Hadoop: Menjalankan MapReduce Job -WordCount
Revision as of 17:21, 9 November 2015 by Onnowpurbo (talk | contribs)
Sumber: http://wiki.apache.org/hadoop/WordCount
Buat File Data Sederhana
cd ~ touch file01 touch file02 echo "Hello World Bye World" > file01 echo "Hello Hadoop Goodbye Hadoop" > file02
hadoop dfs -ls /usr/joe/wordcount/input/ /usr/joe/wordcount/input/file01 /usr/joe/wordcount/input/file02
hadoop dfs -cat /usr/joe/wordcount/input/file01 Hello World Bye World
hadoop dfs -cat /usr/joe/wordcount/input/file02 Hello Hadoop Goodbye Hadoop
hadoop jar hadoop-*-examples.jar wordcount [-m <#maps>] [-r <#reducers>] <in-dir> <out-dir>
hadoop dfs -copyFromLocal <local-dir> <hdfs-dir>