3、去d:\hadoop-2.7.2\etc\hadoop找到下面4個檔案並按如下最小配置貼上上去:
core-site.xml
<hdfs-site.xmlconfiguration
>
<
property
>
<
name
>fs.defaultfs
name
>
<
value
>hdfs://localhost:9000
value
>
property
>
configuration
>
<mapred-site.xmlconfiguration
>
<
property
>
<
name
>dfs.replication
name
>
<
value
>1
value
>
property
>
<
property
>
<
name
>dfs.namenode.name.dir
name
>
<
value
>file:/hadoop/data/dfs/namenode
value
>
property
>
<
property
>
<
name
>dfs.datanode.data.dir
name
>
<
value
>file:/hadoop/data/dfs/datanode
value
>
property
>
configuration
>
<yarn-site.xmlconfiguration
>
<
property
>
<
name
>mapreduce.framework.name
name
>
<
value
>yarn
value
>
property
>
configuration
>
<4、啟動windows命令列視窗,進入hadoop-2.7.2\bin目錄,執行下面2條命令,先格式化namenode再啟動hadoopconfiguration
>
<
property
>
<
name
>yarn.nodemanager.aux-services
name
>
<
value
>mapreduce_shuffle
value
>
property
>
<
property
>
<
name
>yarn.nodemanager.aux-services.mapreduce.shuffle.class
name
>
<
value
>org.apache.hadoop.mapred.shufflehandler
value
>
property
>
configuration
>
d:\hadoop-2.7.2\bin>hadoop namenode -format
.
.
.
d:\hadoop-2.7.2\bin>cd ..\sbin通過jps命令可以看到4個程序都拉起來了,到這裡hadoop的安裝啟動已經完事了。接著我們可以用瀏覽器到localhost:8088看mapreduce任務,到localhost:50070->utilites->browse the file system看hdfs檔案。如果重啟hadoop無需再格式化namenode,只要stop-all.cmd再start-all.cmd就可以了。d:\hadoop-2.7.2\sbin>start-all.cmd
this script is deprecated. instead use start-dfs.cmd and start-yarn.cmd
starting yarn daemons
d:\hadoop-2.7.2\sbin>jps
4944 datanode
5860 nodemanager
3532 jps
7852 namenode
7932 resourcemanager
d:\hadoop-2.7.2\sbin>
上面拉起4個程序時會彈出4個視窗,我們可以看看這4個程序啟動時都幹了啥
1.建立輸入目錄
d:\hadoop\hadoop\bin>hadoop fs -mkdir hdfs://localhost:9000/user/
d:\hadoop\hadoop\bin>hadoop fs -mkdir hdfs://localhost:9000/user/wcinput
2.上傳資料到目錄
d:\hadoop\hadoop\bin>hadoop fs -put d:\file1.txt hdfs://localhost:9000/user/wcinput
d:\hadoop\hadoop\bin>hadoop fs -put d:\file2.txt hdfs://localhost:9000/user/wcinput
3.檢視檔案
d:\hadoop\hadoop\bin
>hadoop fs -ls
hdfs://localhost:9000/user/wcinput
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