Which is the correct description of the Loader job in Fusionlnsight HD?

• A.After the execution of Loader job fails, the dam data will be generated, which needs to be manually cleared by the user
• B.After the Loader submits the job to Yam for execution, if the Loader service is abnormal at this time, the job execution fails.
• C.After Loader submits a job to Yam for execution, no other jobs can be submitted until the job is completed.
• D.After Loader submits the job to Yam for execution, if a Mapper task fails to execute, it can automatically retry

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Which of the following descriptions about the functions of HMaster in HBase are correct?

• A.Region load balancing, Region splitting and Region allocation after splitting
• B.Responsible for load balancing of RegionServer
• C.Region after RegionServer failsmigrate
• D.Responsible for creating tables, modifying tables, deleting tables

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Huawei Fusioninsight HD is the first big data platform in China that complies with national financial and other garbage protection. What are the following aspects of its security?

• A.Data Security
• B.system security
• C.everything aboveA. True
• D.Authority authentication

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Which of the following aspects reflect Fusioninsight HD data high reliability? (Multiple choice)

• A.Critical data power failure protection
• B.Cross-data center disaster recovery
• C.Third-party backup system integration
• D.Disk hot swap

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There are 230 nodes in the FusionlnsightHD cluster of a university. Which of the following processes should be deployed on the data nodes during cluster planning?

• A.NodeManager
• B.RegionServer
• C.SolrServer
• D.DataNode
• E.NameNode
• F.DBServer

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