That's good. :) > Will this cause bigger problems later on? or should I just ignore it.
I'm not sure, But I guess there is no problem. Does anyone have some experience with that? Regards, Edward J. Yoon On Wed, Jul 23, 2008 at 11:05 PM, Jose Vidal <[EMAIL PROTECTED]> wrote: > Thanks! that worked. I was able to run dfs and put some files in it. > > However, when I go to my namenode at http://namenode:50070 I see that > all the datanodes have a name of "localhost". > > Will this cause bigger problems later on? or should I just ignore it. > > Jose > > On Tue, Jul 22, 2008 at 6:48 PM, Edward J. Yoon <[EMAIL PROTECTED]> wrote: >>> So, do I need to change the host file in all the slaves, or just the >>> namenode? >> >> Just the namenode. >> >> Thanks, Edward >> >> On Wed, Jul 23, 2008 at 7:45 AM, Jose Vidal <[EMAIL PROTECTED]> wrote: >>> Yes, the host file just has: >>> >>> 127.0.0.1 localhost hermes.cse.sc.edu hermes >>> >>> So, do I need to change the host file in all the slaves, or just the >>> namenode? >>> >>> I'm not root on these machines so changing these requires gentle >>> handling of our sysadmin.... >>> >>> Jose >>> >>> On Tue, Jul 22, 2008 at 5:37 PM, Edward J. Yoon <[EMAIL PROTECTED]> wrote: >>>> If you have a static address for the machine, make sure that your >>>> hosts file is pointing to the static address for the namenode host >>>> name as opposed to the 127.0.0.1 address. It should look something >>>> like this with the values replaced with your values. >>>> >>>> 127.0.0.1 localhost.localdomain localhost >>>> 192.x.x.x yourhost.yourdomain.com yourhost >>>> >>>> - Edward >>>> >>>> On Wed, Jul 23, 2008 at 6:03 AM, Jose Vidal <[EMAIL PROTECTED]> wrote: >>>>> I'm trying to install hadoop on our linux machine but after >>>>> start-all.sh none of the slaves can connect: >>>>> >>>>> 2008-07-22 16:35:27,534 INFO org.apache.hadoop.dfs.DataNode: STARTUP_MSG: >>>>> /************************************************************ >>>>> STARTUP_MSG: Starting DataNode >>>>> STARTUP_MSG: host = thetis/127.0.0.1 >>>>> STARTUP_MSG: args = [] >>>>> STARTUP_MSG: version = 0.16.4 >>>>> STARTUP_MSG: build = >>>>> http://svn.apache.org/repos/asf/hadoop/core/branches/bran >>>>> ch-0.16 -r 652614; compiled by 'hadoopqa' on Fri May 2 00:18:12 UTC 2008 >>>>> ************************************************************/ >>>>> 2008-07-22 16:35:27,643 WARN org.apache.hadoop.dfs.DataNode: Invalid >>>>> directory i >>>>> n dfs.data.dir: directory is not writable: /work >>>>> 2008-07-22 16:35:27,699 INFO org.apache.hadoop.ipc.Client: Retrying >>>>> connect to s >>>>> erver: hermes.cse.sc.edu/129.252.130.148:9000. Already tried 1 time(s). >>>>> 2008-07-22 16:35:28,700 INFO org.apache.hadoop.ipc.Client: Retrying >>>>> connect to s >>>>> erver: hermes.cse.sc.edu/129.252.130.148:9000. Already tried 2 time(s). >>>>> 2008-07-22 16:35:29,700 INFO org.apache.hadoop.ipc.Client: Retrying >>>>> connect to s >>>>> erver: hermes.cse.sc.edu/129.252.130.148:9000. Already tried 3 time(s). >>>>> 2008-07-22 16:35:30,701 INFO org.apache.hadoop.ipc.Client: Retrying >>>>> connect to s >>>>> erver: hermes.cse.sc.edu/129.252.130.148:9000. Already tried 4 time(s). >>>>> 2008-07-22 16:35:31,702 INFO org.apache.hadoop.ipc.Client: Retrying >>>>> connect to s >>>>> erver: hermes.cse.sc.edu/129.252.130.148:9000. Already tried 5 time(s). >>>>> 2008-07-22 16:35:32,702 INFO org.apache.hadoop.ipc.Client: Retrying >>>>> connect to s >>>>> erver: hermes.cse.sc.edu/129.252.130.148:9000. Already tried 6 time(s). >>>>> >>>>> same for the tasktrackers (port 9001). >>>>> >>>>> I think the problem has something to do with name resolution. Check these >>>>> out: >>>>> >>>>> [EMAIL PROTECTED]:~/hadoop-0.16.4> telnet hermes.cse.sc.edu 9000 >>>>> Trying 127.0.0.1... >>>>> Connected to hermes.cse.sc.edu (127.0.0.1). >>>>> Escape character is '^]'. >>>>> bye >>>>> Connection closed by foreign host. >>>>> >>>>> [EMAIL PROTECTED]:~/hadoop-0.16.4> host hermes.cse.sc.edu >>>>> hermes.cse.sc.edu has address 129.252.130.148 >>>>> >>>>> [EMAIL PROTECTED]:~/hadoop-0.16.4> telnet 129.252.130.148 9000 >>>>> Trying 129.252.130.148... >>>>> telnet: connect to address 129.252.130.148: Connection refused >>>>> telnet: Unable to connect to remote host: Connection refused >>>>> >>>>> So, the first one connects but not the second one, but they both go to >>>>> the same machine:port. My guess is that the hadoop server is closing >>>>> the connection, but why? >>>>> >>>>> Thanks, >>>>> Jose >>>>> >>>>> -- >>>>> Jose M. Vidal <[EMAIL PROTECTED]> http://jmvidal.cse.sc.edu >>>>> University of South Carolina http://www.multiagent.com >>>>> >>>> >>>> >>>> >>>> -- >>>> Best regards, >>>> Edward J. Yoon, >>>> http://blog.udanax.org >>>> >>> >>> >>> >>> -- >>> Jose M. Vidal <[EMAIL PROTECTED]> http://jmvidal.cse.sc.edu >>> University of South Carolina http://www.multiagent.com >>> >> >> >> >> -- >> Best regards, Edward J. Yoon >> [EMAIL PROTECTED] >> http://blog.udanax.org >> > > > > -- > Jose M. Vidal <[EMAIL PROTECTED]> http://jmvidal.cse.sc.edu > University of South Carolina http://www.multiagent.com > -- Best regards, Edward J. Yoon [EMAIL PROTECTED] http://blog.udanax.org
