a) Oozie b) Avro c) cTakes d) Lucene Answer: b Explanation: Avro is a splittable data format ...
View QuestionThe _________ as just the value field append(value) and the key is a LongWritable that contains the record number, count + 1.
a) SetFile b) ArrayFile c) BloomMapFile d) None of the mentioned Answer: b Explanation: The SetFile instead ...
View QuestionThe ______ file is populated with the key and a LongWritable that contains the starting byte position of the record.
a) Array b) Index c) Immutable d) All of the mentioned Answer: b Explanation: Index doesn’t contains ...
View QuestionThe __________ is a directory that contains two SequenceFile.
a) ReduceFile b) MapperFile c) MapFile d) None of the mentioned Answer: c Explanation: Sequence files are ...
View QuestionWhich of the following format is more compression-aggressive?
a) Partition Compressed b) Record Compressed c) Block-Compressed d) Uncompressed Answer: c Explanation: SequenceFile key-value list can ...
View QuestionPoint out the wrong statement.
a) The data file contains all the key, value records but key N + 1 must be greater ...
View QuestionHow many formats of SequenceFile are present in Hadoop I/O?
a) 2 b) 3 c) 4 d) 5 Answer: b Explanation: SequenceFile has 3 available formats: An ...
View QuestionApache Hadoop ___________ provides a persistent data structure for binary key-value pairs.
a) GetFile b) SequenceFile c) Putfile d) All of the mentioned Answer: b Explanation: SequenceFile is append-only.
View QuestionPoint out the correct statement.
a) The sequence file also can contain a “secondary” key-value list that can be used as file Metadata
View QuestionHadoop I/O Hadoop comes with a set of ________ for data I/O.
a) methods b) commands c) classes d) none of the mentioned Answer: d Explanation: Hadoop ...
View Question