| 2 | = 動態加入datanode 與 tasktracker = |
| 3 | |
| 4 | * 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 |
| 5 | |
| 6 | {{{ |
| 7 | $ bin/hadoop-daemon.sh --config ./conf start datanode |
| 8 | |
| 9 | starting datanode, logging to /tmp/hadoop/logs/hadoop-waue-datanode-Dx7200.out |
| 10 | }}} |
| 11 | |
| 12 | {{{ |
| 13 | $ bin/hadoop-daemon.sh --config ./conf start tasktracker |
| 14 | |
| 15 | starting tasktracker, logging to /tmp/hadoop/logs/hadoop-waue-tasktracker-Dx7200.out |
| 16 | }}} |
| 17 | |
| 18 | ----- |
| 19 | = balancer = |
| 20 | 用於分析數據塊分佈和重新平衡!DataNode上的數據分佈 |
| 21 | |
| 22 | {{{ |
| 23 | $ bin/hadoop balancer |
| 24 | |
| 25 | Time Stamp Iteration# Bytes Already Moved Bytes Left To Move Bytes Being Moved |
| 26 | 09/04/01 18:00:08 INFO net.NetworkTopology: Adding a new node: /default-rack/140.110.138.191:50010 |
| 27 | 09/04/01 18:00:08 INFO net.NetworkTopology: Adding a new node: /default-rack/140.110.141.129:50010 |
| 28 | 09/04/01 18:00:08 INFO dfs.Balancer: 0 over utilized nodes: |
| 29 | 09/04/01 18:00:08 INFO dfs.Balancer: 0 under utilized nodes: |
| 30 | The cluster is balanced. Exiting... |
| 31 | Balancing took 186.0 milliseconds |
| 32 | }}} |