H13-723_V2.0 Exam Dumps - HCIP-Big Data Developer V2.0

KafkaIt is a high-throughput, distributed, publish-subscribe-based messaging system

KafkaPersistence of messages

KafkaApplicable to offline and online message consumption scenarios

Kafkaguarantee eachPartitionmessages in order

If ZooKeeperIf there is an interruption in the process of synchronizing the message, after the failure is recovered, the transmission status before the failure can be adjusted according to the the state continues to synchronize, that is, support for resuming transmission from a breakpoint.

ZooKeeperUse a custom atomic message protocol to ensure the consistency of node data in the entire system.

ZooKeeperThe cluster is elected at startupLeaderRole.

LeaderAfter a node receives a data change request, it first writes to disk and then writes to memory.

True

False

Mouth compromise (rowkeyDesign takes into accountAandBbusiness needs)

Port redundancy method (exchange space for time/effectiveness)

Create a secondary index

mouth pre-scoreregion

existSolrCreate an index and save the data, and return all the data during full-text search.

existHBasestore data on theHBaseThe filtering characteristics of , satisfy fuzzy matching query.

When storing data, inSolrindex on theHBaseStore complete data? ? when, throughSolrFull-text search to obtain and record

record key information, through the key information inHBasefor the full record.

JDB, C

spark-beeline

spark-sql

True

False

broadcast variable in everyTasksave a copy

broadcast variable in eachExecutorsave a copy

Broadcast variables are read-only

broadcast variable viaSparkContext.broadcast() method to generate