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Which one of the following statements Is true?
Given the following Hive commands: Which one of the following statements Is true?A . The file mydata.txt is copied to a subfolder of /apps/hive/warehouseB . The file mydata.txt is moved to a subfolder of /apps/hive/warehouseC . The file mydata.txt is copied into Hive's underlying relational database 0.D . The file...
Which HDFS command copies an HDFS file named foo to the local filesystem as localFoo?
Which HDFS command copies an HDFS file named foo to the local filesystem as localFoo?A . hadoop fs -get foo LocalFooB . hadoop -cp foo LocalFooC . hadoop fs -Is fooD . hadoop fs -put foo LocalFooView AnswerAnswer: A
Indentify which invocation correctly passes.mapred.job.name with a value of Example to Hadoop?
You need to run the same job many times with minor variations. Rather than hardcoding all job configuration options in your drive code, you’ve decided to have your Driver subclass org.apache.hadoop.conf.Configured and implement the org.apache.hadoop.util.Tool interface. Indentify which invocation correctly passes.mapred.job.name with a value of Example to Hadoop?A . hadoop...
How many files will be processed by the FileInputFormat.setInputPaths () command when it's given a path object representing this directory?
You have a directory named jobdata in HDFS that contains four files: _first.txt, second.txt, .third.txt and #data.txt. How many files will be processed by the FileInputFormat.setInputPaths () command when it's given a path object representing this directory?A . Four, all files will be processedB . Three, the pound sign is...
Which InputFormat should you use to complete the line: conf.setInputFormat (____.class) ; ?
Given a directory of files with the following structure: line number, tab character, string: Example: 1abialkjfjkaoasdfjksdlkjhqweroij 2kadfjhuwqounahagtnbvaswslmnbfgy 3kjfteiomndscxeqalkzhtopedkfsikj You want to send each line as one record to your Mapper. Which InputFormat should you use to complete the line: conf.setInputFormat (____.class) ; ?A . SequenceFileAsTextInputFormatB . SequenceFileInputFormatC . KeyValueFileInputFormatD ....
Which is the best way to make this library available to your MapReducer job at runtime?
You need to perform statistical analysis in your MapReduce job and would like to call methods in the Apache Commons Math library, which is distributed as a 1.3 megabyte Java archive (JAR) file. Which is the best way to make this library available to your MapReducer job at runtime?A ....
Which HDFS command uploads a local file X into an existing HDFS directory Y?
Which HDFS command uploads a local file X into an existing HDFS directory Y?A . hadoop scp X YB . hadoop fs -localPut X YC . hadoop fs-put X YD . hadoop fs -get X YView AnswerAnswer: C
What data does a Reducer reduce method process?
What data does a Reducer reduce method process?A . All the data in a single input file.B . All data produced by a single mapper.C . All data for a given key, regardless of which mapper(s) produced it.D . All data for a given value, regardless of which mapper(s) produced...
Which one of the following statements regarding the components of YARN is FALSE?
Which one of the following statements regarding the components of YARN is FALSE?A . A Container executes a specific task as assigned by the ApplicationMasterB . The ResourceManager is responsible for scheduling and allocating resourcesC . A client application submits a YARW job to the ResourceManagerD . The ResourceManager monitors...
Which interface should your class implement?
You are developing a combiner that takes as input Text keys, IntWritable values, and emits Text keys, IntWritable values. Which interface should your class implement?A . Combiner <Text, IntWritable, Text, IntWritable>B . Mapper <Text, IntWritable, Text, IntWritable>C . Reducer <Text, Text, IntWritable, IntWritable>D . Reducer <Text, IntWritable, Text, IntWritable>E ....
