AVRO QUIZ DESCRIPTION Total Questions −30 00 Max Time − 15:00 The key and value classes have to be _________ by the Mapreduce framework. collected serializable compacted 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 Which of the following adds a configuration resource? addDeprecation setDeprecatedProperties addDefaultResource addResource ___________ gives site-specific configuration for a given hadoop installation. core-default.xml core-site.xml coredefault.xml all 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 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 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 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 Avro is said to be the future _______ layer of Hadoop. RMC RPC RDC All of the mentioned Key classes have to implement the __________ interface to facilitate sorting by the framework. Writable Comparable WritableComparable 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 Hadoop _________ is a SWIG- compatible C++ API to implement MapReduce applications. Streaming Pipes Orchestration All of the mentioned _______ job usually splits the input data-set into independent chunks which are processed by the map tasks in a completely parallel manner. Tasker MapReduce Tasktrack None of the mentioned ________ method adds the deprecated key to the global deprecation map. addDeprecits addDeprecation keyDeprecation none of the mentioned Point out the correct statement. Avro provides functionality similar to systems such as Thrift When Avro is used in RPC, the client and server exchange data in the connection handshake Apache Avro, Avro, Apache, and the Avro and Apache logos are trademarks of The Java Foundation 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 The ___________ executes the Mapper/ Reducer task as a child process in a separate jvm. JobTracker JobTracker TaskScheduler None of the mentioned Thrift resolves possible conflicts through _________ of the field. Name Static number UID None of the mentioned The option ___________ allows to pass comma separated list of archives as arguments. optionname -libjars -archives 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 ________ is the primary interface for a user to describe a MapReduce job to the Hadoop framework for execution. JobConfig JobConf JobConfiguration All of the mentioned ________ method clears all keys from the configuration. clear addResource getClass none of the mentioned Avro schemas are defined with _____ JSON XML JAVA All of the mentioned We can declare the schema of our data either in a ______ file. JSON XML SQL R _________ gives site-specific configuration for a given hadoop installation. core-default.xml core-site.xml coredefault.xml all 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 _____________ is percentage of memory relative to the maximum heap size in which map outputs may be retained during the reduce. mapred.job.shuffle.merge.percent mapred.job.reduce.input.buffer.percen mapred.inmem.merge.threshold io.sort.factor 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 Previous Next Total Question16 Wrong Answer13 Right Answer13
