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Your customer is using the IKM SQL to HDFS File (Sqoop) module to move data from Oracle to HDFS. However, the customer is experiencing performance issues. What change should you make to the default configuration to improve performance?
Correct Answer: B
Explanation/Reference: Controlling the amount of parallelism that Sqoop will use to transfer data is the main way to control the load on your database. Using more mappers will lead to a higher number of concurrent data transfer tasks, which can result in faster job completion. However, it will also increase the load on the database as Sqoop will execute more concurrent queries. References: https://community.hortonworks.com/articles/70258/sqoop-performance-tuning.html