FusionInsightHDin, aboutHivepartition (partition) function, which is wrong as described below?

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

Answer(s): B

A large-scale production enterprise plans to transform its internal logistics data and sales data into big dat

The design department gives
Based on the analysis of the data storage scheme, which of the following statements are correct? (multiple choice)
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.

Answer(s): A,B,C,D

existHBaseWhich of the following interfaces or classes does not need to be involved in the implementation of business logic for writing data?

Answer(s): C

aboutFusionInsight HDplatformHiveservice, itsWebHCatDevelopment interface, the following description does not the correct one is?

Support based onRESTquery request
WebHCatThe return data format isXML (Json)
WebHCatbased onHTTPandHTTPS
Agreement to provide services to the outside world able to passWebHCatCreate tables, query, etc.

Answer(s): B

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