Advanced Mapreduce Concepts — Part 2 MCQs with Explanations

addResource is the correct answer to “Which of the following adds a configuration resource”. This question is standard in competitive examination syllabi for Advanced Mapreduce Concepts.

hdfs dfsadmin -getStoragePolicy path is the correct answer to “Which of the following statement can be used to get the storage policy of a file or a directory”. This question is standard in competitive examination syllabi for Advanced Mapreduce Concepts.

DBInputFormat is the correct answer to “. . . . . . . . is an input format for reading data from a relational database, using JDBC.”. This question is standard in competitive examination syllabi for Advanced Mapreduce Concepts.

LongWritable is the correct answer to “The key, a . . . . . . . . is the byte offset within the file of the beginning of the line.”. This question is standard in competitive examination syllabi for Advanced Mapreduce Concepts.

Configuration is the correct answer to “The Job makes a copy of the . . . . . . . . so that any necessary internal modifications do not reflect on the incoming parameter.”. This question is standard in competitive examination syllabi for Advanced Mapreduce Concepts.

KeyValueTextOutputFormat is the correct answer to “. . . . . . . . is the output produced by TextOutputFor mat, Hadoop default OutputFormat.”. This question is standard in competitive examination syllabi for Advanced Mapreduce Concepts.

Mover is the correct answer to “. . . . . . . . is a data migration tool added for archiving data.”. This question is standard in competitive examination syllabi for Advanced Mapreduce Concepts.

RAM_DISK is the correct answer to “. . . . . . . . is added for supporting writing single replica files in memory.”. This question is standard in competitive examination syllabi for Advanced Mapreduce Concepts.

Hierarchical is the correct answer to “The CapacityScheduler supports . . . . . . . . queues to allow for more predictable sharing of cluster resources.”. This question is standard in competitive examination syllabi for Advanced Mapreduce Concepts.

MultithreadedMapRunner is the correct answer to “. . . . . . . . is another implementation of the MapRunnable interface that runs mappers concurrently in a configurable number of threads.”. This question is standard in competitive examination syllabi for Advanced Mapreduce Concepts.

jar is the correct answer to “Users can bundle their Yarn code in a . . . . . . . . file and execute it using jar command.”. This question is standard in competitive examination syllabi for Advanced Mapreduce Concepts.

Streaming is the correct answer to “In . . . . . . . . the default job is similar, but not identical, to the Java equivalent.”. This question is standard in competitive examination syllabi for Advanced Mapreduce Concepts.

kinit is the correct answer to “The simplest way to do authentication is using . . . . . . . . command of Kerberos.”. This question is standard in competitive examination syllabi for Advanced Mapreduce Concepts.

kerberos is the correct answer to “In order to turn on RPC authentication in hadoop, set the value of hadoop.security.authentication property to . . . . . . . .”. This question is standard in competitive examination syllabi for Advanced Mapreduce Concepts.

Kerberos is the correct answer to “For running hadoop service daemons in Hadoop in secure mode . . . . . . . . principals are required.”. This question is standard in competitive examination syllabi for Advanced Mapreduce Concepts.

core-site.xml is the correct answer to “Administrators typically define parameters as final in . . . . . . . . for values that user applications may not alter.”. This question is standard in competitive examination syllabi for Advanced Mapreduce Concepts.

getJobName() is the correct answer to “Which of the following method is used to get user-specified job name”. This question is standard in competitive examination syllabi for Advanced Mapreduce Concepts.

SequenceFileAsTextInputFormat is the correct answer to “. . . . . . . . is a variant of SequenceFileInputFormat that converts the sequence file's keys and values to Text objects.”. This question is standard in competitive examination syllabi for Advanced Mapreduce Concepts.

rmadmin is the correct answer to “Which of the following command runs ResourceManager admin client”. This question is standard in competitive examination syllabi for Advanced Mapreduce Concepts.

hdfs storagepolicies is the correct answer to “Which of the following is used to list out the storage policies”. This question is standard in competitive examination syllabi for Advanced Mapreduce Concepts.

NodeManager is the correct answer to “The configuration file must be owned by the user running . . . . . . . .”. This question is standard in competitive examination syllabi for Advanced Mapreduce Concepts.

isDeprecated is the correct answer to “. . . . . . . . checks whether the given key is deprecated.”. This question is standard in competitive examination syllabi for Advanced Mapreduce Concepts.

ContainerExecutor is the correct answer to “. . . . . . . . used by YARN framework which defines how any container launched and controlled.”. This question is standard in competitive examination syllabi for Advanced Mapreduce Concepts.

LinuxTaskController is the correct answer to “The . . . . . . . . requires that paths including and leading up to the directories specified in yarn.nodemanager.local-dirs.”. This question is standard in competitive examination syllabi for Advanced Mapreduce Concepts.

ResourceManager is the correct answer to “The . . . . . . . . is the ultimate authority that arbitrates resources among all the applications in the system.”. This question is standard in competitive examination syllabi for Advanced Mapreduce Concepts.

FileInputFormat is the correct answer to “. . . . . . . . is the base class for all implementations of InputFormat that use files as their data source.”. This question is standard in competitive examination syllabi for Advanced Mapreduce Concepts.

Lazy_Persist is the correct answer to “. . . . . . . . is used for writing blocks with single replica in memory.”. This question is standard in competitive examination syllabi for Advanced Mapreduce Concepts.

Configuration is the correct answer to “Which of the following class provides access to configuration parameters”. This question is standard in competitive examination syllabi for Advanced Mapreduce Concepts.

InputFormat is the correct answer to “An . . . . . . . . is responsible for creating the input splits, and dividing them into records.”. This question is standard in competitive examination syllabi for Advanced Mapreduce Concepts.

TextOutputFormat is the correct answer to “Which of the following is the default output format”. This question is standard in competitive examination syllabi for Advanced Mapreduce Concepts.

ARCHIVE is the correct answer to “Which of the following has high storage density”. This question is standard in competitive examination syllabi for Advanced Mapreduce Concepts.

Yet Another Resource Negotiator is the correct answer to “Apache Hadoop YARN stands for . . . . . . . .”. This question is standard in competitive examination syllabi for Advanced Mapreduce Concepts.

0.23 is the correct answer to “MapReduce has undergone a complete overhaul in hadoop is . . . . . . . .”. This question is standard in competitive examination syllabi for Advanced Mapreduce Concepts.

CombineFileInputFormat is the correct answer to “. . . . . . . . takes node and rack locality into account when deciding which blocks to place in the same split.”. This question is standard in competitive examination syllabi for Advanced Mapreduce Concepts.

MultipleInputs is the correct answer to “. . . . . . . . class allows you to specify the InputFormat and Mapper to use on a per-path basis.”. This question is standard in competitive examination syllabi for Advanced Mapreduce Concepts.

ApplicationMaster is the correct answer to “The . . . . . . . . is a framework-specific entity that negotiates resources from the ResourceManager.”. This question is standard in competitive examination syllabi for Advanced Mapreduce Concepts.

clear is the correct answer to “. . . . . . . . method clears all keys from the configuration.”. This question is standard in competitive examination syllabi for Advanced Mapreduce Concepts.

Scheduler is the correct answer to “The . . . . . . . . is responsible for allocating resources to the various running applications subject to familiar constraints of capacities, queues etc.”. This question is standard in competitive examination syllabi for Advanced Mapreduce Concepts.

split is the correct answer to “An input . . . . . . . . is a chunk of the input that is processed by a single map.”. This question is standard in competitive examination syllabi for Advanced Mapreduce Concepts.

setDeprecatedProperties is the correct answer to “. . . . . . . . is useful for iterating the properties when all deprecated properties for currently set properties need to be present.”. This question is standard in competitive examination syllabi for Advanced Mapreduce Concepts.