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when aMapReduceWhen the application is executed, which of the following actions ismapoccurred before the stage?

A.

split

B.

combine

C.

partition

D.

sort

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

A.

Flume

B.

Loader

C.

HBase

D.

MapReduce

RedisofLISTData structure, suitable for which of the following scenarios? (multiple choice)

A.

Build queuing systems, such as message queues

B.

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

C.

get latestNdata operations: for example, for a certain microblog, get the latest10comments

D.

Simulate stack operations

Which of the following measures can improveHBasequery performance? (multiple choice)

A.

pre-scoreregion,MakeregionEvenly distributed, improve concurrency

B.

Query frequent attributes are placed inrowkeyThe front part

C.

Use secondary indexes to adapt to more query scenarios

D.

Data read at the same time are stored in the samecellmiddle

aboutFusionInsight HDplatformHiveservice, itsWebHCatDevelopment interface, which of the following descriptions is incorrect?

A.

Support based onRESTquery request

B.

WebHCatThe return data format isSML

C.

WebHCatbased onHTTPandHTTPSAgreement to provide services to the outside world

D.

able to passWebHCatCreate tables, query, etc.

aboutRedisCluster topology information, is the following description correct?

A.

The client caches the topology information of the cluster

B.

The server caches the topology information of the cluster

C.

both are

D.

more than two

FusionInsight HDmiddle,OozieBefore submitting the job, you need to upload the configuration files andjarpackage toHDFS

A.

True

B.

False

FusionInsight HD in real-time processing scenarios, what computing frameworks are available? (multiple choice)

A.

Spark Streaming

B.

Streaming

C.

MapReduce

D.

HDFS

FusionInsight HD a completeStreaming CQLWhich of the following parts does the application contain at least? (multiple choice)

A.

Create an input stream

B.

Create output stream

C.

Business action statements (such asSELECT,INSERT,JIONWait)

D.

Apply commit statement

Suppose there is an application that needs to be accessed frequentlyOracleThe user table in the database, in order to improve performance, introduceRedisto cache users

information.

For this scene,RedisWhich of the following is the best data structure choice for ?

A.

list

B.

set

C.

hash

D.

sorted set

FusionInsight HDin, belonging toStreamingWhat are the roles of the service? (multiple choice)

A.

Nimbus

B.

Supervisor

C.

Broker

D.

quorumpeer

There are the following scenarios: new data is generated by the online system every day500G, you need to make statistics on these data by day, week, month and other dimensions summary.

ask if it is suitable for useHiveWhat kind of table to handle?

A.

Bucket table, bucket according to day

B.

Partition table, partitioned by day

C.

skew table, skew field select date, skew value random

D.

partition+Bucket table, partitioned by time, each partition2560buckets

which come downRedisIs the command an atomic operation?

A.

INCR(increment the stored digital value by one)

B.

HINCRBY(for the hash tablekeydomain infieldvalue plus incrementincrement)

C.

LPUSH(for linked listspushoperate)

D.

All of the above

existMapReduceIn application development of , which of the followingJAVA, Class responsible for managing and running a computational task?

A.

lob

B.

Context

C.

FileSystem

D.

Configuration

YarnWhich role is to manage individual node resources (CPU/Memory)of?

A.

NodeManager

B.

Resource Manager

C.

Data Node

D.

NameNode