There are 1 master and N workers. Master receives a queue of works and distribute work evenly to given number of workers. Workers should repeatedly ask the master which file they should work on (until they learn there is no work left to do). They should perform wordcount and output results to a file. When all input files have been processed, the master should inform the workers that all work has concluded; upon receiving this message, the workers should exit. The master will then read all of the files produced by the workers, accumulates the results, and output them. The master ensures that all N workers are up by pinging them periodically with a heartbeat message every 3 seconds. If a worker stops responding, then the master must spawn another worker to continue the left-over work of the death worker.
Compile and test
./gradlew build
Compile only
./gradlew assemble
Test
./gradlew test
For those who use Windows, you should run gradlew.bat with the same parameters.
Both IDEA and Eclipse have plugins for Gradle.
Some existing tests need Java 8.
src/main/java is for word count code.
src/test/java is for tests. And src/test/resources is for test data.