add more log

Signed-off-by: Wenqi Mou <wenqimou@gmail.com>

br/pkg/backup/client.go

@@ -143,14 +143,14 @@ func (l *MainBackupLoop) CollectStoreBackupsAsync(
 			cases = append(cases, reflect.SelectCase{Dir: reflect.SelectRecv, Chan: reflect.ValueOf(ch)})
 		}
 
-		remainingProducers := len(cases)
-		logutil.CL(ctx).Info("start wait store backups", zap.Int("remainingProducers", remainingProducers))
-		for remainingProducers > 0 {
+		remainingStores := len(cases)
+		logutil.CL(ctx).Info("start to wait store backups", zap.Int("remainingStores", remainingStores))
+		for remainingStores > 0 {
 			chosen, value, ok := reflect.Select(cases)
 			if !ok {
 				// The chosen channel has been closed, so zero out the channel to disable the case
 				cases[chosen].Chan = reflect.ValueOf(nil)
-				remainingProducers -= 1
+				remainingStores -= 1
 				continue
 			}
 
@@ -278,7 +278,7 @@ mainLoop:
 				}
 				if storeBackupInfo.One != 0 {
 					storeID := storeBackupInfo.One
-					logutil.CL(mainCtx).Info("receive notifaction and retry backup on this store",
+					logutil.CL(mainCtx).Info("receive notification and retry backup on this store",
 						zap.Uint64("storeID", storeID), zap.Uint64("round", round))
 					store, err := bc.mgr.GetPDClient().GetStore(mainCtx, storeID)
 					if err != nil {

br/pkg/backup/store.go

@@ -219,7 +219,7 @@ func startBackup(
 				retry := -1
 				return utils.WithRetry(ectx, func() error {
 					retry += 1
-					logutil.CL(ectx).Info("backup to store", zap.Uint64("storeID", storeID),
+					logutil.CL(ectx).Info("back up range to store", zap.Uint64("storeID", storeID),
 						zap.Int("retry", retry), zap.Int("reqIndex", reqIndex))
 					return doSendBackup(ectx, backupCli, bkReq, func(resp *backuppb.BackupResponse) error {
 						// Forward all responses (including error).