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NEW QUESTION 59
In Flume, what is the main function of the source function module?
- A. Cache data and save the data in memory or files according to different reliability strategies
- B. Output data to destination, support multiple output protocols
- C. Split the data and send the data to different destinations according to the characteristics of the data
- D. Obtain data and convert the original data into data objects that you process
Answer: D
NEW QUESTION 60
In FusionInsight HD, for the creation and read-write permissions of various resources in Solr, which of the following statements is wrong?
- A. Only the collection creator and Solr admin roles can delete a collection
- B. Solr user group users can create a configuration set and specify the configuration set when creating a Collection
- C. Collection creator, role with read and write access to the collection, and Solr admin role can update the collection
- D. Users of the Solr user group can create Collection
Answer: B
NEW QUESTION 61
In FusionInsight HD, Spark uses YARN as the cluster resource management system by default.
- A. False
- B. True
Answer: B
NEW QUESTION 62
The system time of the node where the HDFS client is located must be consistent with the system time of the FusionInsight HD cluster. If there is a time difference, the time difference should be less than a few minutes?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: A
NEW QUESTION 63
In Spark, assuming that lines is a DStream object, which of the following statements can periodically count the number of words on this stream?
- A. Iines.flatMap(_.split (" " )).flatMap(word => (word, 1)).groupByKey(_ +_).print()
- B. Iines.fIatMap(_.spIit (" " )).map(word => (word, 1)).reduceByKey(_ +_).print()
- C. Iines.flatMap(_.split (" " )).map(word => (word, 1)).reduce(_ +_).print()
- D. Iines.flatMap(_.split (" " )).map(word => (word,word.Iength())).reduceByKey (_ +_).print()
Answer: B
NEW QUESTION 64
In FusionInsight HD, when using SparkSQL, which of the following methods (or tools) can be used to execute SQL statements? (multiple choice)
- A. JDBC
- B. spark-sql
- C. spark-beeline
Answer: A,B,C
NEW QUESTION 65
For Spark Streaming applications, in a JVM, only one StreamingContext can be active at the same time.
- A. False
- B. True
Answer: B
NEW QUESTION 66
A customer has the following scenario: indexing PB-level data requires real-time indexing performance of more than 2MB/s, and supports full-text retrieval, and requires query performance to reach a second-level response.
For the above scenarios, regarding the Solr collection design, which of the following design schemes are reasonable? (multiple choices)
- A. It can be used in conjunction with HBase. Solr only builds indexes for non-RowKey fields that need to be retrieved. HBase is responsible for storing data in all fields.
- B. When creating a Collection, you can set the number of Shards to be an integer multiple of the number of SoIrServer instances to ensure that each SoIrServer instance is negatively balanced as much as possible
- C. In the configuration set, the DirectoryFactory parameter in the solrconfig.xml file can be set to org.apache.solr.core.NIOFSDirectoryFactory
- D. It can be used in conjunction with Hbase, set the uniqueKey field and HBase RowKey field to the same value, and use the implicit Router method to make the document evenly distributed to each shard
Answer: A,B,C
NEW QUESTION 67
What is the role of the setMapOutputCompressorClass class in the development of MapReduce applications?
- A. Set the compression method of reduce output
- B. Set the compression method of Smap input
- C. Set the delivery method of map output
- D. Set the compression method of map output
Answer: D
NEW QUESTION 68
Which of the following reasons will cause HDFS NameNode to enter safemode (safe read-only mode)? (multiple choice)
- A. The missing copy exceeds the threshold.
- B. The damaged copy exceeds the threshold.
- C. The disk space where the metadata of the active and standby NameNodes reside is insufficient.
- D. The number of lost blocks exceeds the threshold.
Answer: C,D
NEW QUESTION 69
HDFS adopts a file access model of "write once, read many times". Therefore, it is recommended that after a file is created, written, and closed, it should not be modified.
- A. False
- B. True
Answer: B
NEW QUESTION 70
In FusionInsight HD, the Streaming packaging tool is used to package the business code jar package and other dependent jar packages into a complete Streaming application jar package
- A. False
- B. True
Answer: B
NEW QUESTION 71
Which of the following business applications is not suitable for Hive?
- A. Data mining (user behavior analysis, interest division, regional display)
- B. Data summary (number of user clicks per day/week, click ranking)
- C. Real-time online data analysis
- D. Non-real-time analysis (log analysis, statistical analysis)
Answer: C
NEW QUESTION 72
Regarding the Hive service of the FusionInsight HD platform and its WebHCat development interface, which of the following descriptions is incorrect?
- A. You can create tables, query and other operations through WebHCat
- B. Support REST-based query request
- C. The data format returned by WebHCat is XML
- D. WebHCat provides external services based on HTTP and HTTPS protocols
Answer: C
NEW QUESTION 73
In a FusionInsight HD cluster, Flume does not support writing collected data to which service in the cluster?
- A. HBase
- B. Redis
- C. HDFS
- D. Kafka
Answer: B
NEW QUESTION 74
Set the data block storage size to 128M. When the HDFS client writes a file, when writing a 100M file, how much storage space is actually occupied?
- A. 50M
- B. 128M
- C. 64M
- D. 100M
Answer: D
NEW QUESTION 75
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