Merge #108111 #108339 #108346

108111: changefeedccl: enable changefeed tests on ARM r=samiskin a=samiskin

Resolves #103888

This change enables all changefeed tests on ARM except for the Kafka OAuth test.  There are only Kafka 3 ARM binaries available, but the OAuth test requires Kafka 2 for the broker setup so just that test is exempted from ARM..

Release note: None

108339: kv: fix Replica stringer and SafeFormatter implementations r=erikgrinaker a=nvanbenschoten

This commit fixes the Replica stringer and SafeFormatter implementations so that they correctly include the range descriptor string. This was unintentionally broken by 897d6e, which changed the return value of `atomicDescString.get`.

Before this change, the stringer implementation looked something like:
```
[n1,s2,r&{3/4:{a-b} 3/4:{a-b} 3/4}]
```
The confusing `&{...}` portion was the internal structure `atomicDescInfo`.

After, it looks like:
```
[n1,s2,r3/4:{a-b}]
```

Epic: None
Release note: None

108346: rttanalysis: relax expected range for drop_3_roles r=rafiss a=rafiss

This test is mostly meant to assert an uppser bound, so a lower number is better. Some runs of the test in CI take 43 round trips.

fixes #108322
backport fixes #108292
Release note: None

Co-authored-by: Shiranka Miskin <[email protected]>
Co-authored-by: Nathan VanBenschoten <[email protected]>
Co-authored-by: Rafi Shamim <[email protected]>

pkg/bench/rttanalysis/testdata/benchmark_expectations

@@ -41,7 +41,7 @@ exp,benchmark
 17,DropDatabase/drop_database_3_tables
 26,DropRole/drop_1_role
 36,DropRole/drop_2_roles
-45,DropRole/drop_3_roles
+42-45,DropRole/drop_3_roles
 15,DropSequence/drop_1_sequence
 17,DropSequence/drop_2_sequences
 19,DropSequence/drop_3_sequences

pkg/cmd/roachtest/cluster.go

@@ -740,7 +740,7 @@ func MachineTypeToCPUs(s string) int {
 		if _, err := fmt.Sscanf(s, "n2-standard-%d", &v); err == nil {
 			return v
 		}
-		if _, err := fmt.Sscanf(s, "n2-standard-%d", &v); err == nil {
+		if _, err := fmt.Sscanf(s, "t2a-standard-%d", &v); err == nil {
 			return v
 		}
 		if _, err := fmt.Sscanf(s, "n2-highcpu-%d", &v); err == nil {

pkg/cmd/roachtest/cluster_test.go

@@ -168,6 +168,12 @@ func TestClusterMachineType(t *testing.T) {
 		{"n2-standard-32", 32},
 		{"n2-standard-64", 64},
 		{"n2-standard-96", 96},
+		{"t2a-standard-2", 2},
+		{"t2a-standard-4", 4},
+		{"t2a-standard-8", 8},
+		{"t2a-standard-16", 16},
+		{"t2a-standard-32", 32},
+		{"t2a-standard-48", 48},
 	}
 	for _, tc := range testCases {
 		t.Run(tc.machineType, func(t *testing.T) {