You are required to use what you learned so far to solve a slightly more advanced task. The task is to write a
MapReduce program with Python to count the number of trips for each taxi company and sort the companies
in ascending order.
Both Taxis.txt and Trips.txt will be used and they are stored on HDFS. The code must work for 3 reducers.
Also, you should write up a shell script named Task3-run.sh. Running the shell script, the task is performed
where the shell script and code files are in the folder (no subfolders).
Note that task 3 should have three MapReduce subtasks where the first is a join operation, the second is a
counting operation, and the third is sorting. The execution of the three subtasks should be specified in Task3-
run.sh. It is illegal to copy Trips.txt and/or Taxis.txt to the local machine and process them.