I submitted a mapreduce job and checked the log. In the log l see that there are many mappers, each mapper processes one split, and the processing details of each mapper is logged in the log file sequentially in time.
However, I would like to check if my job is running parallelly and I want to see how many mappers are running concurrently. I don't know where to find these informations. Please help me, thx!
Use following Jobtracker Web UI and drill down to executing MapReduce job
http://<Jobtracker-HostName>:50030/
Collected from the Internet
Please contact [email protected] to delete if infringement.
Comments