H13-711_V3.0-ENU 무료 덤프문제 온라인 액세스

This command in Hive "ALTER TABLEemployeelADDcolumns(columnlstring);"What does it mean?

• A.add column
• B.delete table
• C.create table
• D.Modify file format

About RDDs. Which of the following statements is false?

• A.RDD is Spark's abstraction of underlying data
• B.RDDs have a lineage mechanism (Lineed)
• C.RDDs are stored on disk by default
• D.RDD is a read-only, partitionable distributed dataset

In Hadoop, if yarn.scheduler.capacity.root.Queue A.
minimum-user-limitpercent is set to 50, which of the following statements is wrong?

• A.Each user in QueueA can only get up to 50% of the resources.
• B.A user submits a task and can use 100% of QueueA's resources.
• C.QueueA must ensure that each user gets at least 50% of the resources.
• D.If there are already 2 user tasks running in QueueA, then the task submitted by the third user needs to wait for the release of resources.

What are the key features of Streaming in Huawei's big data product Fusioninsight HD?

• A.Disaster recovery capability
• B.flexibility
• C.Scalability
• D.message reliability

Which of the following statements about segment file in Kafka Logs is correct?

• A.Sparse storage, that is, to store the original complete data only at intervals
• B.Message can be quickly located through index information
• C.Mapping all index metadata to memory can avoid index data IO disk operations of segmentfile
• D.The index file is sparsely stored, which can greatly reduce the space occupied by the metadata of the index file