FusionInsight HDin useStreamingofA, CKWhich of the following statements is true? (multiple choice)

enabledAckerLater,StreamingIt will identify the failure to sendTupleAnd automatically resend without human intervention.
AckerThe message that will identify the processing timeout or processing failure isfail.
fromspoutstarted, formedTupleFailure of any link in the tree will mark the entire tree as failed.
The application needs to be inspoutoffail() interface method to implement message resend logic.

Answer(s): B,C,D

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

The design department provides data storage
Analysis of the program, which of the following statements are correct?
HBaseIt can store massive data and support dynamic expansion, which can fulfill the storage requirements of logistics and sales data.
HbaseSupport colleges and universities to read immediately, 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

HDFSThere is a file in the cluster and directorytext.txt, which of the following commands can find theDatNodenode information?

Answer(s): B

HDFSclient withNWhen a copy writes a file, which of the following is true about the writing process? (multiple choice)

eachDataNodemaximum storage1copies.
Support multiple users to write to the same file at the same time.
The first copy of the data block is placed preferentially on the node where the client writing the data block is located.
Copied file blocks all exist on the same rack by default.

Answer(s): A,C

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