SSZ: temporarily disable roots cache until cache issues can be resolv…

…ed (#4407)

* temporarily disable roots cache until cache issues can be resolved

* Also use custom ssz for spectests

Co-authored-by: prylabs-bulldozer[bot] <58059840+prylabs-bulldozer[bot]@users.noreply.github.com>

shared/params/spectest/BUILD.bazel

@@ -6,7 +6,10 @@ go_library(
     srcs = ["config.go"],
     importpath = "github.com/prysmaticlabs/prysm/shared/params/spectest",
     visibility = ["//visibility:public"],
-    deps = ["//shared/params:go_default_library"],
+    deps = [
+        "//shared/featureconfig:go_default_library",
+        "//shared/params:go_default_library",
+    ],
 )
 
 go_test(

shared/params/spectest/config.go

@@ -4,11 +4,15 @@ import (
 	"errors"
 	"fmt"
 
+	"github.com/prysmaticlabs/prysm/shared/featureconfig"
 	"github.com/prysmaticlabs/prysm/shared/params"
 )
 
 // SetConfig sets the global params for spec tests depending on the option chosen.
 func SetConfig(config string) error {
+	c := featureconfig.Get()
+	c.EnableCustomStateSSZ = true
+	featureconfig.Init(c)
 	switch config {
 	case "minimal":
 		newConfig := params.MinimalSpecConfig()

shared/stateutil/state_root.go

@@ -24,7 +24,10 @@ func init() {
 		// 100,000 roots will take up approximately 3 MB in memory.
 		BufferItems: 64, // number of keys per Get buffer.
 	})
-	globalHasher = &stateRootHasher{rootsCache: rootsCache}
+	// Temporarily disable roots cache until cache issues can be resolved.
+	//globalHasher = &stateRootHasher{rootsCache: rootsCache}
+	_ = rootsCache
+	globalHasher = &stateRootHasher{}
 }
 
 type stateRootHasher struct {