AVRO QUIZ DESCRIPTION Total Questions −30 00 Max Time − 15:00 Point out the correct statement. The right number of reduces seems to be 0.95 or 1.75 Increasing the number of reduces increases the framework overhead With 0.95 all of the reduces can launch immediately and start transferring map outputs as the maps finish All of the mentioned ______ checks whether the given key is deprecated. isDeprecated setDeprecated isDeprecatedif all of the mentioned Hadoop _________ is a SWIG- compatible C++ API to implement MapReduce applications. Streaming Pipes Orchestration All of the mentioned _________ facilitates construction of generic data-processing systems and languages. Untagged data Dynamic typing No manually-assigned field IDs All of the mentioned Avro schemas are defined with _____ JSON XML JAVA All of the mentioned Point out the wrong statement. addDeprecations adds a set of deprecated keys to the global deprecations configuration parameters cannot be declared final addDeprecations method is lockless none of the mentioned The ___________ executes the Mapper/ Reducer task as a child process in a separate jvm. JobTracker JobTracker TaskScheduler None of the mentioned Which of the following partitions the key space? Partitioner Compactor Collector All of the mentioned Maximum virtual memory of the launched child-task is specified using _________ mapv mapv mapvim All of the mentioned Which of the following adds a configuration resource? addDeprecation setDeprecatedProperties addDefaultResource addResource _______ is useful for iterating the properties when all deprecated properties for currently set properties need to be present. addResource setDeprecatedProperties addDefaultResource none of the mentioned Which of the following is the default Partitioner for Mapreduce? MergePartitioner HashedPartitioner HashPartitioner None of the mentioned Point out the correct statement. Another limitation of the Hadoop MapReduce framework is its pull-based scheduling model The MapReduce framework sorts the outputs of the maps, which are then input to the reduce tasks The MapReduce framework takes care of scheduling tasks, monitoring them and re-executes the failed tasks All of the mentioned ________ method clears all keys from the configuration. clear addResource getClass none of the mentioned Hadoop __________ is a utility which allows users to create and run jobs with any executables. Streaming Pipes Orchestration All of the mentioned ___________ gives site-specific configuration for a given hadoop installation. core-default.xml core-site.xml coredefault.xml all of the mentioned Point out the wrong statement. It is legal to set the number of reduce-tasks to zero if no reduction is desired The outputs of the map-tasks go directly to the FileSystem The Mapreduce framework does not sort the map-outputs before writing them out to the FileSystem None of the mentioned When using reflection to automatically build our schemas without code generation, we need to configure Avro using? AvroJob.Reflect(jConf); AvroJob.setReflect(jConf); Job.setReflect(jConf); None of the mentioned Point out the correct statement. Configuration parameters may be declared static Unless explicitly turned off, Hadoop by default specifies two resources Configuration class provides access to configuration parameters None of the mentioned __________ is a generalization of the facility provided by the MapReduce framework to collect data output by the Mapper or the Reducer. OutputCompactor OutputCollector InputCollector All of the mentioned ________ method adds the deprecated key to the global deprecation map. addDeprecits addDeprecation keyDeprecation none of the mentioned Which of the following parameter is the threshold for the accounting and serialization buffers? io.sort.spill.percent io.sort.record.percent io.sort.mb None of the mentioned Point out the wrong statement. Apache Avro™ is a data serialization system Avro provides simple integration with dynamic languages Avro provides rich data structures All of the mentioned The option ___________ allows to pass comma separated list of archives as arguments. optionname -libjars -archives none of the mentioned The ___________ executes the Mapper/ Reducer task as a child process in a separate jvm. JobTracker JobTracker TaskScheduler None of the mentioned Administrators typically define parameters as final in __________ for values that user applications may not alter. core-default.xml core-site.xml coredefault.xml all of the mentioned Key classes have to implement the __________ interface to facilitate sorting by the framework. Writable Comparable WritableComparable None of the mentioned Thrift resolves possible conflicts through _________ of the field. Name Static number UID None of the mentioned With ______ we can store data and read it easily with various programming languages. Thrift Protocol Buffers Avro None of the mentioned The ________ option allows applications to add jars to the classpaths of the maps and reduces. optionname -libjars -archives all of the mentioned Previous Next Total Question16 Wrong Answer13 Right Answer13
