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[expand - 1 more] - Re: Decommissioning Individual Disks - Hadoop - [mail # user]
...I think that would be a bit too rude.  The datanode scans the data partition when it comes up.  Better to give it the benefit of a bounce so that it can inform the name node of the...
   Author: Ted Dunning, 2009-09-11, 03:37
Re: HDFS and Linux File System - Hadoop - [mail # user]
...Since hadoop still doesn't have append and small files kill performance, it is difficult to avoid local disk or memory buffering.  On Mon, Sep 7, 2009 at 2:18 AM, Ted Yu  wrote: &n...
   Author: Ted Dunning, 2009-09-07, 16:42
[expand - 2 more] - Re: Pregel - Hadoop - [mail # user]
...Are there any production applications that use Hama?  On Thu, Sep 3, 2009 at 7:07 PM, Edward J. Yoon wrote:     Ted Dunning, CTO DeepDyve...
   Author: Ted Dunning, 2009-09-04, 06:19
[expand - 1 more] - Re: Intra-datanode balancing? - Hadoop - [mail # user]
...It used to matter quite a lot.  On Tue, Aug 25, 2009 at 1:25 PM, Kris Jirapinyo wrote:  ...
   Author: Ted Dunning, 2009-08-25, 20:36
Re: NN memory consumption on 0.20/0.21 with compressed pointers/ - Hadoop - [mail # user]
...On Tue, Aug 25, 2009 at 2:57 AM, Steve Loughran  wrote:    Since the codes running on these machines tend to be matrix oriented Fortran, I would expect almost all of this is a...
   Author: Ted Dunning, 2009-08-25, 15:59
Re: File Chunk to Map Thread Association - Hadoop - [mail # user]
...Uhh.... hadoop already goes to considerable lengths to make sure that computation is local.  In my experience it is common for 90% of the map invocations to be working from local data. ...
   Author: Ted Dunning, 2009-08-20, 17:36
[expand - 2 more] - Re: How to deal with "too many fetch failures"? - Hadoop - [mail # user]
...I think that the problem that I am remembering was due to poor recovery from this problem.  The underlying fault is likely due to poor connectivity between your machines.  Test tha...
   Author: Ted Dunning, 2009-08-20, 06:25
Re: Ubuntu/Hadoop incompatibilities? - Hadoop - [mail # user]
...I use ubuntu both in-house and on EC2 for hadoop.  Zero problems once you have the real java.  On Mon, Aug 17, 2009 at 10:34 AM, Jakob Homan  wrote:  ...
   Author: Ted Dunning, 2009-08-17, 17:46
Re: Why the jobs are suspended when I add new nodes? - Hadoop - [mail # user]
...Have you looked at the logs?  On Sun, Aug 16, 2009 at 11:36 PM, yang song  wrote:  ...
   Author: Ted Dunning, 2009-08-17, 08:00
Re: How to re-read the config files - Hadoop - [mail # user]
...You can do a rolling restart of the nodes.  The customer won't notice and running programs will still complete in good order.  If you have rack awareness configured, you can restar...
   Author: Ted Dunning, 2009-08-13, 22:21
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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