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SparkandHadoopNeither is suitable for iterative calculation scenarios.

A.

True

B.

False

useFusionInsight HDofHiveQuery data, when the intermediate result of the query has a large amount of data.

You can choose to compress the network result data to obtain better performance. Which of the following areHiveCorrelation of intermediate result compression

parameter? (multiple choice)

A.

hive.exec.compress.intermediate

B.

hive.intermediate.compression.codec

C.

hive.exec.compress.output

D.

hive.intermediate.compression.type

A.

The port preferentially downloads data from the nearest DataNode.

B.

The port file data is first returned from the DataNode to the NameNode, and then downloaded from the NameNode to the client.

C.

If the client and the connected DataNode fail while reading, the client will abandon the failure

node, to connect to the node where its replica is located.

D.

The port supports multiple clients reading the same file data from the DataNode at the same time.

HDFSclient withNcopy toHDFSWhen writing a file, if one of the copies fails to write, all

If there is a copy, it will return a failure.

A.

True

B.

False

HDFSclient withNWhen a copy writes a file, which of the following is true about the writing process? (multiple choice)

A.

eachDataNodemaximum storage1copy.

B.

Support multiple users to write to the same file at the same time.

C.

The first copy of the data block is placed preferentially on the node where the client writing the data block is located.

D.

Copied file blocks all exist on the same rack by default.

FusionInsigt HD which of the following components can be used for data collection? (multiple choice)

A.

mouthFlume

B.

mouthLoader

C.

mouthHBase

D.

mouthMapReduce

existHBaseWhile the application is running, the application can write data while creating the table.

A.

True

B.

False

existFusionInsight HD where can I viewMapReduceThe result of running the application?

A.

FusionInsight ManagerofWebinterface

B.

Loader Webinterface

C.

Solr Webinterface

D.

Yarn Webinterface

A large-scale production enterprise,tPlan to analyze the internal logistics data and sales datat,Assumeiout of the wayT

effectganalysis, which of the following statements are correct? (multiple choice)

A.

HBaseIt can store massive data and support dynamic expansion, which can fulfill the storage requirements of logistics and sales data.

B.

HbaseIt supports efficient random reading, and can complete real-time analysis and command of the logistics situation through reasonable design.

C.

Logistics data is very sparse,HBaseCan handle sparse data efficiently.

D.

HBaseIt can be built on ordinary commercial servers, and the construction cost is relatively low.

existMapReduceIn application development of , which of the followingJAVAThe class is responsible for managing and running a

Counting tasks?

A.

Job

B.

Context

C.

FileSystem

D.

Configuration

FusionInsiat HD the user wants to passHBase shelloperation to query aHBasein the table. In this scenario, it is recommended that the administrator assign a machine account to this user.

A.

True

B.

False

HDFSIt adopts a "write once, read many" file access model. Therefore, it is recommended that a document

After creating and writing the profit, do not modify it again.

A.

True

B.

False

for running onMapRestoeThe application on the platform, on which this application is basedjarpackage is placed where?

A.

HIVE

B.

HBASE

C.

HDFS

D.

DB

RedisofLISTData structure (multiple choice) Which scenarios?

A.

Build queuing systems, such as message queues

B.

uniq operations, such as getting the ranking value of all data in a certain period of time

C.

Get the latest N data operations: For example, for a Weibo, get the latest 10 comments,

D.

Simulate stack operations

aboutStreamingthe topology (Topology), which of the following descriptions is wrong?

A.

OneTopologyis made up of a group ofSpoutcomponents andBoltcomponents passStream Groupingsconnected

B.

Directed acyclic graph (DAG)

C.

Topologywill run until it is explicitlykill

D.

Business logic is encapsulated inTopologymiddle OneTopologyOnly one can be specified to startWorkerprocess