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From Mohamed Elsayed <mohammed.elsay...@bibalex.org>
Subject Re: no namenode
Date Wed, 18 Jan 2012 12:30:02 GMT
Run hadoop using Martinus account, not root account. It will work well 
with you. If there is anything wrong with you, don't hesitate to write 
it here. Thank you.

Mohamed Elsayed
Bibliotheca Alexandrina

On 01/18/2012 01:16 PM, Martinus Martinus wrote:
> Hi Mohamed,
>
> Please find attached the namenode log.
>
> Thanks.
>
> On Wed, Jan 18, 2012 at 7:02 PM, Mohamed Elsayed 
> <mohammed.elsayyed@bibalex.org <mailto:mohammed.elsayyed@bibalex.org>> 
> wrote:
>
>     Hi Martinus,
>
>     Do you think you could attach namenode's log file to find out
>     where is the problem? Thank you.
>
>     Mohamed Elsayed
>     Bibliotheca Alexandrina
>
>
>     On 01/18/2012 11:14 AM, Martinus Martinus wrote:
>>     Hi Mohamed,
>>
>>     Thanks for your explanation. I still have the same problem as
>>     before. do you have any other suggestion?
>>
>>     Thanks.
>>
>>     On Wed, Jan 18, 2012 at 4:52 PM, Mohamed Elsayed
>>     <mohammed.elsayyed@bibalex.org
>>     <mailto:mohammed.elsayyed@bibalex.org>> wrote:
>>
>>         The core is locating bin/java. If you execute ls -l
>>         /usr/lib/jvm/java-6-sun/bin, you will notice bin/java is a
>>         symbolic link to jre/bin/java. So both of them are the same.
>>         Don't worry about that.
>>
>>         Mohamed Elsayed
>>         Bibliotheca Alexandrina
>>
>>
>>         On 01/18/2012 10:25 AM, Martinus Martinus wrote:
>>>         Hi Mohamed,
>>>
>>>         Thanks for your answer. I have setup it before into
>>>         something like this :
>>>
>>>         JAVA_HOME=/usr/lib/jvm/java-6-sun
>>>
>>>         I don't know if that's should be the same or will it gave a
>>>         different result. I'll try it first.
>>>
>>>         Thanks.
>>>
>>>         On Wed, Jan 18, 2012 at 3:53 PM, Mohamed Elsayed
>>>         <mohammed.elsayyed@bibalex.org
>>>         <mailto:mohammed.elsayyed@bibalex.org>> wrote:
>>>
>>>             Hi Martinus,
>>>
>>>             As I remember, I started again from scratch and erased
>>>             everything related to hadoop in my machine. In my first
>>>             run, there was an error message (related to java)
>>>             displayed after executing bin/hadoop namenode -format.
>>>             This message didn't appear in my second run. So I
>>>             believe your problem is in this point. Keep you eyes on
>>>             what is happening after executing this command. FYI, you
>>>             must set JAVA_HOME in conf/hadoop-env.sh by doing the
>>>             following:
>>>
>>>             file `which java`
>>>             file /etc/alternatives/java
>>>             JAVA_HOME=/usr/lib/jvm/java-6-openjdk/jre
>>>
>>>             If you still can't run the example, try to set
>>>             HADOOP_CLASSPATH in conf/hadoop-env.sh to the example's
>>>             path e.g.
>>>             HADOOP_CLASSPATH=../hadoop-0.20.203.0/hadoop-examples-0.20.203.0.jar.
>>>             But this variable is not necessary to fill.
>>>
>>>             If there is any error messages appeared after executing
>>>             any command, try to fix or write them here. I will try
>>>             to help If I can.
>>>
>>>             Mohamed Elsayed
>>>             Bibliotheca Alexandrina
>>>
>>>
>>>             On 01/18/2012 04:28 AM, Martinus Martinus wrote:
>>>>             Hi Mohamed,
>>>>
>>>>             Did you found out how to handle this thing? Because
>>>>             when I run the hadoop-0.20.2-example.jar wordcount
>>>>             input output it just run, but it didn't gave any log
>>>>             message and it won't stop running.
>>>>
>>>>             Thanks.
>>>>
>>>>             On Tue, Jan 17, 2012 at 7:29 PM, Mohamed Elsayed
>>>>             <mohammed.elsayyed@bibalex.org
>>>>             <mailto:mohammed.elsayyed@bibalex.org>> wrote:
>>>>
>>>>                 Your case happened to me in the past. In first try
>>>>                 to start again from scratch and be sure that
>>>>                 everything is going well (working well e.g.
>>>>                 namenode is working and there is no java error)
>>>>                 specifically after executing bin/hadoop namenode
>>>>                 -format. If you faced any hassles, don't hesitate
>>>>                 to state them here.
>>>>
>>>>                 Mohamed Elsayed
>>>>                 Bibliotheca Alexandrina
>>>>
>>>>
>>>>                 On 01/16/2012 04:52 AM, Martinus Martinus wrote:
>>>>>                 Hi Harsh,
>>>>>
>>>>>                 I just reinstalled my master node again and it's
>>>>>                 worked right now. But when I tried to run the
>>>>>                 example using command bin/hadoop jar
>>>>>                 hadoop-0.20.2-examples.jar wordcount input output,
>>>>>                 it just waiting and didn't gave me anything and
>>>>>                 didn't stop either.
>>>>>
>>>>>                 Thanks.
>>>>>
>>>>>                 On Fri, Jan 13, 2012 at 8:22 PM, Harsh J
>>>>>                 <harsh@cloudera.com <mailto:harsh@cloudera.com>>
>>>>>                 wrote:
>>>>>
>>>>>                     What does the NameNode log in
>>>>>                     $HADOOP_HOME/logs/hadoop-*namenode*.log carry?
>>>>>
>>>>>                     On 13-Jan-2012, at 4:05 PM, Martinus Martinus
>>>>>                     wrote:
>>>>>
>>>>>                     > Hi,
>>>>>                     >
>>>>>                     > I start-all.sh my hadoop master node, but I
>>>>>                     can't find any namenode on it. Would anyone be
>>>>>                     so kindly to tell me how to fix this problem?
>>>>>                     >
>>>>>                     > Thanks.
>>>>>
>>>>>
>>>>
>>>
>>
>

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