From d11f6574a37dc711cdf0bed3730aeb2344d7cc8b Mon Sep 17 00:00:00 2001
From: GoEdgeLab <goedgecloud@gmail.com>
Date: Thu, 23 Nov 2023 17:14:50 +0800
Subject: [PATCH] =?UTF-8?q?=E4=BF=AE=E5=A4=8D=E6=B8=85=E7=A9=BA=E6=96=87?=
 =?UTF-8?q?=E4=BB=B6=E7=B4=A2=E5=BC=95Map=E6=97=B6=E4=BA=A7=E7=94=9F?=
 =?UTF-8?q?=E5=B9=B6=E5=8F=91=E5=BC=82=E5=B8=B8?=
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---
 internal/caches/list_file_hash_map.go      | 5 ++++-
 internal/caches/list_file_hash_map_test.go | 7 +++++++
 2 files changed, 11 insertions(+), 1 deletion(-)

diff --git a/internal/caches/list_file_hash_map.go b/internal/caches/list_file_hash_map.go
index 625de3d..5a772bb 100644
--- a/internal/caches/list_file_hash_map.go
+++ b/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()
diff --git a/internal/caches/list_file_hash_map_test.go b/internal/caches/list_file_hash_map_test.go
index f9481fa..d2080eb 100644
--- a/internal/caches/list_file_hash_map_test.go
+++ b/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()