EmergencyReparentShard: support ignoring minority/count of lagging tablets

go/cmd/vtorc/cli/cli.go

@@ -17,6 +17,8 @@ limitations under the License.
 package cli
 
 import (
+	"os"
+
 	"github.com/spf13/cobra"
 
 	"vitess.io/vitess/go/acl"
@@ -58,6 +60,10 @@ func run(cmd *cobra.Command, args []string) {
 		inst.EnableAuditSyslog()
 	}
 	config.MarkConfigurationLoaded()
+	if err := config.Validate(); err != nil {
+		log.Errorf("Failed to validate config: %+v", err)
+		os.Exit(1)
+	}
 
 	// Log final config values to debug if something goes wrong.
 	log.Infof("Running with Configuration - %v", debug.AllSettings())

go/flags/endtoend/vtorc.txt

@@ -113,4 +113,6 @@ Flags:
       --v Level                                                     log level for V logs
   -v, --version                                                     print binary version
       --vmodule vModuleFlag                                         comma-separated list of pattern=N settings for file-filtered logging
+      --wait-for-relaylogs-mode string                              Specifies the number of tablets to wait for relaylog applying during an EmergencyReparentShard action. ALL: wait for all tablets, MAJORITY: wait for a majority of tablets, COUNT: wait for an exact number of tablets (using --wait-for-relaylogs-tablet-count flag) (default "ALL")
+      --wait-for-relaylogs-tablet-count int                         Specifies the exact number of tablets to wait for relaylogs during EmergencyReparentShard actions. This setting must be > 0 when --wait-for-relaylogs-mode=COUNT is set
       --wait-replicas-timeout duration                              Duration for which to wait for replica's to respond when issuing RPCs (default 30s)