Changes between Version 1 and Version 2 of 0428Hadoop_Lab4

Timestamp:

Apr 26, 2009, 1:53:30 AM (15 years ago)

Author:

waue

Comment:

--

0428Hadoop_Lab4

@@ -1 +1 @@
 
+= 動態加入datanode 與 tasktracker = 
+
+ * 是否能連到正確的namenode取決於conf/hadoop-site.xml，目前測試結果與conf/slave、masters無關
+
+{{{
+$ bin/hadoop-daemon.sh --config ./conf start datanode
+
+starting datanode, logging to /tmp/hadoop/logs/hadoop-waue-datanode-Dx7200.out
+}}}
+
+{{{
+$ bin/hadoop-daemon.sh --config ./conf start tasktracker
+
+starting tasktracker, logging to /tmp/hadoop/logs/hadoop-waue-tasktracker-Dx7200.out
+}}}
+
+-----
+= balancer  =
+用於分析數據塊分佈和重新平衡!DataNode上的數據分佈
+
+{{{
+$ bin/hadoop balancer
+
+Time Stamp               Iteration#  Bytes Already Moved  Bytes Left To Move  Bytes Being Moved
+09/04/01 18:00:08 INFO net.NetworkTopology: Adding a new node: /default-rack/140.110.138.191:50010
+09/04/01 18:00:08 INFO net.NetworkTopology: Adding a new node: /default-rack/140.110.141.129:50010
+09/04/01 18:00:08 INFO dfs.Balancer: 0 over utilized nodes:
+09/04/01 18:00:08 INFO dfs.Balancer: 0 under utilized nodes: 
+The cluster is balanced. Exiting...
+Balancing took 186.0 milliseconds
+}}}