In the Mapreducei process, by default, a shard is a block and a mapTask.

• A.True
• B.False

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In the Fusioninsight product, which of the following descriptions are correct about the topic of creating Kafka?

• A.all of the aboveA. True
• B.When creating TopicE of Kafkal, the number of Partitions must be set
• C.When creating TopicE of Kafkal, the number of Partition copies must be set
• D.Setting up multiple replicas can enhance the disaster tolerance of Kafka services

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As shown in the figure, which of the following options are wide dependencies

• A.group by A->B
• B.union D&E->F
• C.map:C->D
• D.join B&F->G

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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.View worker running logs
• C.Check the running log of the main nimbus to determine whether the nimbus server is abnormal
• D.Check the Supervisori running log to determine whether the Supervisor is abnormal

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In Kafka, the following statement about the data sent by the Producer is wrong

• A.Proucer can send data to both Broker and Consumer
• B.Proucer can generate data by connecting to any normal Broker instance
• C.The Producer is responsible for producing data, and the Consumer is responsible for consuming data. A connection needs to be established between the Producer and the Consumer.
• D.As a message producer, Proucer can directly write data to Zookeeper

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