What are the main characteristics of big data analysis related technologies?

• A.machine learning, full features
• B.Based on massive data
• C.based on exact samples
• D.Event correlation analysis behind the data

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In Fusionlnsight HD, which of the following components do Flink mainly interact with? (Multiple choice)

• A.Kafka
• B.zookeeper
• C.HDFS
• D.Yarn

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After submitting the topology using the Streaming client shell command in the Fusioninsight HD system, using the Strom UI to view it, it is found that the topology has not processed data for a long time. What are the possible reasons? (Multiple choice)

• A.Supervisor is a component that receives data in the topology and then performs processing
• B.The topology is too complicated or the concurrency is too large, which causes the worker startup time to be too long, exceeding the waiting time of the Supervisor
• C.There is a logic error in the topology business, and it cannot run normally after submission
• D.Supervisor's slot resources are exhausted, and no slots can be allocated to start the worker process after the topology is submitted.

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In the Fusioninsight HD system, using the Streaming client Shell command to view the topology or submit the topology fails, which of the following positioning methods are correct? (Multiple choice)

• A.Check the Supervisor running log to determine whether the Supervisor is abnormal
• B.Check the client exception stack to determine whether there is a problem with the client
• C.Check Worker running log
• D.Check the running log of the main Nimbus to determine whether the Nimbus server is abnormal

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What does Fusioninsight HD HBase use by default as its underlying file storage system?

• A.HDFS
• B.Memory
• C.MapReduce
• D.Hadoop

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