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From TianYi Zhu <tianyi....@facilitatedigital.com>
Subject Re: Why cannot I start namenode or localhost:50070 ?
Date Mon, 27 Aug 2012 07:16:22 GMT
Hi Charles,

map/reduce(jobtracker/tasktrackers, localhost:50030) is based on
hdfs(namenode/datanodes, localhost:50070) or local file system.
It seems there is something wrong with the hdfs, so the map/reduce is
blocked and shows INITIALIZING, please check the log of namenode(
/usr/local/hadoop/hadoop/bin/../logs/hadoop-hadoop-namenode-west-desktop.out
).


On Mon, Aug 27, 2012 at 5:03 PM, Charles AI <hadoop90@gmail.com> wrote:

> Hi All,
> I was running a cluster of one master and 4 slaves. I copied the
> hadoop_install folder from the master to all 4 slaves, and configured them
> well.
> How ever when i sh start-all.sh from the master machine. It shows below:
>
> starting namenode, logging to
> /usr/local/hadoop/hadoop/bin/../logs/hadoop-hadoop-namenode-west-desktop.out
> slave2: ssh: connect to host slave2 port 22: Connection refused
> master: starting datanode, logging to
> /usr/local/hadoop/hadoop/bin/../logs/hadoop-hadoop-datanode-west-desktop.out
> slave4: starting datanode, logging to
> /usr/local/hadoop/hadoop/bin/../logs/hadoop-hadoop-datanode-hadoop12.out
> slave3: starting datanode, logging to
> /usr/local/hadoop/hadoop/bin/../logs/hadoop-hadoop-datanode-hadoop-desktop.out
> slave1: starting datanode, logging to
> /usr/local/hadoop/hadoop/bin/../logs/hadoop-hadoop-datanode-kong-desktop.out
> master: starting secondarynamenode, logging to
> /usr/local/hadoop/hadoop/bin/../logs/hadoop-hadoop-secondarynamenode-west-desktop.out
> starting jobtracker, logging to
> /usr/local/hadoop/hadoop/bin/../logs/hadoop-hadoop-jobtracker-west-desktop.out
> slave2: ssh: connect to host slave2 port 22: Connection refused
> slave4: starting tasktracker, logging to
> /usr/local/hadoop/hadoop/bin/../logs/hadoop-hadoop-tasktracker-hadoop12.out
> master: starting tasktracker, logging to
> /usr/local/hadoop/hadoop/bin/../logs/hadoop-hadoop-tasktracker-west-desktop.out
> slave3: starting tasktracker, logging to
> /usr/local/hadoop/hadoop/bin/../logs/hadoop-hadoop-tasktracker-hadoop-desktop.out
> slave1: starting tasktracker, logging to
> /usr/local/hadoop/hadoop/bin/../logs/hadoop-hadoop-tasktracker-kong-desktop.out
>
> I know that slave2 is not on. But that should not be the problem. After
> this , I typed 'jps' in the master's shell, and it shows:
> 6907 Jps
> 6306 DataNode
> 6838 TaskTracker
> 6612 JobTracker
> 6533 SecondaryNameNode
>
> And when I opened this link "localhost:50030",the page said :
> master Hadoop Map/Reduce Administration
>  Quick Links <http://master:50030/jobtracker.jsp#quicklinks>
> *State:* INITIALIZING
> *Started:* Mon Aug 27 14:54:46 CST 2012
> *Version:* 0.20.2, r911707
> *Compiled:* Fri Feb 19 08:07:34 UTC 2010 by chrisdo
> *Identifier:* 201208271454
>
> I don't quite get what the "State : INITIALIZING" means. Additionally, i
> cannot open "localhost:50070".
>
> So, Any suggestions ?
>
> Thanks in advance.
> CH
> --
> in a hadoop learning cycle
>

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