Q132284591 发表于 2018-10-29 07:22:45

通过hadoop自带的demo运行单词统计

  1)mkdir input
  2)cdintput
  3)echo “hello word” > file1.txt
  4)echo “hello Hadoop” > file2.txt
  5)echo “hello mapreduce” >> file2.txt
  6) more file2.txt
  7) hadoop fs -mkdir/wc_input
  8) hadoop fs -ls /
  9) hadoop fs -put ~/input/fi* /wc_input
  10)hadoop fs -ls/wc_input
  11) hadoop jar share/hadoop/mapreduce/hadoop-mapreduce-examples-2.7.3.jar wordcount /wc_input /output
  12)hadoop fs -ls /output
  13)hadoop fs -cat /output/part-r-00000

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