[WIP] perf(core): Add a new mutation pipeline for per predicate runners

TESTING.md

@@ -87,7 +87,7 @@ programmatic control over local Dgraph clusters. Most newer integration2 and upg
 
 ## Module Structure
 
-The main module is `github.com/hypermodeinc/dgraph`
+The main module is `github.com/dgraph-io/dgraph`
 
 The codebase is organized into several key packages:
 

dgraph/cmd/alpha/run.go

@@ -796,6 +796,7 @@ func run() {
 	x.Config.NormalizeCompatibilityMode = featureFlagsConf.GetString("normalize-compatibility-mode")
 	enableDetailedMetrics := featureFlagsConf.GetBool("enable-detailed-metrics")
 	x.WorkerConfig.SlowQueryLogThreshold = featureFlagsConf.GetDuration("log-slow-query-threshold")
+	x.WorkerConfig.MutationsPipelineThreshold = int(featureFlagsConf.GetInt64("mutations-pipeline-threshold"))
 
 	x.PrintVersion()
 	glog.Infof("x.Config: %+v", x.Config)

graphql/admin/admin.go

@@ -655,6 +655,10 @@ func newAdminResolver(
 			return
 		}
 
+		if len(pl.Postings) == 2 && string(pl.Postings[0].Value) == "_STAR_ALL" {
+			pl.Postings = pl.Postings[1:]
+		}
+
 		// There should be only one posting.
 		if len(pl.Postings) != 1 {
 			glog.Errorf("Only one posting is expected in the graphql schema posting list but got %d",