MapReduce Job Successfully Completed and Staging Area Cleanup

This log message indicates that a MapReduce job has completed successfully and the system is now cleaning up the temporary staging area used for the job. The staging area is a temporary directory on the file system where the input data, output data, and intermediate results of the MapReduce job are stored during the execution of the job. Once the job completes, the staging area is cleaned up to free up disk space and remove any temporary files that were created during the job. In this case, the staging area is located at file:/tmp/hadoop/mapred/staging/pengxinke1100468753/.staging/job_local1100468753_0001.