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Huawei HCIP-Big Data Developer V1.0 Sample Questions:

1. In the Solr application query scenario, when the query results are paged in depth, the cursor needs to be used to page in depth. Which of the following is correct about the cursor? (multiple choice)

A) The query field must be sorted
B) The uniqueKey field must be sorted
C) In the first query request, you need to specify the query parameters, the operation method is as follows: solrQuery.set (CursorMarkParams.CURSOR_MARK_PARAM, CursorMarkParams.CURSOR_MARK_START);
D) When querying, the start parameter cannot be included in the request
E) There will be nextCursorMark in the return result of Solr, use this value as oursorMark in the next call

2. 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 and Y have the same performance
B) It is impossible to determine the performance difference between X and Y
C) X has lower performance than Y
D) X has higher performance than Y

3. 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) 20
B) 30
C) 5
D) 10

4. In MapReduce application development, which of the following JAVA classes is responsible for managing and running a computing task?

A) Configuration
B) Context
C) FileSystem
D) lob

5. 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) Create a secondary index
C) Pre-division region
D) Redundancy method (use space for time plant efficiency)

Solutions: