Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
The WordCount problem MapReduce algorithm workflow. The algorithm counts the number of occurrences for every word in the file. The file is chunked and distributed over the computing nodes in the cluster. The mapper must be completed to start the reducer phase, otherwise an error will be reported and the execution will be stopped.
