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coordinator.xmlis the configuration file responsible for scheduling the workflow

A.

True

B.

False

existKafkain, aboutConsumerWhich statement is correct? (multiple choice)

A.

ConsumerMainly for data consumption

B.

ConsumerNeed to specify when consuming dataTopic

C.

multipleConsumerconfigure the samegroup.idwhen theseConsumerConsumed data will not be duplicated

D.

newConsumerAPIConsumption data does not need to be specifiedZooKeeperaddress

FusionInsight HDsystem, aboutHiveofJDB, CInterface type, which of the following descriptions is correct?

A.

In a network isolation environment,ZooKeeperofIPCan be configured as a businessIP, can also be configured to manageIP.

B.

HiveUnlike traditional databases, soJDB, CThe established connection does not need to be closed.

C.

In a secure cluster environment, establish andHiveBefore connecting, you need to use unified authentication to log in.

D.

useJDB, CsubmitSQL, you canSQLA semicolon ";" is added after the statement.

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.

HBaseofRegionWhich service process is managed?

A.

HMaster

B.

DataNode

C.

HRegionServer

D.

ZooKeeper

forHBase rowkeyThe design principles described below are correct? (multiple choice)

A.

Attribute values with high access weight are placed inRowKeyFront

B.

Attribute values with high access weight are placed inRowkeysecond half

C.

Attribute values with good dispersion are placed inRowkeyfirst half

D.

Attribute values with good dispersion are placed inRowkeysecond half

Which of the following is notMapReducespecialty?

A.

Easy to program

B.

Good scalability

C.

Real-time computing

D.

High fault tolerance

FusionInsight HDmiddle,StreamingWhat are the characteristics of? (multiple choice)

A.

stream processing

B.

high performance

C.

Scalable

D.

High fault tolerance

about the followingHBaseofBloomFilterCharacter understanding, which statement is incorrect?

A.

used to filter data

B.

Used to optimize random performance

C.

will increase storage consumption

D.

Can accurately determine that a certain data does not exist

FusionInsight HDin useStreamingofA, CKWhich of the following statements is true

of? (multiple choice)

A.

After enabling Acker, Streaming will identify the failed Tuple and automatically resend it without human intervention pre.

B.

Acker will identify the processing timeout or processing failed messages as fail.

C.

Starting from the spout, failure of any link in the formed tuple tree will mark the entire tree as failure.

D.

The application needs to implement the message resend logic in the fail) interface method of spout.

FusionInsight HDmiddle,Oozieclient'sJava APIwill be called when the task is run

OozieClientWhich method of the class?

A.

suspend

B.

getJobInfo

C.

submit

D.

Run

aboutHiveandHadoopThe relationship of other components, the following description is wrong?

A.

Hivefinally store the data inHDFSmiddle

B.

HQLable to passMapReduceperform tasks

C.

HiveYesHadoopThe platform's data warehouse tools

D.

HiverightHBasehave strong dependencies

forHBase rowkeyThe design principles described below are correct?

(multiple choice)

A.

Attribute values with high access weight are placed inRowKeyFront

B.

Attribute values with high access weight are placed inRowkeysecond half

C.

Attribute values with good dispersion are placed inRowkeyfirst half

D.

Attribute values with good dispersion are placed inRowkeysecond half

FusionInsight HDin, aboutOozieWhich of the following descriptions is correct?

(multiple choice)

A.

submitcommand to change the status of the job toPREP

B.

statcommand allowsPREPThe status of the job changes toRUNNINGrun

C.

Runcommand to change the job status toRUNNINGl

D.

KillCommands can act onPREP/SUSPEND/RUNNINGstatus job

existSparkmiddle,SparkSQLis an independent module that does not depend onSparkCorefinish independentlySQL

Statement parsing, optimization, and execution.

A.

True

B.

False