diff --git a/pkg/index/job/correction/service/corrector.go b/pkg/index/job/correction/service/corrector.go
index 7bdcc607ec..15b349d737 100644
--- a/pkg/index/job/correction/service/corrector.go
+++ b/pkg/index/job/correction/service/corrector.go
@@ -19,7 +19,6 @@ import (
 	"io"
 	"os"
 	"path/filepath"
-	"runtime"
 	"sync"
 	"sync/atomic"
 
@@ -284,11 +283,7 @@ func (c *correct) correctWithCache(ctx context.Context) (err error) {
 					return err
 				}
 				// delete all the key from the tmpSet
-				for k := range tmpSet {
-					delete(tmpSet, k)
-				}
 				tmpSet = nil
-				runtime.GC()
 				// ~DEBUG:
 
 				log.Infof("correction finished for agent %s", addr)