H13-723_V2.0 Exam Dumps - Huawei HCIP-Big Data Questions and Answers

Partition fields are defined when the table is created

There can only be one partition field, and multi-level partitions cannot be created

Using partitions can reduce the data scan range of some queries, thereby improving query efficiency

Partition fields can be used aswherecondition of the sentence

KafkaofProducerWhen sending a message, you can specify which message is sent byConsumerConsumption.

while creatingTopc, the number of replicas must not be greater than the currently survivingBrokerThe number of instances, otherwise createTopicWill will fail.

KafkaAfter the installation is complete, you can no longer configure the data storage directory.

KafkaMetadata information will be stored inZooKeepersuperior.

to emit

execute

open

nextTuple

Put

HTable

HBaseAdmin

PutList

YARN

HDFS

Hive

HBase

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

HbaseIt supports efficient random reading, 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.

Create a normal table by default

The essence of the external table is that it will already existHDFSThe file path above is associated with the table

When deleting a normal table, both metadata and data are deleted at the same time

When deleting an external table, only the external table data is deleted without the metadata

taildir

Log4j

JMS

Thrift