Developing MapReduce Applications MCQ question and answer with solution

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. . . . . . . . can change the maximum number of cells of a column family.

A) set B) reset C) alter D) select

Discuss

Answer & Solution

Answer: Option C

No explanation is given for this question. Let's Discuss on Board

Point out the correct statement.

A) Mapper maps input key/value pairs to a set of intermediate key/value pairs B) Applications typically implement the Mapper and Reducer interfaces to provide the map and reduce methods C) Mapper and Reducer interfaces form the core of the job D) None of the mentioned

Discuss

Answer & Solution

Answer: Option D

No explanation is given for this question. Let's Discuss on Board

Point out the wrong statement.

A) It is legal to set the number of reduce-tasks to zero if no reduction is desired B) The outputs of the map-tasks go directly to the FileSystem C) The Mapreduce framework does not sort the map-outputs before writing them out to the FileSystem D) None of the mentioned

Discuss

Answer & Solution

Answer: Option D

No explanation is given for this question. Let's Discuss on Board

Which of the following parameter is the threshold for the accounting and serialization buffers?

A) io.sort.spill.percent B) io.sort.record.percent C) io.sort.mb D) None of the mentioned

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

Which of the following is not a table scope operator?

A) MEMSTORE_FLUSH B) MEMSTORE_FLUSHSIZE C) MAX_FILESIZE D) All of the mentioned

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

The right level of parallelism for maps seems to be around . . . . . . . . maps per-node.

A) 1-10 B) 10-100 C) 100-150 D) 150-200

Discuss

Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

. . . . . . . . class adds HBase configuration files to its object.

A) Configuration B) Collector C) Component D) None of the mentioned

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

. . . . . . . . is the main configuration file of HBase.

A) hbase.xml B) hbase-site.xml C) hbase-site-conf.xml D) none of the mentioned

Discuss

Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

. . . . . . . . is a generalization of the facility provided by the MapReduce framework to collect data output by the Mapper or the Reducer.

A) OutputCompactor B) OutputCollector C) InputCollector D) All of the mentioned

Discuss

Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

HBase uses the . . . . . . . . File System to store its data.

A) Hive B) Imphala C) Hadoop D) Scala

Discuss

Answer & Solution

Answer: Option C

No explanation is given for this question. Let's Discuss on Board

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Developing MapReduce Applications MCQ question and answer with solution | Hadoop MCQs