Mafish Liu wrote:
>
> On Mon, Mar 10, 2008 at 9:47 AM, Mafish Liu <[EMAIL PROTECTED]> wrote:
>
>> You should do the following steps:
>> 1. Have hadoop deployed on the new node with the same directory structure
>> and configuration.
>> 2. Just run $HADOOP_HOME/bin/hadoop datanode and jobtracker.
>
> Addition: do not run "bin/hadoop namenode -format" before you run
> datanode,
> or you will get a error like "Incompatible namespaceIDs ..."
>
>>
>>
>> Datanode and jobtracker will contact to namenode specified in hadoop
>> configuration file automatically and finish adding new node to the hadoop
>> cluster.
>>
>>
>> On Mon, Mar 10, 2008 at 4:56 AM, Aaron Kimball <[EMAIL PROTECTED]>
>> wrote:
>>
>> > Yes. You should have the same hadoop-site across all your slaves. They
>> > will need to know the DNS name for the namenode and jobtracker.
>> >
>> > - Aaron
>> >
>> > tjohn wrote:
>> > >
>> > > Mahadev Konar wrote:
>> > >
>> > >> I believe (as far as I remember) you should be able to add the node
>> > by
>> > >> bringing up the datanode or tasktracker on the remote machine. The
>> > >> Namenode or the jobtracker (I think) does not check for the nodes in
>> > the
>> > >> slaves file. The slaves file is just to start up all the daemon's by
>> > >> ssshing to all the nodes in the slaves file during startup. So you
>> > >> should just be able to startup the datanode pointing to correct
>> > namenode
>> > >> and it should work.
>> > >>
>> > >> Regards
>> > >> Mahadev
>> > >>
>> > >>
>> > >>
>> > >
>> > > Sorry for my ignorance... To make a datanode/tasktraker point to the
>> > > namenode what should i do? Have i to edit the hadoop-site.xml? Thanks
>> > >
>> > > John
>> > >
>> > >
>> >
>>
>>
>>
>> --
>> [EMAIL PROTECTED]
>> Institute of Computing Technology, Chinese Academy of Sciences, Beijing.
>>
>
>
>
> --
> [EMAIL PROTECTED]
> Institute of Computing Technology, Chinese Academy of Sciences, Beijing.
>
>
Thanks a lot guys! It worked fine and it was exactly what i was looking for.
Best wishes,
John.
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