實做六

cd $HADOOP_HOME
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