hadoop 2.x安装：安装结果测试

[grid2@tiny1 ~]$ ## 创建两个文件
[grid2@tiny1 ~]$ cd ~
[grid2@tiny1 ~]$ mkdir input
[grid2@tiny1 ~]$ cd input
[grid2@tiny1 input]$ echo "hello world" >test1.txt
[grid2@tiny1 input]$ echo "hello hadoop" >test2.txt
[grid2@tiny1 input]$ cat test1.txt
hello world
[grid2@tiny1 input]$ cat test2.txt
hello hadoop

[grid2@tiny1 input]$ ## 将这两个文件拷贝至HDFS
[grid2@tiny1 ~]$ hadoop/hadoop-2.7.2/bin/hadoop fs -ls /
[grid2@tiny1 ~]$ hadoop/hadoop-2.7.2/bin/hadoop fs -put ~/input /in
[grid2@tiny1 ~]$ hadoop/hadoop-2.7.2/bin/hadoop fs -ls /
Found 1 items
drwxr-xr-x   - grid2 supergroup          0 2017-03-13 05:24 /in
[grid2@tiny1 ~]$ hadoop/hadoop-2.7.2/bin/hadoop fs -ls /in/*
Found 2 items
-rw-r--r--   1 grid supergroup         12 2017-06-21 20:28 /in/test1.txt
-rw-r--r--   1 grid supergroup         13 2017-06-21 20:28 /in/test2.txt

[grid2@tiny1 ~]$ ## 运行MapReduce
[grid2@tiny1 ~]$ hadoop/hadoop-2.7.2/bin/hadoop jar hadoop/hadoop-2.7.2/share/hadoop/mapreduce/hadoop-mapreduce-examples-2.7.2.jar wordcount /in /out
17/03/13 05:54:10 INFO client.RMProxy: Connecting to ResourceManager at tiny1/192.168.132.101:8032
17/03/13 05:54:16 INFO input.FileInputFormat: Total input paths to process : 2
17/03/13 05:54:16 INFO mapreduce.JobSubmitter: number of splits:2
17/03/13 05:54:17 INFO mapreduce.JobSubmitter: Submitting tokens for job: job_1489354711598_0002
17/03/13 05:54:17 INFO impl.YarnClientImpl: Submitted application application_1489354711598_0002
17/03/13 05:54:18 INFO mapreduce.Job: The url to track the job: http://tiny1:8088/proxy/application_1489354711598_0002/ 17/03/13 05:54:18 INFO mapreduce.Job: Running job: job_1489354711598_0002
17/03/13 05:54:34 INFO mapreduce.Job: Job job_1489354711598_0002 running in uber mode : false
17/03/13 05:54:34 INFO mapreduce.Job:  map 0% reduce 0%
17/03/13 05:55:55 INFO mapreduce.Job:  map 100% reduce 0%
17/03/13 05:56:46 INFO mapreduce.Job:  map 100% reduce 100%
17/03/13 05:56:49 INFO mapreduce.Job: Job job_1489354711598_0002 completed successfully
17/03/13 05:56:49 INFO mapreduce.Job: Counters: 49
File System Counters
FILE: Number of bytes read=55
FILE: Number of bytes written=353368
FILE: Number of read operations=0
FILE: Number of large read operations=0
FILE: Number of write operations=0
HDFS: Number of bytes read=215
HDFS: Number of bytes written=25
HDFS: Number of read operations=9
HDFS: Number of large read operations=0
HDFS: Number of write operations=2
Job Counters
Launched map tasks=2
Launched reduce tasks=1
Data-local map tasks=2
Total time spent by all maps in occupied slots (ms)=176701
Total time spent by all reduces in occupied slots (ms)=32951
Total time spent by all map tasks (ms)=176701
Total time spent by all reduce tasks (ms)=32951
Total vcore-milliseconds taken by all map tasks=176701
Total vcore-milliseconds taken by all reduce tasks=32951
Total megabyte-milliseconds taken by all map tasks=180941824
Total megabyte-milliseconds taken by all reduce tasks=33741824
Map-Reduce Framework
Map input records=2
Map output records=4
Map output bytes=41
Map output materialized bytes=61
Input split bytes=190
Combine input records=4
Combine output records=4
Reduce input groups=3
Reduce shuffle bytes=61
Reduce input records=4
Reduce output records=3
Spilled Records=8
Shuffled Maps =2
Failed Shuffles=0
Merged Map outputs=2
GC time elapsed (ms)=4814
CPU time spent (ms)=5120
Physical memory (bytes) snapshot=324501504
Virtual memory (bytes) snapshot=6172119040
Total committed heap usage (bytes)=253939712
Shuffle Errors
BAD_ID=0
CONNECTION=0
IO_ERROR=0
WRONG_LENGTH=0
WRONG_MAP=0
WRONG_REDUCE=0
File Input Format Counters
Bytes Read=25
File Output Format Counters
Bytes Written=25

[grid2@tiny1 ~]$ ## 查看输出结果
[grid2@tiny1 ~]$ hadoop/hadoop-2.7.2/bin/hadoop fs -ls /
Found 3 items
drwxr-xr-x   - grid2 supergroup          0 2017-03-13 05:51 /in
drwxr-xr-x   - grid2 supergroup          0 2017-03-13 05:56 /out
drwx------   - grid2 supergroup          0 2017-03-13 05:54 /tmp
[grid2@tiny1 ~]$ hadoop/hadoop-2.7.2/bin/hadoop fs -ls /out/*
-rw-r--r--   1 grid2 supergroup          0 2017-03-13 05:56 /out/_SUCCESS
-rw-r--r--   1 grid2 supergroup         25 2017-03-13 05:56 /out/part-r-00000
[grid2@tiny1 ~]$ hadoop/hadoop-2.7.2/bin/hadoop fs -cat /out/part-r-00000
hadoop  1
hello   2
world   1