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NEW QUESTION 88
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
Answer: A
NEW QUESTION 89
Document is the main entity stored in the SolrColud cluster. It is the basic unit of indexing and query. It can contain one or more fields and is a set of data describing certain things. Each document must contain a uniqueKey field that can uniquely identify the document.
- A. True
- B. False
Answer: A
NEW QUESTION 90
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 91
In Spark, SparkSQL is an independent module, which can independently complete SQL statement parsing, optimization, and execution without relying on SparkCore.
- A. False
- B. True
Answer: A
NEW QUESTION 92
Use FusionInsight HD's Hive to query data. When the amount of intermediate result data to be queried is large, you can choose to compress the intermediate result data to obtain better performance.
Which of the following are the relevant parameters for Hive intermediate result compression? (multiple choice)
- A. hive.exec.compress.intermediate
- B. hive.intermediate.compression.type
- C. hive.intermediate.compression.codec
- D. hive.exec.compress.output
Answer: A,B,C
NEW QUESTION 93
In the Fusioninsight HD product, what is wrong about the Kafka secure and non-secure port description?
(Note: The old API refers to the old Producer API and the old Consumer API. Among them, the old Consumer API: refers to the interface defined in kafka.consumer.ConsumerConnector; the old Producer API: refers to the interface defined in kafka.producer.Producer.)
- A. The old API only supports access to port 21005; the new API is compatible with access to non-secure port 21005 and secure port 21007.
- B. Kafka cluster security access port defaults to 21007, non-secure access port defaults to 21005.
- C. The premise for the old API to access a topic through port 21005 is that the server parameter allow.everyone.if.no.acl.found is set to true, and the topic does not have ACL attributes set
- D. For topics with ACL set, you can use the old API to connect to port 21005 for access.
Answer: D
NEW QUESTION 94
In the implementation of the business logic of HBase writing data, which of the following interfaces or classes does not need to be involved?
- A. PutList
- B. HTable
- C. HBaseAdmin
- D. Put
Answer: C
NEW QUESTION 95
In a MapReduce application, the output of the map function is processed by the MapReduce framework and sent to the reduce function. This process is based on key-value pairs for sorting and grouping.
- A. True
- B. False
Answer: A
NEW QUESTION 96
In FusionInsight HD, regarding Ooze job management, which of the following operations can be performed on suspended jobs? (multiple choice)
- A. submit
- B. resume
- C. kill
- D. run
Answer: B,C
NEW QUESTION 97
Regarding Redis cluster topology information, which of the following descriptions is correct?
- A. Both
- B. The client caches the cluster topology information
- C. Neither
- D. The server caches the cluster topology information
Answer: A
NEW QUESTION 98
In FusionInsight HD, which method of the OozieClient class will be called by the JAVA API of the Oozie client when running tasks?
- A. run
- B. submit
- C. suspend
- D. getJobInfo
Answer: A
NEW QUESTION 99
In Kafka, which of the following commands can check how many partitions a topic has?
- A. kafka-topics.sh --create
- B. kafka-topics.sh --list
- C. kafka-topics.sh --alter
- D. kafka-topics.sh - describe
Answer: D
NEW QUESTION 100
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 101
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 102
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: D
NEW QUESTION 103
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