Explanation:SequenceFile has 3 available formats: An “Uncompressed” format, A “Record Compressed” format and a “Block-Compressed”. 5. Point out the wrong statement :
A. The data file contains all the key, value records but key N + 1 must be greater then or equal to the key N
B. Sequence file is a kind of hadoop file based data structure
C. Map file type is splittable as it contains a sync point after several records
D. None of the mentioned
Answer:A
Explanation:SequenceFile has 3 available formats: An “Uncompressed” format, A “Record Compressed” format and a “Block-Compressed”. 5. Point out the wrong statement :
A. The data file contains all the key, value records but key N + 1 must be greater then or equal to the key N B. Sequence file is a kind of hadoop file based data structure C. Map file type is splittable as it contains a sync point after several records D. None of the mentioned
Explanation:Map file is again a kind of hadoop file based data structure and it differs from a sequence file in a matter of the order. 6. Which of the following format is more compression-aggressive ?