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Re: Suggestions for swapping issue - Hadoop - [mail # user]
...How is it that 36 processes are not expected if you have configured 48 + 12 = 50 slots available on the machine?  On Wed, May 11, 2011 at 11:11 AM, Adi  wrote:  ...
   Author: Ted Dunning, 2011-05-11, 18:16
Re: HDFS - MapReduce coupling - Hadoop - [mail # user]
...Yes.  There is quite a bit of need for the local file system in clustered mode.  For one think, all of the shuffle intermediate files are on local disk.  For another, the dist...
   Author: Ted Dunning, 2011-05-02, 06:56
Re: Applications creates bigger output than input? - Hadoop - [mail # user]
...Cooccurrence analysis is commonly used in recommendations.  These produce large intermediates.  Come on over to the Mahout project if you would like to talk to a bunch of people wh...
   Author: Ted Dunning, 2011-04-30, 20:32
Re: Serving Media Streaming - Hadoop - [mail # user]
...Check out S4 http://s4.io/  On Fri, Apr 29, 2011 at 10:13 PM, Luiz Fernando Figueiredo  wrote:  ...
   Author: Ted Dunning, 2011-04-30, 20:31
Re: questions about hadoop map reduce and compute intensive related applications - Hadoop - [mail # general]
...On Sat, Apr 30, 2011 at 12:18 AM, elton sky  wrote:   Not quite sure what algorithms you mean here, but for trivial parallelism, map-reduce is a fine way to go.  MPI supports ...
   Author: Ted Dunning, 2011-04-30, 20:30
Re: providing the same input to more than one Map task - Hadoop - [mail # user]
...I would recommend taking this question to the Mahout mailing list.  The short answer is that matrix multiplication by a column vector is pretty easy.  Each mapper reads the vector ...
   Author: Ted Dunning, 2011-04-23, 01:33
[expand - 1 more] - Re: Estimating Time required to compute M/Rjob - Hadoop - [mail # user]
...Turing completion isn't the central question here, really.  The truth is, map-reduce programs have considerably pressure to be written in a scalable fashion which limits them to fairly ...
   Author: Ted Dunning, 2011-04-18, 00:07
[expand - 1 more] - Re: Using global reverse lookup tables - Hadoop - [mail # user]
...On Fri, Apr 15, 2011 at 11:45 AM, W.P. McNeill  wrote:   likely to be much better.  One helpful tweak would be to put a Bloom filter in front of the MapFile to avoid probing i...
   Author: Ted Dunning, 2011-04-15, 21:43
Re: Dynamic Data Sets - Hadoop - [mail # user]
...Hbase is very good at this kind of thing.  Depending on your aggregation needs OpenTSDB might be interesting since they store and query against large amounts of time ordered data simila...
   Author: Ted Dunning, 2011-04-14, 03:12
[expand - 6 more] - Re: Memory mapped resources - Hadoop - [mail # user]
...Benson is actually a pretty sophisticated guy who knows a lot about mmap.  I engaged with him yesterday on this since I know him from Apache.  On Tue, Apr 12, 2011 at 7:16 PM, M. C...
   Author: Ted Dunning, 2011-04-13, 04:09
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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