When indexing in Solr, which of the following code snippets can significantly improve indexing performance? (multiple choice)

• A.if (updateRequest.getDocumentsMap().size() >= 10000) { cloudSolrClient.request (updateRequest, collName); updateRequest.clear(); }
• B.if (updateRequest.getDocuments().size() >= 1000) { cloudSolrClient.request (updateRequest, collName); updateRequest.clear(); }
• C.SolrlnputDocument doc = new SolrlnputDocument(); doc.addField ("id", i.toString()); doc.addField ("name", "Zhang San" + i); doc.addField ("features", "test" + ); doc.addField ("price", (float) i * 1.01); cloudSolrClient.add (doc); cloudSolrClient.commit();
• D.lbClient.setRequestWriter (new BinaryRequestWriter());

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In which of the following is the MapReduce task finally executed?

• A.NodeManager
• B.ResourceManager
• C.container
• D.AppMaster

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In the HBase table design, for multiple businesses sharing the rowkey, which leads to data access contradictions, what strategies can be used to deal with it?

• A.Compromise method (rowkey design takes into account the business needs of A and B)
• B.Redundancy method (use space for time plant efficiency)
• C.Create a secondary index
• D.Pre-division region

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In FusionInsigt HD, an application deployed on Tomcat needs to access the HBase service. In this scenario, it is recommended to use a machine-to-machine account.

• A.True
• B.False

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In FusionInsight HD, regarding the partition function of Hive, what is wrong in the following description?

• A.There can only be one partition field, and multi-level partitions cannot be created
• B.The partition field should be defined when the table is created
• C.The partition field can be used as the condition of the where clause
• D.Using partitions can reduce the data scan range of certain queries, thereby improving query efficiency

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