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HDFS >> mail # user >> no namenode


Hi Mohamed,

Thanks for your suggestion, but how do we moved the ownership of our hadoop
installation from root to another user account? and can we install two
different versions of hadoop on the same machine?

Thanks.

On Wed, Jan 18, 2012 at 8:30 PM, Mohamed Elsayed <
[EMAIL PROTECTED]> wrote:

>  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 <
> [EMAIL PROTECTED]> 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 <
>> [EMAIL PROTECTED]> 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 <
>>> [EMAIL PROTECTED]> 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 <
>>>> [EMAIL PROTECTED]> 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
NEW: Monitor These Apps!
elasticsearch, apache solr, apache hbase, hadoop, redis, casssandra, amazon cloudwatch, mysql, memcached, apache kafka, apache zookeeper, apache storm, ubuntu, centOS, red hat, debian, puppet labs, java, senseiDB