A、创建中
B、启动中
C、运行中
D、已停止
答案:CD
A. CHUNK
B. GFS
C. CFILE
D. MFC
A. 正确
B. 错误
A. 正确
B. 错误
A. 正确
B. 错误
A. Map和Reduce前都需要对数据进行按顺序分片
B. 进入reduce前,数据必须进行合并操作(combiner),然后按照key排序
C. Map Worker在输出数据时,需要为每一个输出数据指定一个Key
D. Reducer的个数和Mapper的个数必须一致
A. 正确
B. 错误
A. 正确
B. 错误
A. select instance_id, count(*) from information_schema.kepler_node_info where role = 'worker' group by instance_id having count(*) < 3;
B. select status,count(1) as cnt from information_schema.kepler_cstore_build_task_merged group by status
C. select server_addr,state from information_schema.KEPLER_CSTORE_RAFT_STATUS_MERGED
D. select shard_id,shard_name,task_id,status,update_time from kepler_meta_node_scale_shard_task
A. 人工巡视
B. 机器人巡视
C. 检修试验
D. 带电检测
A. HTTP
B.
FTP
C.
SMTP
D. TCP