This is the 10th day of my participation in the Gwen Challenge.More article challenges
This case is a regular expression to match characters, specific steps are as follows:
Create an input folder under the hadoop-2.7.2 file
2. Copy the Hadoop XML configuration file to input
3. Run the MapReduce program in the share directory
This case is a case of counting the number of words, and it is also a case that interviewers like to ask, often with your handwritten code, so it is necessary to look at the source code. Today xiaobian only take you to run, the specific steps are as follows:
Create a wcinput folder under the Hadoop-2.7.2 file
2. Create a wC. input file under the wcinput file
4. Go to /opt/module/hadoop-2.7.2
Through today’s case study, you must have a deep understanding of the local operation mode. Stay tuned for the next article about the second operation mode!
Xiaobian will continue to update big data and other content, please stay tuned. More exciting content, please pay attention to the public number: Xiao Han senior take you to learn
