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Re: Hadoop/Lucene + Solr architecture suggestions? - MapReduce - [mail # user]
...The problem is finding the documents in the search cluster. Making the indexes in the reducer means the final m/r pass has to segregate the documents according to the distribution function. ...
   Author: Lance Norskog, 2012-10-12, 05:20
Re: Using a hard drive instead of - MapReduce - [mail # user]
...This is why memory-mapped files were invented.  On Thu, Oct 11, 2012 at 9:34 PM, Gaurav Sharma  wrote:    Lance Norskog [EMAIL PROTECTED]...
   Author: Lance Norskog, 2012-10-12, 05:01
Re: Legal Matter - MapReduce - [mail # user]
...Even worse, "Talk Like A Ninja" day is both racist and oddly ineffective.     | From: "Russell Jurney"  | To: [EMAIL PROTECTED] | Sent: Thursday, September 6, 2012 6:09:28 AM ...
   Author: Lance Norskog, 2012-09-08, 00:59
Re: Collecting MAP output in a Iterator - MapReduce - [mail # user]
...The reducer has to open MAP2 explicitly. If it is a regular file, it has to be in distributed cache.  On Mon, Aug 20, 2012 at 12:56 PM, Siddharth Tiwari  wrote: d of    L...
   Author: Lance Norskog, 2012-08-20, 20:24
Re: Can Hadoop replace the use of MQ b/w processes? - MapReduce - [mail # user]
...Cool. I'm on the sidelines of a project trying to use Oozie in a large Hadoop-ecology app. Oozie is the one thing marked 'to be replaced'.  On Sun, Aug 19, 2012 at 6:31 PM, Russell Jurn...
   Author: Lance Norskog, 2012-08-20, 01:57
Re: Hadoop's dependency on Linux - MapReduce - [mail # user]
...But none of these explain the problem.  You need a program called 'chmod' in your execution path.  It doesn't actually need to be chmod.  On Fri, Apr 13, 2012 at 2:44 AM, Than...
   Author: Lance Norskog, 2012-04-14, 22:53
Re: Starting Map Reduce Job on EC2 - MapReduce - [mail # user]
...Can you open all of the monitoring browser ports?  On Sun, Jan 15, 2012 at 3:03 PM, Something Something  wrote: s it safe to cious d  M/R job - ied 0 - ied 1 - ied 2   I a &nb...
   Author: Lance Norskog, 2012-01-16, 01:00
Re: Gratuitous use of CHMOD in windows - MapReduce - [mail # user]
...This is the only problem with running Hadoop on Windows without Cygwin.  Also, you might be able to install the 'core' package of 'gnuwin32' and add the chmod.exe there to your path. &n...
   Author: Lance Norskog, 2011-11-23, 04:35
Re: How to Create an effective chained MapReduce program. - MapReduce - [mail # user]
...You might find it more easy to understand this if you use one of the low-level job-scripting languages like Oozie or Hamake. They put the whole assemblage of stuff into one file.  On We...
   Author: Lance Norskog, 2011-09-07, 22:52
Re: Extending ArrayWritable, Using Combiner and Spill Failed error - MapReduce - [mail # user]
...Combiners are supposed to emit exactly what they receive. Hadoop should look at what the combiner spits out and blow up.  On Thu, Aug 18, 2011 at 9:32 PM, Harsh J  wrote:  wro...
   Author: Lance Norskog, 2011-08-19, 05:03
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