Changes between Initial Version and Version 1 of HadoopWorkshopHandsOn

Timestamp:

Nov 6, 2008, 1:46:43 PM (16 years ago)

Author:

jazz

Comment:

--

HadoopWorkshopHandsOn

@@ +1 @@
+== Hadoop Hands-on Labs (1) ==
+
+ * download hadoop-0.18.2
+{{{
+$ cd ~
+$ wget http://ftp.twaren.net/Unix/Web/apache/hadoop/core/hadoop-0.18.2/hadoop-0.18.2.tar.gz
+$ tar zxvf hadoop-0.18.2.tar.gz
+}}}
+ * 1. Hadoop 會用 SSH 進行內部連線，因此需要做 SSH Key exchange
+{{{
+~$ ssh-keygen
+~$ cp ~/.ssh/id_rsa.pub ~/.ssh/authorized_keys
+}}}
+ * 2. 需要 JAVA_HOME 環境變數才能執行 hadoop namenode
+{{{
+$ echo "export JAVA_HOME=/usr/lib/jvm/java-6-sun" >> ~/.bash_profile
+$ cd ~/hadoop-0.18.2
+}}}
+ * 3. 編輯 conf/hadoop-evn.sh (HADOOP_HOME要設定到你的hadoop安裝目錄)
+{{{
+export JAVA_HOME=/usr/lib/jvm/java-6-sun
+export HADOOP_HOME=/home/jazz/hadoop-0.18.2/
+export HADOOP_CONF_DIR=$HADOOP_HOME/conf
+}}}
+ * 4. 編輯 conf/hadoop-site.xml 在 configuration 那一段加入以下設定
+{{{
+<property>
+  <name>fs.default.name</name>
+  <value>hdfs://localhost:9000/</value>
+  <description>
+    The name of the default file system. Either the literal string
+    "local" or a host:port for NDFS.
+  </description>
+</property>
+<property>
+  <name>mapred.job.tracker</name>
+  <value>localhost:9001</value>
+  <description>
+    The host and port that the MapReduce job tracker runs at. If
+    "local", then jobs are run in-process as a single map and
+    reduce task.
+  </description>
+</property>
+
+}}}
+ * 5. 啟動hadoop 的兩道指令
+{{{
+~/hadoop-0.18.2$ bin/hadoop namenode -format
+~/hadoop-0.18.2$ bin/start-all.sh
+}}}
+ * 6. 完成後可以看到以下三個網頁
+   * http://localhost:50030/
+   * http://localhost:50060/
+   * http://localhost:50070/
+
+ * 7. 也可以放的東西上hdfs去看看
+{{{
+~/hadoop-0.18.2$ bin/hadoop dfs -put conf conf
+~/hadoop-0.18.2$ bin/hadoop dfs -ls
+Found 1 items
+drwxr-xr-x   - jazz supergroup          0 2008-11-04 15:56 /user/jazz/conf
+}}}