Topic: Radoop

A frequent reason why Radoop connection tests fail is $($Select ANY correct answer$)$

A$.$

the default Hive connection test time is too short.

B$.$

the test uses a standard RapidMiner modeling operator instead of a Radoop modeling operator.

C$.$

the Hadoop clusters are spun up before the connection test takes place.

D$.$

the Radoop client does not have permission to create a $/$tmp directory on the HDFS$.$