rollback toml config changes

Signed-off-by: artem_danilov <[email protected]>

cmd/tidb-server/main.go

@@ -86,7 +86,6 @@ import (
 	"github.com/prometheus/client_golang/prometheus/push"
 	"github.com/tikv/client-go/v2/tikv"
 	"github.com/tikv/client-go/v2/txnkv/transaction"
-	"github.com/tikv/pd/client/pkg/circuitbreaker"
 	"go.uber.org/automaxprocs/maxprocs"
 	"go.uber.org/zap"
 )
@@ -804,15 +803,6 @@ func setGlobalVars() {
 
 	atomic.StoreUint64(&transaction.CommitMaxBackoff, uint64(parseDuration(cfg.TiKVClient.CommitTimeout).Seconds()*1000))
 	tikv.SetRegionCacheTTLSec(int64(cfg.TiKVClient.RegionCacheTTL))
-	tikv.ChangePdRegionMetaCircuitBreakerSettings(func(config *circuitbreaker.Settings) {
-		s := cfg.TiKVClient.CircuitBreakerSettingsList.PDRegionsMetadata
-		// config.ErrorRateThreshold is controlled by tidb_cb_pd_metadata_error_rate_threshold_pct sysvar
-		config.ErrorRateWindow = time.Duration(s.ErrorRateEvaluationWindowSeconds) * time.Second
-		config.MinQPSForOpen = uint32(s.MinQPSToOpen)
-		config.CoolDownInterval = time.Duration(s.CooldownIntervalSeconds) * time.Second
-		config.HalfOpenSuccessCount = uint32(s.HalfOpenSuccessCount)
-	})
-
 	domainutil.RepairInfo.SetRepairMode(cfg.RepairMode)
 	domainutil.RepairInfo.SetRepairTableList(cfg.RepairTableList)
 	executor.GlobalDiskUsageTracker.SetBytesLimit(cfg.TempStorageQuota)

pkg/config/config_test.go

@@ -743,11 +743,6 @@ grpc-keepalive-timeout = 0.2
 [tikv-client.async-commit]
 keys-limit=123
 total-key-size-limit=1024
-[tikv-client.circuit-breaker.pd-region-metadata]
-error-rate-evaluation-window-seconds = 50
-min-qps-to-open=15
-cooldown-interval-seconds=25
-half-open-success-count=5
 [experimental]
 allow-expression-index = true
 [isolation-read]
@@ -789,11 +784,6 @@ max_connections = 200
 	require.Equal(t, uint64(1024), conf.TiKVClient.AsyncCommit.TotalKeySizeLimit)
 	require.Equal(t, uint(128), conf.TiKVClient.MaxBatchSize)
 	require.Equal(t, uint(6000), conf.TiKVClient.RegionCacheTTL)
-	cbSettings := conf.TiKVClient.CircuitBreakerSettingsList.PDRegionsMetadata
-	require.Equal(t, uint(50), cbSettings.ErrorRateEvaluationWindowSeconds)
-	require.Equal(t, uint(15), cbSettings.MinQPSToOpen)
-	require.Equal(t, uint(25), cbSettings.CooldownIntervalSeconds)
-	require.Equal(t, uint(5), cbSettings.HalfOpenSuccessCount)
 	require.Equal(t, int64(0), conf.TiKVClient.StoreLimit)
 	require.Equal(t, int64(8192), conf.TiKVClient.TTLRefreshedTxnSize)
 	require.Equal(t, time.Millisecond*200, conf.TiKVClient.GetGrpcKeepAliveTimeout())