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Re: Please help with hadoop configuration parameter set and get - Hadoop - [mail # user]
...Statics won't work the way you might think because different mappers and different reducers are all running in different JVM's.  It might work in local mode, but don't kid yourself abou...
   Author: Ted Dunning, 2010-12-17, 17:32
Re: InputFormat for a big file - Hadoop - [mail # user]
...a) this is a small file by hadoop standards.  You should be able to process it by conventional methods on a single machine in about the same time it takes to start a hadoop job that doe...
   Author: Ted Dunning, 2010-12-17, 17:30
Re: Needs a simple answer - Hadoop - [mail # user]
...Maha,  Remember that the mapper is not running on the same machine as the main class.  Thus local files aren't where you think.  On Thu, Dec 16, 2010 at 1:06 PM, maha  wr...
   Author: Ted Dunning, 2010-12-16, 22:49
[expand - 1 more] - Re: Slow final few reducers - Hadoop - [mail # user]
...The job history program tells you this.  The syntax is hideous, but there is a parser provided.  On Sat, Dec 11, 2010 at 8:23 AM, Mithila Nagendra  wrote:  ...
   Author: Ted Dunning, 2010-12-11, 18:10
[expand - 3 more] - Re: Is it possible to write file output in Map phase once and write another file output in Reduce phase? - Hadoop - [mail # user]
...Of course.  It is just a set of Hadoop programs.  2010/12/11 edward choi  ...
   Author: Ted Dunning, 2010-12-11, 18:00
[expand - 2 more] - Re: Announcing KeptCollections, distributed Java Collections for ZooKeeper - Hadoop - [mail # general]
...It definitely can go that way.  But some things are pretty nicely viewed that way.  For instance, wouldn't it be nice to have a "live processes" set in different programs?  Of...
   Author: Ted Dunning, 2010-12-09, 23:22
[expand - 2 more] - Re: java.lang.OutOfMemoryError: GC overhead limit exceeded - Hadoop - [mail # user]
...If there are combiners, the reducers shouldn't get any lists longer than a small multiple of the number of maps.  On Sun, Sep 26, 2010 at 6:01 PM, Bradford Stephens  wrote:  ...
   Author: Ted Dunning, 2010-09-27, 02:00
Re: how to transfer the parameter from a reduce to another iteration of mapred - Hadoop - [mail # user]
...1.  Attachments don't work with this mailing list.  2.  Use a combiner to combine your sums and counts into bigger sums and counts  3.  The reducer should take a lis...
   Author: Ted Dunning, 2009-10-11, 21:39
Re: Parallel data stream processing - Hadoop - [mail # user]
...On Fri, Oct 9, 2009 at 11:02 PM, Ricky Ho  wrote:  m  Current implementations are definitely batch oriented.  Keep reading, though.     Abolutely.   t &nbs...
   Author: Ted Dunning, 2009-10-10, 08:01
Re: Hey Cloudera can you help us In beating Google Yahoo Facebook? - Hadoop - [mail # dev]
...On Fri, Oct 2, 2009 at 4:02 PM, Smith Stan  wrote:   What do you mean beat Yahoo, Google and Facebook?   Is it true that Google uses hadoop?  Yes.  Mostly for educat...
   Author: Ted Dunning, 2009-10-02, 23:36
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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