HDFSRuntime,NameNodewill load all the metadata of the file system from disk into memory, so the file system can The total number of files stored is limited byNameNodememory capacity.

• A.False
• B.True

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A project needs to count the Internet access in a certain area and the serious crime in the area. Please make it clear that Nanyao teaches Huajin that it needs to be preserved, and fully check this Are there sensitive information in these Internet records for pre-optimal solutions?

• A.When storing data, inSolrOn the construction of information, through the customs messenger is on the electricity, if the lack of quality, Wan Mo dad will put the complete data,
• B.When querying, bysorFull-text search to obtain record key
• C.existsorCreate an index on the database, save the data, and return all the data when the full text is checked.
• D.existHBasestore data on theHBaseThe filtering characteristics of , satisfy fuzzy matching query.

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For multiple business sharingrowkey, What are the countermeasures for situations that lead to conflicting data access?
(multiple choice)

• A.Create a secondary index
• B.Port redundancy method (exchange space for time/effectiveness)
• C.Mouth compromise (rowkeyDesign takes into accountAandBbusiness needs)
• D.mouth pre-scoreregion

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Which of the following methods can generateDStreamobject?

• A.KafkaUtils.createDirectStream(...)
• B.KafkaUtils.createStream(...)
• C.StreamingContext.socketStream
• D.StreamingContext.fileStream(...)

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existFusionInsight HDmiddle,FlumeWhich of the following are supportedsourceTypes of? (multiple choice)

• A.Kafka
• B.HTTP
• C.HBase
• D.Avro

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