save directly to /tmp

Signed-off-by: hillium <[email protected]>

br/pkg/storage/batch.go

@@ -6,7 +6,6 @@ import (
 	"fmt"
 	"io"
 	"os"
-	"path"
 	"sync"
 
 	"github.com/pingcap/errors"
@@ -57,8 +56,7 @@ func JSONEffects(es []Effect, output io.Writer) error {
 }
 
 func SaveJSONEffectsToTmp(es []Effect) (string, error) {
-	// Save the json to a subdir so user can redirect the output path by symlinking...
-	tmp, err := os.CreateTemp(path.Join(os.TempDir(), "tidb_br"), "br-effects-*.json")
+	tmp, err := os.CreateTemp(os.TempDir(), "br-effects-*.json")
 	if err != nil {
 		return "", errors.Trace(err)
 	}