H13-723 무료 덤프문제 온라인 액세스

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

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

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

• A.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();
• B.if (updateRequest.getDocumentsMap().size() >= 10000) { cloudSolrClient.request (updateRequest, collName); updateRequest.clear(); }
• C.if (updateRequest.getDocuments().size() >= 1000) { cloudSolrClient.request (updateRequest, collName); updateRequest.clear(); }
• D.lbClient.setRequestWriter (new BinaryRequestWriter());

A large manufacturing company plans to transform its internal logistics data and sales data into big data. The design department has given an analysis of the data storage plan. Which of the following descriptions is correct?

• A.HBase can be built on ordinary commercial servers, and the construction cost is relatively low.
• B.Hbase supports efficient random reading, and can complete real-time analysis and command of the logistics situation after a reasonable design.
• C.Logistics data is very sparse, and HBase can efficiently process sparse data.
• D.HBase stores massive data and supports dynamic expansion, which can fulfill the storage requirements of logistics and sales data.

Spark Streaming can receive data from Kafka and perform calculations. The calculation results can only be stored in HDFS and cannot be written back to Kafka.

• A.False
• B.True

Which of the following descriptions about the characteristics of Kafka is correct? (multiple choice)

• A.Kafka can ensure that the messages in each Partition are in order
• B.Kafka can achieve message persistence
• C.Kafka is a high-throughput, distributed, publish-and-subscribe messaging system
• D.Kafka is suitable for offline and online message consumption scenarios