Explanation:With multiple reducers, records will be allocated evenly across reduce tasks, with all records that share the same key being processed by the same reduce task. 7. __________ class allows you to specify the InputFormat and Mapper to use on a per-path basis.
A. MultipleOutputs
B. MultipleInputs
C. SingleInputs
D. None of the mentioned
Answer:A
Explanation:With multiple reducers, records will be allocated evenly across reduce tasks, with all records that share the same key being processed by the same reduce task. 7. __________ class allows you to specify the InputFormat and Mapper to use on a per-path basis.
A. MultipleOutputs B. MultipleInputs C. SingleInputs D. None of the mentioned
Explanation:One might be tab-separated plain text, the other a binary sequence file. Even if they are in the same format, they may have different representations, and therefore need to be parsed differently. 8. ___________ is an input format for reading data from a relational database, using JDBC.