26.1: kvserver: remove TestProcessSplitAfterRightHandSideHasBeenRemoved #160645
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The test had a race condition between lease transfer verification and partition activation. After transferring the lease from n1 to n3, there was a window where n1 could re-acquire the lease before the partition was activated, causing the subsequent increment to hang waiting for a slow proposal on the now-partitioned n1. I spent a couple of hours trying to deflake this, but whenever you fix one thing, another springs up. This test is not maintainable, and is highly complex. The [split_pre_apply] tests cover this functionality. Testing it from "far away" does give some extra coverage, but at a steep price for maintainability, which we are not ready to pay, so the test is removed in this commit. [split_pre_apply]: https://github.com/tbg/cockroach/blob/7270a51a0430999661ed15320527ccc04d796a14/pkg/kv/kvserver/testdata/replica_lifecycle/split_pre_apply.txt Fixes (on 26.1) cockroachdb#159676 Fixes cockroachdb#158295.
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Backport 1/1 commits from #159882 on behalf of @tbg.
The test had a race condition between lease transfer verification and
partition activation. After transferring the lease from n1 to n3, there
was a window where n1 could re-acquire the lease before the partition
was activated, causing the subsequent increment to hang waiting for a
slow proposal on the now-partitioned n1.
I spent a couple of hours trying to deflake this, but whenever you fix
one thing, another springs up. This test is not maintainable, and is
highly complex.
The split_pre_apply tests cover this functionality. Testing it from "far
away" does give some extra coverage, but at a steep price for maintainability,
which we are not ready to pay, so the test is removed in this commit.
Fixes (on 26.1) #159676
Fixes #158295.
Release justification: flake fix