What are the performance bottlenecks of traditional data processing? (Multiple choice)

• A.Missing batch data processing
• B.Insufficient streaming data processing performance
• C.High data storage cost
• D.Limited scalability

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MOB data in HBase is directly stored in HFile format on HDFS, and then the address information and size information of this file are stored as value on the store that manages HBase, and these files are managed centrally through tools. This can greatly reduce HBase's compression and split frequency and improve performance.

• A.False
• B.True

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The streaming client shell command in the FusionInsight HD system fails to view the topology or submit the topology. Which of the following positioning methods are correct?

• A.View the client exception stack to determine whether the client is using the problem
• B.Check the Supervisori running log to determine whether the Supervisor is abnormal
• C.View worker running logs
• D.Check the running log of the main nimbus to determine whether the nimbus server is abnormal

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Which one of the following commands can be used to clear the data of all databases under the Redis instance?

• A.flushdb
• B.flushall
• C.dropdb
• D.dropall

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ElWhat processing capabilities does asticSearch have for structured, semi-structured, and unstructured data?

• A.numberOptional rewrite when data is writtendeleteand compression function
• B.to enterA series of operations such as line cleaning, word segmentation, and establishment of an inverted index
• C.Provides the ability to search full text, conditions can include words or phrases
• D.The written data can be checked in real timeSow

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