Which two of the following are true about this trivial Pig program' (choose Two)A . The contents of myfile appear on stdoutB . Pig assumes the contents of myfile are comma delimitedC . ABC has...
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...
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...
To use a lava user-defined function (UDF) with Pig what must you do?A . Define an alias to shorten the function nameB . Pass arguments to the constructor of UDFs implementation classC . Register the...
You have written a Mapper which invokes the following five calls to the OutputColletor.collect method: output.collect (new Text (“Apple”), new Text (“Red”) ) ; output.collect (new Text (“Banana”), new Text (“Yellow”) ) ; output.collect (new...
How are keys and values presented and passed to the reducers during a standard sort and shuffle phase of MapReduce?A . Keys are presented to reducer in sorted order; values for a given key are...
You have just executed a MapReduce job. Where is intermediate data written to after being emitted from the Mapper’s map method?A . Intermediate data in streamed across the network from Mapper to the Reduce and...
What is a SequenceFile?A . A SequenceFile contains a binary encoding of an arbitrary number of homogeneous writable objects.B . A SequenceFile contains a binary encoding of an arbitrary number of heterogeneous writable objects.C ....
Which one of the following statements is true about a Hive-managed table?A . Records can only be added to the table using the Hive INSERT command.B . When the table is dropped, the underlying folder...
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...
