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From "yingnan.ma" <yingnan...@ipinyou.com>
Subject about rebalance
Date Wed, 30 May 2012 01:36:46 GMT


I add 5 new datanode and I want to do the rebalance, and I started the rebalance on the namenode,
and it gave me the notice that 

"starting balancer, logging to /hadoop/logs/hadoop-hdfs-balancer-hadoop220.out "

and today I check the log file and the detail is that 

Another balancer is running. Exiting...
Balancing took 5.0203 minutes

1) I am not sure that whether I should start the rebalance on the namenode or on each new
2) should I set the bandwidth on each datanode or just only on the namenode
3) If the rebalance started, whether the data on others' would be decreased

4)whether the log details means the balancer was killed by another one.

If you have some suggestion, please give me some notice , thank you

Best Regards


E    yingnan.ma@ipinyou.com
MSN:  mayingnan_blue@hotmail.com
QQ: 230624226
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