Flaky `TestRuntimeReconfigGrowClusterSize `

[ahrtr]

Which Github Action / Prow Jobs are flaking?

/home/prow/go/src/github.com/etcd-io/etcd/bin/etcdctl (/home/prow/go/src/github.com/etcd-io/etcd/bin/etcdctl_--endpoints=http://localhost:20000,http://localhost:20005_member_promote_5d2dab3fee7266f0_-w_json) (58870): {"level":"warn","ts":"2025-01-17T04:53:28.794025Z","logger":"etcd-client","caller":"v3@v3.6.0-alpha.0/retry_interceptor.go:65","msg":"retrying of unary invoker failed","target":"etcd-endpoints://0x9e88b48/localhost:20000","method":"/etcdserverpb.Cluster/MemberPromote","attempt":0,"error":"rpc error: code = FailedPrecondition desc = etcdserver: can only promote a learner member which is in sync with leader"}
/home/prow/go/src/github.com/etcd-io/etcd/bin/etcdctl (/home/prow/go/src/github.com/etcd-io/etcd/bin/etcdctl_--endpoints=http://localhost:20000,http://localhost:20005_member_promote_5d2dab3fee7266f0_-w_json) (58870): Error: etcdserver: can only promote a learner member which is in sync with leader
    runtime_reconfiguration_test.go:181: 
        	Error Trace:	/home/prow/go/src/github.com/etcd-io/etcd/tests/e2e/runtime_reconfiguration_test.go:181
        	            				/home/prow/go/src/github.com/etcd-io/etcd/tests/e2e/runtime_reconfiguration_test.go:78
        	Error:      	Received unexpected error:
        	            	match not found.  Set EXPECT_DEBUG for more info Errs: [unexpected exit code [1] after running [/home/prow/go/src/github.com/etcd-io/etcd/bin/etcdctl --endpoints=http://localhost:20000,http://localhost:20005 member promote 5d2dab3fee7266f0 -w json]], last lines:
        	            	{"level":"warn","ts":"2025-01-17T04:53:28.794025Z","logger":"etcd-client","caller":"v3@v3.6.0-alpha.0/retry_interceptor.go:65","msg":"retrying of unary invoker failed","target":"etcd-endpoints://0x9e88b48/localhost:20000","method":"/etcdserverpb.Cluster/MemberPromote","attempt":0,"error":"rpc error: code = FailedPrecondition desc = etcdserver: can only promote a learner member which is in sync with leader"}
        	            	Error: etcdserver: can only promote a learner member which is in sync with leader
        	Test:       	TestRuntimeReconfigGrowClusterSize/grow_cluster_size_from_1_to_3_with_learner
    logger.go:146: 2025-01-17T04:53:28.799Z	INFO	closing test cluster...
    logger.go:146: 2025-01-17T04:53:28.799Z	INFO	stopping server...	{"name": "TestRuntimeReconfigGrowClusterSizegrow_cluster_size_from_1_to_3_with_learner-test-0"}

Refer to https://prow.k8s.io/view/gs/kubernetes-ci-logs/pr-logs/pull/etcd-io_etcd/19198/pull-etcd-e2e-386/1880111907646476288

Which tests are flaking?

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Github Action / Prow Job link

No response

Reason for failure (if possible)

No response

Anything else we need to know?

No response