failure, recovery) DEEP INSIGHTS Plan to Support metrics, alerts, log processing and workload analysis AUTO PILOT Plan to Support horizontal/vertical scaling, auto config tuning, abnormal detection

failure 4s Server failure 4s Server fake death 4s Slow response 1s frequentlyData availability analysis Copyset allocation algorithm cluster with 1200 disks (each have MTBF 1.2 million hours) 3 replicas

last_modified_time; } write_notify; int64_t offset; //current offset } FCFSAPIFileInfo; static int do_open(fuse_req_t req, FDIRDEntryInfo *dentry, struct fuse_file_info *fi, const FCFSAPIFileContext struct fuse_file_info *f) { ... fill_open(&arg, f); return send_reply_ok(req, &arg, sizeof(arg)); } static void fill_open(struct fuse_open_out *arg, const struct fuse_file_info *f) { arg->fh = f->fh;

疑问：协商期间do_init()中的启用ACL的flags如何设置？ 初始化时的 通过 ： 功能协商 init()函数实现© XXX Page 9 of 33 // libfuse lib/fuse_lowlevel.c static void do_init(fuse_req_t req, fuse_ino_t nodeid, const void *inarg) { struct fuse_init_in *arg =