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Date: Fri, 11 Feb 2011 11:30:53 +0800
Message-ID: <AANLkTin_Vdkd7t-q4thLXc__43xuEuePyHdGBTTe3KkV@mail.gmail.com>
Subject: Re: How do I insert a new node while running a MapReduce hadoop?
From: li ping <li.j2ee@gmail.com>
To: common-user@hadoop.apache.org
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of course you can.
What is the node type, datanode?job tracker?task tracker?
Let's say you are trying to add a datanode.
You can modify the xml file let the datanode pointed to the NameNode,
JobTracker, TaskTracker.

<property>
         <name>fs.default.name</name>
         <value>hdfs://xxxx:9000/</value>
     </property>

<property>
  <name>mapred.job.tracker</name>
  <value>ip:port</value>
  <description>The host and port that the MapReduce job tracker runs
  at.  If "local", then jobs are run in-process as a single map
  and reduce task.
  </description>
</property>

In most cases, the tasktracker and datanode are running on the same machine
(to get the best performance).

After doing this, you can start the hdfs by command start-dfs.sh
On Fri, Feb 11, 2011 at 11:13 AM, Sandro Simas <sandro.csimas@gmail.com>wro=
te:

> Hi, i started using hadoop now and I'm doing some tests on a cluster of
> three
> machines. I wanted to insert a new node after the MapReduce started, is
> this
> possible? How do I?
>



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