H13-723_V2.0 Questions and Answers

32MB

64MB

128MB

256MB

Table Name

Table names and column families(or table name andfamily)

table names and columns

can be empty

Attribute values with high access weight are placed inRowKeyFront

Attribute values with high access weight are placed inRowkeysecond half

Attribute values with good dispersion are placed inRowkeyfirst half

Attribute values with good dispersion are placed inRowkeysecond half

After creating,

writing and closing,

do not modify it again.

right or wrong

read only

partition

fault tolerance

efficient

The query field must be sorteduniqueKeySort by field

For the first query request, you need to specify query parameters. The operation method is as follows:solrquery.set

(CursorMarkParams.CURSOR_MARK_PARAM,CursorMarkParams.CURSOR_MARK_

START);

When querying, the request cannot containstartparameter

SorlThe return result will havenextCursorMark, on the next call use this value ascursorMark

krb5.confconfiguration file

existFusionInsight ManagerUser account applied on

user accountkeytabdocument

jaas.confconfiguration file

Attribute values with high port access weights are placed inRowKeyFront

Attribute values with high port access weights are placed inRowkeysecond half

The attribute value with good dispersion is placed inRowkeyfirst half

The attribute value with good dispersion is placed inRowkeysecond half

True

False

True

False

mouthHBase

mouthHive

mouthSpark

mouthRedis

Click Tree under Cloud to view metadata such as Collections, configuration sets, and ive nodes in Solr loud information

Click Cloud to view the Replica distribution and status of each Shard under each Collection

Enter the Core Oveview interface where Calectiopeyshard Replicaf is installed, and you can view the Replca index Real Qunwen You Department relies on storing size and location information

Users of the Sor user group, Solr admin role, and Super group can access the Solr Admin UI

True

False

True

False

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

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

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

useJDB, CsubmitSQL, you canSQLPut a semicolon after the statement";"

The client caches the topology information of the cluster.

The server caches the topology information of the cluster

both are

neither

mouthIbClient.setRequestWriter(new BinaryRequestWriterO);

mouthif(updateRequest.getDocumentsMapO.size)>=10000){

cloudSolrClient.request(updateRequest,collName);updateRequest.clear);

mouthif(updateRequest.getDocuments).size(O>=1000){

cloudSolrClient.request(updateRequest,collName);updateRequest.clearO;

S8tW9H2xgntdc=new SolrInputDocument);

doc.addField("id",i.tostring( )doc.addField("name", "Zhang San4i);

doc.addField("features","test"+i):

doc.addreldc"price, (float)*1.oi);

cloudSolrClient.add(doc);

cloudSolrClient.commitO:

Producer

Broker

Consumer

ZooKeeper

Krb5.conf

TGT

ST

jaas.conf

True

False

name-node

source

mapred.mapper.class

job-tracker

True

False

5

10

20

30

eachDataNodemaximum storage1copies.

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

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

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

suspend

getJoblnfo

submit

run

Support based onRESTquery request

WebHCatThe return data format isSML

WebHCatbased onHTTPandHTTPSAgreement to provide services to the outside world

able to passWebHCatCreate tables, query, etc.

True

False

Table Name

table names and columns

Table names and column families

can be empty

twoworkerone of theworkerdistribute two

twoworkerone for each

no fixed rules

twoworkerBoth are distributed

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

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

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

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

True

False

in the cluster1Create the account required for this application on theHBaseServe

in the cluster2created onAThe account with the same name in the options, and set this account to be able to access the cluster'sHiveServe

Aoptions andBThe account created by the option must belong tosupergroupGroup

cluster1and cluster2Complete the mutual trust operation

low latency

Rich data structures

Support data persistence

supportSQLquery interface

True

False

C

Scala

Java

Python

JDB, Cinterface

ODB, Cinterface

Pythoninterface

Rubyinterface

INCR(aThe stored digital value is incremented by one)(DECR)

HOY(eesurfacekeydomain infieldvalue plus incrementincrement)

UURH(MRnpuhoperate)

All of the above

HFile

HLog

MemStore

HMaster

Support for REST-based query requests

The returned data format of WebHCat is XML

WebHCat provides external services based on HTTP and HTTPS protocols

You can create tables, query and other operations through WebHCat

NodeManager

container

ResourceManager

AppMaster

Krb5

conf

TGT

jaas.conf

mouthJDB, Cinterface

mouthODB, Cinterface

mouthPythoninterface

mouthRubyinterface

True

False

3

4

5

6

JDB, C

spark-beeline

spark-sql

(1) data fromsourcearrivechannel;(2)sinkfromchannelfetch data

(1) data fromchannelarrivesource;(2)sinkfromsourcefetch data

(1) data fromsinkarrivechannel;(2)sourcefromchannelfetch data

(1) data fromchannelarrivesource;(2)sinkfromsourcefetch data

enabledAckerLater,StreamingIt will identify the failure to sendTupleAnd automatically resend without human intervention.

AckerThe message that will identify the processing timeout or processing failure isfail.

fromspoutstarted, formedTupleFailure of any link in the tree will mark the entire tree as failed.

The application needs to be inspoutoffail() interface method to implement message resend logic.

Producer

Broker

Consumer

ZooKeeper

Mass data storage

Lots of small file storage

large file storage

Streaming file storage

storage

Resource management

search

data transmission

kill

run

resume

submit

ResourceManager

Contaioner

AppMaster

NodeManager

Name+Phone number

date+Phone number

Phone number+date

Phone number+Name

Create an input stream

Create output stream

Business action statements (such asSELECT,INSERT,JIONWait)

Apply commit statement

Versions

TTL

Coprocessor

Compression

BufferedOutputStream.write

BufferedOutputStream.flush

FileSystem.create

FileSystem.append

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

HbaseSupport colleges and universities to read immediately, and can complete real-time analysis and command of the logistics situation through reasonable design.

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

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

CRC

Parquet

RCFile

TextFile

NodeManager

container

ResourceManager

AppMaster

Only the HMI account can be used.

Only the machine account can be used.

A client does not support the simultaneous use of multiple accounts.

The ticket obtained by executing this command is intwenty fourIt will time out when it is small and needs to be executed againkinitcommand to log in again.

priority from the nearestDataNodeDownload data.

file data fromDataNodeback toNameNode, then fromNameNodeDown to the client.

If the client and the connectedDataNodeIf there is a failure in reading, then the client will give up the applause node and connect the node where other replicas are located.

Supports multiple clients fromDataNoderead the same file data.

available fromHDFSdirectly into thehivesurface

available fromHiveServerThe local hard disk of the node is directly loaded into thehivesurface

It can be directly loaded from the local hard disk of the node where the client is located.hivesurface

HiveThe data loading process will not parse the specific file content, mainly the process of file transfer

HDFS

HBase

Kafka

Redis

suspend

getJoblnfo

submit

run

Spark

Streaming

MapReduce

HDFS

MapReduce

SparkF

HDFS

HBase

yarn.nodemanager.local-dirs

yarn.nodemanager.log-dirs

yarn.acl.enable

yarn.log-aggregation-enable

SNMP

VPN

BGP

syslog

True

False

LoaderSubmit the job toARNAfter execution, if at this timeLoaderIf the service is abnormal, this job executes line failed.

LoaderSubmit the job toYARAfter a small execution, if a certainMapperTask execution fails, can be automatically Try again.

LoaderIf the job fails to execute, garbage data will be generated, which needs to be cleared manually by the user.

LoderSubmit an assignment toYARAfter the job is executed, no other jobs can be submitted until the job is executed Industry.

yarm.scheduler.capacity.rot.QueueA. user-limit-factor

yam.scheduler.capacity.root.QueueA. minimum-userlimit-percent

yarm.scheduler.capacity.root.QueueA. capacity yarm.scheduler.capacity.rot.QueueA