So I edited /etc/hosts with the ugly
127.0.0.1 <FQDN> <hostname> And nodes now decommission. This is horrible from adding a node perspective. We want to quickly add a box, upload the same image, turn it on, add it to slaves file and refreshNodes(rebalance if wanted) and be done with it. We don't want to have to edit the /etc/hosts every time. Is there any way around this? (I mean it would be awesome if the DataNode was given the hostname from the master node start-dfs.sh command(ie. The sshexec basically would pass the parameter from the slaves file to avoid even needing /etc/hosts). Any ideas as the docs said 127.0.0.1 localhost should be fine?????? Anyone else decommissioning nodes and not having this issue? Dean From: Hiller, Dean (Contractor) Sent: Monday, January 03, 2011 6:03 PM To: 'hdfs-user@hadoop.apache.org' Subject: decommision nodes not working(localhost vs. ips in website too) Luckily I am in dev so not a biggie, but datanode seems to be reading from /etc/hosts(ie. Java calls to InetAddress.getLocalHost return 127.0.0.1 instead of the ip) when displaying the name of the live nodes. When displaying the name fo the dead nodes however, it displays the hostname in my slaves and excluded file. I wonder why the hadoop script doesn't pass the FQDN from the slaves file to the slave node upon start so there is no lookup of /etc/hosts AND they could then bind to the correct FQDN as well if it wanted to I guess. Anyways, my dead node shows up in my live nodes list(as localhost which it's not but with correct ip) and is not going to a decommissioned state. Is there any way to solve this? I read my /etc/hosts file is supposed to be 127.0.0.1 localhost localhost.localdomain but to get the hostname to display correctly, I need something more like 127.0.0.1 <FQDN> <hostname> instead as then I know it would display properly there....and I may even have to change the 127.0.0.1 to <ip> as InetAddress.getLocalHost returns whatever is in /etc/hosts on any linux system I have ever been on (ubuntu, centos at least). Any way to fix this??? thanks, Dean This message and any attachments are intended only for the use of the addressee and may contain information that is privileged and confidential. If the reader of the message is not the intended recipient or an authorized representative of the intended recipient, you are hereby notified that any dissemination of this communication is strictly prohibited. If you have received this communication in error, please notify us immediately by e-mail and delete the message and any attachments from your system.
