先試後買

A. False

B. True

A. CRC

B. RCFile

C. Parquet

D. TextFile

A. mouthMapReduce

B. mouthFlume

C. mouthLoader

D. mouthHBase

A. False

B. True

A. 3 N

B. N, N

C. 2 2

D. 2 N

A. False

B. True

A. Data read at the same time are stored in the samecellmiddle

B. Use secondary indexes to adapt to more query scenarios

C. pre-scoreregion,MakeregionEvenly distributed, improve concurrency

D. Query frequent attributes are placed inrowkeyThe front part

A. High fault tolerance

B. Calculate in real time

C. Good scalability

D. Easy to program.

A. submitcommand to change the status of the job toPREP

B. runcommand to change the job status toRUNNING

C. startcommand allowsPREPThe status of the job changes toRUNNING

D. killCommands can act onPREP/SUSPEND/RUNNINGstatus job

A. Table names and column families(family)

B. can be empty

C. table names and columns

D. Table Name

A. Both are available externallySQLor classSQLability

B. Both can run onSparkon the computational framework

C. Both are available via table fields andHBaseAccess by field mappingHBasedata on

D. Both can run onMapReduceon the computational framework

A. for settingA, CLofTopic, you can use the oldAPIconnect21005port to access.

B. oldAPIAccess only21005port; newAPICompatible access to non-secure ports21005and secure port
21007.

C. oldAPIpass through21005access to a portTopicThe premise is: server parameters allow.everyone.if.no.acd.foundSet astrue, and thisTopicnot setA, CLAttributes.

D. KafkaThe cluster security access port defaults to21007, the non-secure access port defaults to21005.