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NEW QUESTION 66
Regarding FusionInsight HD's Spark, which of the following programming languages can be used to develop Spark applications? (multiple choice)
- A. Scala
- B. Python
- C. Java
- D. C
Answer: A,B,C
NEW QUESTION 67
What methods does FusionInsight HD support to submit Oozie jobs? (multiple choice)
- A. Shell commands
- B. Hue UI
- C. Rest API
- D. Java API
Answer: A,B,C,D
NEW QUESTION 68
In Spark, assuming that lines is a DStream object, the filter statement can filter out 80% of the data. Which statement is correct for the following two statements:
X: lines.filter(...).groupByKey(...)
Y: lines.groupByKey(...).filter(...)
- A. X has higher performance than Y
- B. It is impossible to determine the performance difference between X and Y
- C. X has lower performance than Y
- D. X and Y have the same performance
Answer: A
NEW QUESTION 69
In FusionInsight HD, when using Streaming's ACK mechanism, which of the following statements are correct? (multiple choice)
- A. After Acker is enabled, Streaming will identify the Tuple that failed to be sent and automatically resend it without human intervention.
- B. Acker will mark the processing timeout or processing failure message as fail.
- C. Starting from the spout, the failure of any link in the formed Tuple tree will mark the entire tree as a failure.
- D. The application needs to implement message retransmission logic in the fail() interface method of spout.
Answer: B,C,D
NEW QUESTION 70
In Kafka, which statement about Consumer is correct? (multiple choice)
- A. Topic needs to be specified when Consumer consumes data
- B. When multiple Consumers are configured with the same group.id, the data consumed by these Consumers will not be repeated
- C. The new ConsumerAPI consumption data does not need to specify the ZooKeeper address
- D. Consumer mainly conducts data consumption
Answer: A,B,C,D
NEW QUESTION 71
What are the several parameter setting methods for Spark applications? (multiple choices)
- A. When submitting the application, set it through --conf
- B. Configure in the application configuration file spark-defaults.conf
- C. In the application code, set by the setProperty method of SparkContext
- D. In the application code, set through the SparkConf object
Answer: A,B,D
NEW QUESTION 72
In FusionInsight HD, in which ways can I view the debugging results of Oozie jobs? (multiple choice)
- A. Check whether the returned result of Oozie's JAVA API meets expectations
- B. Oozie's own web interface can also view job execution results
- C. View program running results through Hue's workflow dashboard
- D. Use Hue's file browser to check whether the desired file is generated in the HDFS specified directory
Answer: A,B,C,D
NEW QUESTION 73
Regarding the Hive service of the FusionInsight HD platform and its WebHCat development interface, which of the following descriptions is incorrect?
- A. Support REST-based query request
- B. You can create tables, query and other operations through WebHCat
- C. The data format returned by WebHCat is XML
- D. WebHCat provides external services based on HTTP and HTTPS protocols
Answer: C
NEW QUESTION 74
Which of the following methods can generate DStream objects?
- A. StreamingContext.socketStream(..)
- B. KafkaUtils.createStream(...)
- C. KafkaUtils.createDirectStream(...)
- D. StreamingContext.fileStream(...)
Answer: A,B,C,D
NEW QUESTION 75
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. In the configuration set, the DirectoryFactory parameter in the solrconfig.xml file can be set to org.apache.solr.core.NIOFSDirectoryFactory
- 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. 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
- D. 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.
Answer: A,B,D
NEW QUESTION 76
In FusionInsigt HD, if an application wants to complete Kerberos security authentication, which of the following options must be used? (multiple choice)
- A. jaas.conf configuration file
- B. User account applied for on FusionInsight Manager
- C. krb5.conf configuration file
- D. The keytab file of the user account
Answer: B,C,D
NEW QUESTION 77
There is a file test.txt in the root directory of the HDFS cluster. Which of the following commands can check the DatNode node information stored in this file?
- A. hdfs fsck /test.txt -locations
- B. hdfs fsck /test.txt -blocks
- C. hdfs fsck /test.txt -files
- D. hdfs fsck /test.txt -list -corruptfileblocks
Answer: A
NEW QUESTION 78
When a task is submitted to the YARN cluster, which of the following options will generate a job id for the task?
- A. ResourceManager
- B. NodeManager
- C. AppMaster
- D. container
Answer: A
NEW QUESTION 79
In FusionInsight HD, when using Streaming's Linux command line mode to submit a topology, a user with Streaming submission permission needs to be used for kinit authentication
- A. True
- B. False
Answer: A
NEW QUESTION 80
Regarding the characteristics of Redis, which of the following descriptions is correct? (multiple choice)
- A. Rich data structure
- B. Support SQL query interface
- C. Low latency
- D. Support data persistence
Answer: A,C,D
NEW QUESTION 81
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.flatMap(_.split (" " )).map(word => (word,word.Iength())).reduceByKey (_ +_).print()
- C. Iines.flatMap(_.split (" " )).map(word => (word, 1)).reduce(_ +_).print()
- D. Iines.fIatMap(_.spIit (" " )).map(word => (word, 1)).reduceByKey(_ +_).print()
Answer: D
NEW QUESTION 82
Which of the following reasons will cause HDFS NameNode to enter safemode (safe read-only mode)? (multiple choice)
- A. The number of lost blocks exceeds the threshold.
- B. The disk space where the metadata of the active and standby NameNodes reside is insufficient.
- C. The missing copy exceeds the threshold.
- D. The damaged copy exceeds the threshold.
Answer: A,B
NEW QUESTION 83
In the V100R002C60 version of the FusionInsight HD system, Hive only supports query services based on the MapReduce engine, and does not support query services based on the Spark engine.
- A. False
- B. True
Answer: A
NEW QUESTION 84
In Kafka, the Producer can ensure that the data is sent in order by configuring the synchronization parameters (producer.type).
- A. True
- B. False
Answer: A
NEW QUESTION 85
Which of the following is not a feature of MapReduce?
- A. Real-time calculation
- B. Easy to program
- C. Good scalability
- D. High fault tolerance
Answer: A
NEW QUESTION 86
Regarding the characteristics of the data collected by Flume, which of the following descriptions is correct?
- A. Parallel collection with MapReduce tasks
- B. Support distributed and streaming collection
- C. Only structured data can be collected
- D. Use external timing tasks to trigger data collection
Answer: B
NEW QUESTION 87
In FusionInsight HD V100R002C60, regarding the Hive Python interface type, which of the following descriptions is incorrect?
- A. The client must be installed with setuptools, and the version is not lower than 5.0
- B. The hive_python_client script provides the function of directly executing SQL, such as hive_python_client'show tables '
- C. Python secondary development does not support secure clusters
- D. The Python version is required to be no lower than 2.6.6 and no higher than 2.7.0
Answer: C
NEW QUESTION 88
There are scenarios where 500G of new data is generated by the online system every day, and these data need to be statistically summarized in dimensions such as days, weeks, and months.
Which table is suitable for Hive processing?
- A. Partition table, partition by day
- B. Tilt table, select the date in the tilt field, and the tilt value is random
- C. Partition + bucket table, partitioned by time, 2560 buckets per partition
- D. Bucket table, according to talent
Answer: A
NEW QUESTION 89
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