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POHow to find the proper ports to be used in core and mapred files during the Hadoop installation on mac OSX?
 

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  1. POHow to find the proper ports to be used in core and mapred files during the Hadoop installation on mac OSX?
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    <p>I recently shifted from Windows to Mac OS, and I am trying to install Hadoop on Mac OSX 10.7 Lion.</p> <p>In the <code>core-site.xml</code> file, I have to add a property:</p> <pre><code>&lt;property&gt; &lt;name&gt;fs.default.name&lt;/name&gt; &lt;value&gt;hdfs://localhost:8020&lt;/value&gt; &lt;/property&gt; </code></pre> <p>and in <code>mapred-site.xml</code>:</p> <pre><code>&lt;property&gt; &lt;name&gt;mapred.job.tracker&lt;/name&gt; &lt;value&gt;localhost:8021&lt;/value&gt; &lt;/property&gt; </code></pre> <p>I tried to do:</p> <pre><code>$telnet localhost 8020 </code></pre> <p>and</p> <pre><code>$telnet localhost 8021 </code></pre> <p>but I think both of them are not open on my machine.</p> <p><code>telnet localhost</code> is working fine but <code>telnet localhost 8020/8021</code> is throwing the error:</p> <pre><code>Trying ::1... telnet: connect to address ::1: Connection refused Trying 127.0.0.1... telnet: connect to address 127.0.0.1: Connection refused Trying fe80::1%lo0... telnet: connect to address fe80::1%lo0: Connection refused telnet: Unable to connect to remote host: Connection refused </code></pre> <p>Also, I am not able to telnet to my machine's IP address. I get this error:</p> <pre><code>Trying 192.168.0.145... telnet: connect to address 192.168.0.145: Operation timed out telnet: Unable to connect to remote host: Operation timed out </code></pre> <p>To find the ports available, I tried running command:</p> <pre><code>$lsof -i -P | grep -i "listen" </code></pre> <p>but every time I run this command, I'll get different set of IPV6 ports.</p> <p>I am not sure how to find the proper ports to specify in those two files? Please suggest some pointers on this.</p> <p>I ran the start-all.sh script and type <strong>jps</strong>, it's not showing the namenode pid</p> <p>'3049 SecondaryNameNode 3181 TaskTracker 2971 DataNode 3190 Jps 3105 JobTracker'</p>
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