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Description
Bug 描述
由于网络连接出现短时波动造成Worker节点连接不到FS从而导致全部节点重启
复现步骤
unexpected EOF
... in (*SeaweedFsManager).downloadFile()
... in (*SeaweedFsManager).syncRemoteToLocal()
在 service.go 第 123 行,代码试图访问一个 nil 指针
Worker 启动
↓
尝试从 master 的 filer (SeaweedFS) 同步文件
↓
连接中断 / 响应异常 → unexpected EOF
↓
代码未正确处理错误,返回了 nil 或无效对象
↓
后续逻辑(Fetch)访问 nil 字段
↓
panic: invalid memory address
↓
进程崩溃,Exit Code 2
↓
Kubernetes 重启 Pod
期望结果
在crawlab-core/task/handler/service.go 的 Fetch 方法中增加 nil 判空:
if someObj == nil {
log.Error("object is nil, skip")
return
}
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