Hadoop MapReduce
HADOOP To Start and Stop Hadoop $ start-dfs.sh --> To start hadoop $ start-yarn.sh ---> To start yarn $ jps --> to view processes status $ stop-yarn.sh --> To Stop yarn $ stop-dfs.sh --> To stop hadoop To Copy File $ hadoop fs -mkdir vrush $ hadoop fs -ls $ hadoop fs -ls vrush $ ls -l $ hadoop fs -copyFromLocal data/*txt vrush MapReduce for Word Counting $ cd myc $ ls -l $ vi map.c $ press esc button :q --> To escape from vi editor $ cc -o mymapper map.c $ cc -o myreduce reduce.c $ ls -l $ hado...