Important Alibaba ACA-BigData1 Exam Questions

Assume that Task 1 is configured to run at 02:00 each day. In this case, the scheduling system

automatically generates a snapshot at the time predefined by the periodic node task at 23:30 each day.

That is, the instance of Task 1 will run at 02:00 the next day. If the system detects the upstream task is

complete, the system automatically runs the Task 1 instance at 02:00 the next day.

Score 1

You are working on a project where you need to chain together MapReduce, Hive jobs. You also need the ability to use forks, decision points, and path joins. Which ecosystem project should you use to perform these actions?

MaxCompute takes Project as a charged unit. The bill is charged according to three aspects: the

usage of storage, computing resource, and data download respectively. You pay for compute and

storage resources by the day with no long-term commitments.

Score 1

There are various methods for accessing to MaxCompute, for example, through management console, client command line, and Java API. Command line tool odpscmd can be used to create, operate,

or delete a table in a project.

Score 1

MaxCompute SQL is suitable for processing less real-time massive data, and employs a

syntax similar to that of SQL. The efficiency of data query can be improved through

creating proper indexes in the table.