向hdfs上传本地文件-Hello World

[hadoop@Master ~]$
hadoop dfs -ls

ls: Cannot access .: No such file or directory.

[hadoop@Master ~]$ hadoop dfs -put /input in

put: File /input does not exist.

[hadoop@Master ~]$
hadoop dfs -ls

ls: Cannot access .: No such file or directory.

[hadoop@Master ~]$
hadoop dfs -mkdir in

[hadoop@Master ~]$
hadoop dfs -ls

Found 1 items

drwxr-xr-x - hadoop supergroup 0 2014-02-05 19:07 /user/hadoop/in

[hadoop@Master ~]$
hadoop dfs -put /input in

put: File /input does not exist.

[hadoop@Master ~]$
hadoop dfs -put input in

[hadoop@Master ~]$
hadoop dfs -ls

Found 1 items

drwxr-xr-x - hadoop supergroup 0 2014-02-05 19:07 /user/hadoop/in

[hadoop@Master ~]$
hadoop dfs -ls in

Found 1 items

drwxr-xr-x - hadoop supergroup 0 2014-02-05 19:07 /user/hadoop/in/input

[hadoop@Master ~]$ hadoop dfs -ls
in/input

Found 2 items

-rw-r--r-- 1 hadoop supergroup 12 2014-02-05 19:07 /user/hadoop/in/input/test1.txt

-rw-r--r-- 1 hadoop supergroup 13 2014-02-05 19:07 /user/hadoop/in/input/test2.txt

[hadoop@Master hadoop]$
hadoop jar hadoop-0.20.2-examples.jar wordcount
in/input/ out

14/02/05 19:16:10 INFO input.FileInputFormat: Total input paths to process : 2

14/02/05 19:16:10 INFO mapred.JobClient: Running job: job_201402051900_0001

14/02/05 19:16:11 INFO mapred.JobClient: map 0% reduce 0%

14/02/05 19:16:24 INFO mapred.JobClient: map 50% reduce 0%

14/02/05 19:16:30 INFO mapred.JobClient: map 100% reduce 0%

14/02/05 19:16:33 INFO mapred.JobClient: map 100% reduce 16%

14/02/05 19:16:43 INFO mapred.JobClient: map 100% reduce 100%

14/02/05 19:16:45 INFO mapred.JobClient: Job complete: job_201402051900_0001

14/02/05 19:16:45 INFO mapred.JobClient: Counters: 18

14/02/05 19:16:45 INFO mapred.JobClient: Job Counters

14/02/05 19:16:45 INFO mapred.JobClient: Launched reduce tasks=1

14/02/05 19:16:45 INFO mapred.JobClient: Rack-local map tasks=1

14/02/05 19:16:45 INFO mapred.JobClient: Launched map tasks=2

14/02/05 19:16:45 INFO mapred.JobClient: Data-local map tasks=1

14/02/05 19:16:45 INFO mapred.JobClient: FileSystemCounters

14/02/05 19:16:45 INFO mapred.JobClient: FILE_BYTES_READ=55

14/02/05 19:16:45 INFO mapred.JobClient: HDFS_BYTES_READ=25

14/02/05 19:16:45 INFO mapred.JobClient: FILE_BYTES_WRITTEN=180

14/02/05 19:16:45 INFO mapred.JobClient: HDFS_BYTES_WRITTEN=25

14/02/05 19:16:45 INFO mapred.JobClient: Map-Reduce Framework

14/02/05 19:16:45 INFO mapred.JobClient: Reduce input groups=3

14/02/05 19:16:45 INFO mapred.JobClient: Combine output records=4

14/02/05 19:16:45 INFO mapred.JobClient: Map input records=2

14/02/05 19:16:45 INFO mapred.JobClient: Reduce shuffle bytes=61

14/02/05 19:16:45 INFO mapred.JobClient: Reduce output records=3

14/02/05 19:16:45 INFO mapred.JobClient: Spilled Records=8

14/02/05 19:16:45 INFO mapred.JobClient: Map output bytes=41

14/02/05 19:16:45 INFO mapred.JobClient: Combine input records=4

14/02/05 19:16:45 INFO mapred.JobClient: Map output records=4

14/02/05 19:16:45 INFO mapred.JobClient: Reduce input records=4

[hadoop@Master hadoop]$
hadoop dfs -ls

Found 2 items

drwxr-xr-x - hadoop supergroup 0 2014-02-05 19:07 /user/hadoop/in

drwxr-xr-x - hadoop supergroup 0 2014-02-05 19:16 /user/hadoop/out

[hadoop@Master hadoop]$
hadoop dfs -ls ./out

Found 2 items

drwxr-xr-x - hadoop supergroup 0 2014-02-05 19:16 /user/hadoop/out/_logs

-rw-r--r-- 1 hadoop supergroup 25 2014-02-05 19:16 /user/hadoop/out/part-r-00000

[hadoop@Master hadoop]$
hadoop dfs -cat ./out/part-r-00000

hadoop 1

hello 2

world 1