實做六

{{{
$ cd /opt/hadoop
$ bin/hadoop dfs -mkdir input
$ echo "I like NCHC Cloud Course." > input1
$ echo "I like nchc Cloud Course, and we enjoy this crouse." > input2
$ bin/hadoop dfs -put input1 input
$ bin/hadoop dfs -put input2 input
$ bin/hadoop dfs -ls input
}}}

 * 編輯[attachment:wiki:jazz/Hadoop_Lab6:WordCount.java?format=raw WordCount.java]

{{{
$ mkdir MyJava
$ javac -classpath hadoop-*-core.jar -d MyJava WordCount.java
$ jar -cvf wordcount.jar -C MyJava .
$ bin/hadoop jar wordcount.jar WordCount input/ output/
$ dfs -cat output/part-00000
}}}

-----
{{{
$ echo "\." >pattern.txt && echo "\," >>pattern.txt
$ bin/hadoop dfs -put pattern.txt ./
$ mkdir MyJava2
}}}

 * 編輯WordCount2.java

{{{
$ javac -classpath hadoop-*-core.jar -d MyJava2 WordCount2.java
$ jar -cvf wordcount2.jar -C MyJava2 .
$ bin/hadoop jar wordcount2.jar WordCount2 input output2 -skip pattern.txt
$ dfs -cat output2/part-00000
$ bin/hadoop jar wordcount2.jar WordCount2 -Dwordcount.case.sensitive=false input output3 -skip pattern.txt
$ dfs -cat output3/part-00000
}}}