修复清空文件索引Map时产生并发异常

internal/caches/list_file_hash_map.go

@@ -133,7 +133,10 @@ func (this *FileListHashMap) Clean() {
 		this.lockers[i].Lock()
 	}
 
-	this.m = make([]map[uint64]zero.Zero, HashMapSharding)
+	// 这里不能简单清空 this.m ，避免导致别的数据无法写入 map 而产生 panic
+	for i := 0; i < HashMapSharding; i++ {
+		this.m[i] = map[uint64]zero.Zero{}
+	}
 
 	for i := HashMapSharding - 1; i >= 0; i-- {
 		this.lockers[i].Unlock()

internal/caches/list_file_hash_map_test.go

@@ -125,6 +125,13 @@ func TestFileListHashMap_Delete(t *testing.T) {
 	a.IsTrue(m.Len() == 0)
 }
 
+func TestFileListHashMap_Clean(t *testing.T) {
+	var m = caches.NewFileListHashMap()
+	m.SetIsAvailable(true)
+	m.Clean()
+	m.Add("a")
+}
+
 func Benchmark_BigInt(b *testing.B) {
 	var hash = stringutil.Md5("123456")
 	b.ResetTimer()