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Posted to common-user@hadoop.apache.org by "asmaa.atef" <sw...@hotmail.com> on 2009/10/08 11:01:34 UTC

hadoop startup problem

hello everyone,
i have a problem in hadoop startup ,every time i try to start hadoop name
node doesnot start and when i tried to stop name node ,it gives an error :no
name node to start.
i tried to format the name node and it works well ,but now i have data in
hadoop and formatting name node will erase all data.
what can i do?
thanks in advance,
asmaa
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Re: hadoop startup problem

Posted by "V@ni" <va...@gmail.com>.
Hi, I had this issue, later found out that a folder everytime after executing 
has to be cleared, i'm not sure which folder in Hadoop has to be cleared. 



asmaa.atef wrote:
> 
> hello everyone,
> i have a problem in hadoop startup ,every time i try to start hadoop name
> node doesnot start and when i tried to stop name node ,it gives an error
> :no name node to start.
> i tried to format the name node and it works well ,but now i have data in
> hadoop and formatting name node will erase all data.
> what can i do?
> thanks in advance,
> asmaa
> 

-- 
View this message in context: http://old.nabble.com/hadoop-startup-problem-tp25800609p32240939.html
Sent from the Hadoop core-user mailing list archive at Nabble.com.


Re: hadoop startup problem

Posted by "V@ni" <va...@gmail.com>.
Hi, I had this issue, later found out that a folder everytime after executing 
has to be cleared, i'm not sure which folder in Hadoop has to be cleared. 



asmaa.atef wrote:
> 
> hello everyone,
> i have a problem in hadoop startup ,every time i try to start hadoop name
> node doesnot start and when i tried to stop name node ,it gives an error
> :no name node to start.
> i tried to format the name node and it works well ,but now i have data in
> hadoop and formatting name node will erase all data.
> what can i do?
> thanks in advance,
> asmaa
> 

-- 
View this message in context: http://old.nabble.com/hadoop-startup-problem-tp25800609p32240938.html
Sent from the Hadoop core-user mailing list archive at Nabble.com.


Re: hadoop startup problem

Posted by David Howell <de...@gmail.com>.
It sounds like the name node is crashing on startup. What kind of
errors are there in the name node log?

On Thu, Oct 8, 2009 at 4:01 AM, asmaa.atef <sw...@hotmail.com> wrote:
>
> hello everyone,
> i have a problem in hadoop startup ,every time i try to start hadoop name
> node doesnot start and when i tried to stop name node ,it gives an error :no
> name node to start.
> i tried to format the name node and it works well ,but now i have data in
> hadoop and formatting name node will erase all data.
> what can i do?
> thanks in advance,
> asmaa
> --
> View this message in context: http://www.nabble.com/hadoop-startup-problem-tp25800609p25800609.html
> Sent from the Hadoop core-user mailing list archive at Nabble.com.
>
>