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

1. Which of the following measures can improve the query performance of HBase? (multiple choice)

A) Use secondary indexes to adapt to more query scenarios
B) The data read at the same time are stored in the same cell
C) Pre-divide regions to make regions evenly distributed and improve concurrency
D) Query frequent attributes are placed in front of rowkey

2. 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) When querying, the start parameter cannot be included in the request
B) The uniqueKey field must be sorted
C) The query field must be sorted
D) There will be nextCursorMark in the return result of Solr, use this value as oursorMark in the next call
E) 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);

3. 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

4. For files stored in N (N>1) copies, the HDFS client initiates a file read request. If the read copy node fails, it will directly return to failure and will not go to other copy nodes for reading.

A) True
B) False

5. When designing a certain collection of Solr, you need to design its Schema, and realize the design of the Schema by configuring the schema.xml file. What is wrong about the Schema statement below?

A) For a field of the same document, there are multiple values, and they all need to be retained, then the multiValued of the field must be set to true.
B) copyField can be defined as follows: <field name= " cat " type= " string " indexed = " true " stored = " true " docValues= " true " multiValued= " false " /> <field name= " dog " type = " string " indexed = " true " stored = " true " docValues= " true " multi Valued = " false " /> <field name= " text " type= " text_general " indexed = " true " stored = " false " multiValued = " false " /> <copyField source= " cat " dest= " text " maxChars= " 30000 " /> <copyField source= " dog " dest= " text " maxChars = " 30000 " />.
C) Schema is similar to the table structure in a relational database. It is used to define the structure of index data. It mainly consists of three parts: unlqueKey, Field and FleldType.
D) For fields that do not need to store the original value, the stored attribute can be set to false.

Solutions: