A.Each worker can run multiple Executors (threads)

B.Each Executor (thread) can run tasks (tasks) of different components (spout or bolt)

C.Each Executor (thread) can run a task (task)

D.Each worker can only run Executor (thread) for one topology

A.Cluster resource scheduling

B.Application Management

C.None of the above statements are true

D.Log management

A.True

B.False

A.Loader service master node

B.Nodes running YARN service jobs

C.Both of the first two are required

D.Neither of the first two is required