a) Mapperb) Reducerc) Writabled) Readable Answer: bExplanation: Reducer implementations can access the JobConf for the ...
View QuestionPoint out the wrong statement.
a) The framework calls reduce method for each <key, (list of values)> pair in the grouped inputsb) The ...
View Question_____________ is used to read data from bytes buffers.
a) write()b) read()c) readwrite()d) all of the mentioned Answer: aExplanation: readfully method can also be ...
View Question______________ is method to copy byte from input stream to any other stream in Hadoop.
a) IOUtilsb) Utilsc) IUtilsd) All of the mentioned Answer: aExplanation: IOUtils class is static method ...
View QuestionPoint out the correct statement.
a) The framework groups Reducer inputs by keysb) The shuffle and sort phases occur simultaneously i.e. while outputs ...
View QuestionIn order to read any file in HDFS, instance of __________ is required.
a) filesystemb) datastreamc) outstreamd) inputstream Answer: aExplanation: InputDataStream is used to read data from file.
View QuestionDuring start up, the ___________ loads the file system state from the fsimage and the edits log file.
a) DataNodeb) NameNodec) ActionNoded) None of the mentioned Answer: bExplanation: HDFS is implemented on any ...
View QuestionFor ________ the HBase Master UI provides information about the HBase Master uptime.
a) HBaseb) Ooziec) Kafkad) All of the mentioned Answer: aExplanation: HBase Master UI provides information ...
View QuestionFor YARN, the ___________ Manager UI provides host and port information.
a) Data Nodeb) NameNodec) Resourced) Replication Answer: cExplanation: All the metadata related to HDFS including ...
View QuestionHDFS is implemented in _____________ programming language.
a) C++b) Javac) Scalad) None of the mentioned Answer: bExplanation: HDFS is implemented in Java ...
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