Re: Eclipse plugin

[Arijit Mukherjee <ar...@gmail.com>]

Hi All

I've having some trouble in using the eclipse plugin on a windows XP machine
to connect to the HDFS (hadoop 0.19.0) on a linux server - I'm getting the
error:null message, although the port number etc are correct. Can this be
related to the user information? I've set it to the hadoop user on the linux
server, but the advanced parameters still carry the name of the user on the
windows machine. I've edited them manually - but nothing changes.

Can you connect to a remote HDFS from eclipse on a client machine?

A related question - can you comunicate between two HDFS instances using the
hdfs:// url or by any other means?

Regards
Arijit


2009/2/27 Iman <ie...@cs.uwaterloo.ca>

> Hi John,
> When I created the hadoop location, the hadoop.job.ugi did not appear in
> the advanced parameter. But when I later edited it, it was there. I donnu
> how that was fixed:)
> Also to get it to work, I had to edit the fs.default.name and
> mapred.job.tracker in  hadoop/conf/hadoop-site.xml
> I added these lines:
> <property>
>   <name>fs.default.name</name>
>   <value>hdfs://<ip_address>:9000</value>
>  </property>
>  <property>
>   <name>mapred.job.tracker</name>
>   <value><ip_address>:9001</value>
>  </property>
>  <property>
>   <name>dfs.replication</name>
>   <value>1</value>
>  </property>
>
> Finally, I decided to install hadoop locally on my machine instead of using
> the hadoop virtual machine.
> Iman.
>
>
> John Livingstone wrote:
>
>> Iman-4,
>> I have encountered the same problem that you have encountered: Not being
>> able to access HDFS on my Hadoop VMware Linux server (uning the Hadoop
>> Yahoo
>> tutorial) and not seeing "hadoop.job.ugi" in my Eclipse Europa 3.3.2 list
>> of
>> parameters.  What did you have to do or change to get it to work?
>> Thanks,
>> John L.
>>
>>
>>
>>
>> Iman-4 wrote:
>>
>>
>>> Thank you so much, Norbert. It worked.
>>> Iman
>>> Norbert Burger wrote:
>>>
>>>
>>>> Are running Eclipse on Windows?  If so, be aware that you need to spawn
>>>> Eclipse from within Cygwin in order to access HDFS.  It seems that the
>>>> plugin uses "whoami" to get info about the active user.  This thread has
>>>> some more info:
>>>>
>>>>
>>>> http://mail-archives.apache.org/mod_mbox/hadoop-core-user/200807.mbox/%3C487CD747.8050503@signal7.de%3E
>>>>
>>>> Norbert
>>>>
>>>> On 2/12/09, Iman <ie...@cs.uwaterloo.ca> wrote:
>>>>
>>>>
>>>>> Hi,
>>>>> I am using VM image hadoop-appliance-0.18.0.vmx and an eclipse plug-in
>>>>> of
>>>>> hadoop. I have followed all the steps in this tutorial:
>>>>> http://public.yahoo.com/gogate/hadoop-tutorial/html/module3.html. My
>>>>> problem is that I am not able to browse the HDFS. It only shows an
>>>>> entry
>>>>> "Error:null". Upload files to DFS, and Create new directory fail. Any
>>>>> suggestions? I have tried to chang all the directories in the hadoop
>>>>> location advanced parameters to "/tmp/hadoop-user", but it did not
>>>>> work.
>>>>> Also, the tutorials mentioned a parameter "hadoop.job.ugi" that needs
>>>>> to
>>>>> be
>>>>> changed, but I could not find it in the list of parameters.
>>>>> Thanks
>>>>> Iman
>>>>>
>>>>>
>>>>>
>>>>
>>>>
>>>
>>>
>>>
>>
>>
>>
>
>


-- 
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There is still a light that shines on me,
Shine on until tomorrow, let it be."