diff --git a/CHANGELOG.md b/CHANGELOG.md
index 16b564da..33894b0f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,13 @@
+# 2.17.0
+## 新增
+1. 支持智能分层
+2. get file 支持签名
+
+## 优化
+1. 下载对 CDN 友好，访问使 CDN 触发缓存
+2. 下载废弃 --public，改为内部判定
+3. listbucket2 接口优化
+
 # 2.16.1
 ## 修复
 1. 修复 fput 指定域名不生效问题
diff --git a/iqshell/common/flow/flow.go b/iqshell/common/flow/flow.go
index 55b03b32..4560b816 100644
--- a/iqshell/common/flow/flow.go
+++ b/iqshell/common/flow/flow.go
@@ -106,9 +106,13 @@ func (f *Flow) Start() {
 			hasMore, workInfo, err := f.WorkProvider.Provide()
 			log.DebugF("work producer get work, hasMore:%v, workInfo: %+v, err: %+v", hasMore, workInfo, err)
 			if err != nil {
+				workInfoData := ""
+				if workInfo != nil {
+					workInfoData = workInfo.Data
+				}
 				if err.Code == data.ErrorCodeParamMissing ||
 					err.Code == data.ErrorCodeLineHeader {
-					log.DebugF("work producer get work, skip:%s because:%s", workInfo, err)
+					log.DebugF("work producer get work, skip:%s because:%s", workInfoData, err)
 					f.notifyWorkSkip(workInfo, nil, err)
 				} else {
 					// 没有读到任何数据
@@ -116,8 +120,7 @@ func (f *Flow) Start() {
 						log.ErrorF("work producer get work fail: %s", err)
 						break
 					}
-
-					log.DebugF("work producer get work fail, error:%s info:%s", err, workInfo)
+					log.DebugF("work producer get work fail, error:%s info:%s", err, workInfoData)
 					f.notifyWorkFail(workInfo, err)
 				}
 				continue