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From Steve Loughran <ste...@apache.org>
Subject Re: hadoop 0.20.2 and Ubuntu 9.04 and 9.10 problem.
Date Fri, 12 Mar 2010 10:12:03 GMT
Todd Lipcon wrote:
> Hi,
> 
> My guess is that the hosts in your cluster are low on entropy.
> 
> If you jstack the daemons as they are starting up, do you see them stuck in
> a stace trace inside SecureRandom?
> 
> -Todd


Or the machines don't know who they are and are stuck in DNS operations. 
Again a stack trace will show you where things lie

> 
> On Thu, Mar 11, 2010 at 4:07 PM, Mohammed A Hassan <mhassanb@gmu.edu> wrote:
> 
>> Hi,
>>
>> I am working on Ubuntu 9.04/9.10 and hadoop 0.20.2. Here the problem is
>> that for Pseudo Distributed and Distributed clusters, it takes undefined
>> time (1 minute to several minutes, sometimes more than 10 minutes without
>> any result) to up the live nodes.
>> It shows that the number of live nodes is zero in
>> http://localhost:50070/dfshealth.jsp for an uncertain amount of time.
>>
>> Regards
>> M. Hassan
>>
> 
> 
> 


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