Hadoop Practice Test 2

1. The ________ method in the ModelCountReducer class "reduces" the values the mapper collects into a derived value.

2. The LZO compression format is composed of approximately __________ blocks of compressed data.

3. The ____________ is an iterator which reads through the file and returns objects using the next() method.

4. __________ facilitates construction of generic data-processing systems and languages.

5. ________ instances are encoded using the number of bytes declared in the schema.

6. Using Hadoop Archives in __________ is as easy as specifying a different input filesystem than the default file system.

7. _____________ are used between blocks to permit efficient splitting of files for MapReduce processing.

8. Point out the correct statement.

9. When using reflection to automatically build our schemas without code generation, we need to configure Avro using?

10. __________ typically compresses files to within 10% to 15% of the best available techniques.