Test Hadoop HDFs uploads with Mr

1. Add a new document to any directory. The content is freely entered

mkdir words

2. Create a new file entry directory in HDFs

./hdfs Dfs-mkdir/test

3. Upload the new document (/home/hadoop/test/words) to the new (test) HDFs directory

./hdfs dfs-put/home/hadoop/test/words/test/

4. See if the document is successful

./hdfs Dfs-ls

5. Execution wordscount by column calculation

Bin/hadoop jar Share/hadoop/mapreduce/hadoop-mapreduce-examples-2.7.4.jar Wordcount/test/words/test/out

6. View the calculation results directory

Bin/hdfs dfs-ls/test/out/

7. View Calculation log

Bin/hadoop fs-cat/test/out/part-r-00000

Test Hadoop HDFs uploads with Mr