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[expand - 1 more] - Re: Reduce Task Priority / Scheduler - MapReduce - [mail # user]
...This makes sense until you realize:   a) It won't scale.   b) Machines fail.  On Dec 20, 2010, at 5:26 AM, Martin Becker wrote:  ote: rote: view). e:  wrote: ? ce ...
   Author: Allen Wittenauer, 2010-12-20, 19:28
Re: Passing messages - MapReduce - [mail # user]
...On Dec 19, 2010, at 10:21 AM, Eric wrote:  apReduce is designed to have independent mappers and reducers.   Yup.   lf. Say you start your jobs from a work node that has only l...
   Author: Allen Wittenauer, 2010-12-20, 00:01
Re: How to Influence Reduce Task Location. - MapReduce - [mail # user]
...On Dec 19, 2010, at 10:23 AM, Jane Chen wrote:  in nodes.  It will be desirable to schedule the reducer tasks to run on the  nodes local or close to the database nodes.  ...
   Author: Allen Wittenauer, 2010-12-19, 23:59
Re: Scheduler in Hadoop MR - MapReduce - [mail # user]
...On Dec 7, 2010, at 6:47 PM, Harsh J wrote: s   Sure you can.   Configure the task trackers to talk to specific job trackers.   This does,  however, have a very negative i...
   Author: Allen Wittenauer, 2010-12-08, 22:36
Re: Too large class path for map reduce jobs - MapReduce - [mail # user]
...On Sep 17, 2010, at 4:56 AM, Henning Blohm wrote:  rary to previous posts, my problem is not that I am missing classes on the  Task's class path (we have a perfect solution for tha...
   Author: Allen Wittenauer, 2010-09-17, 16:01
Re: hadoop.job.ugi backwards compatibility - MapReduce - [mail # dev]
...On Sep 13, 2010, at 10:05 AM, Todd Lipcon wrote:  nes  an   +1...
   Author: Allen Wittenauer, 2010-09-13, 17:30
Re: TOTAL_LAUNCHED_MAPS Counter - MapReduce - [mail # user]
...On Sep 9, 2010, at 11:42 AM, Elton Pinto wrote:  _MAPS and the "mapred.map.tasks" parameter available in the JobConf?   mapred.map.tasks is what Hadoop thinks you need at a minimum...
   Author: Allen Wittenauer, 2010-09-09, 18:56
[MAPREDUCE-1694] streaming documentation appears to be wrong on overriding settings w/-D - MapReduce - [issue]
...Throughout http://hadoop.apache.org/common/docs/current/streaming.html , there are many examples that do "hadoop jar streaming blah -Dsomething=something".  None of these examples appea...
http://issues.apache.org/jira/browse/MAPREDUCE-1694    Author: Allen Wittenauer, 2010-08-24, 21:21
[MAPREDUCE-1400] sed in build.xml fails - MapReduce - [issue]
...MAPRED version of HADOOP-6505...
http://issues.apache.org/jira/browse/MAPREDUCE-1400    Author: Allen Wittenauer, 2010-08-24, 21:20
[MAPREDUCE-1165] SerialUtils.hh: __PRETTY_FUNCTION__ is a GNU extension and not portable - MapReduce - [issue]
...SerialUtils.hh uses _PRETTY_FUNCTION_ to print the name of the function during an assertion.  That is a GNU extension and is not portable across compilers.  [C99 defines __func...
http://issues.apache.org/jira/browse/MAPREDUCE-1165    Author: Allen Wittenauer, 2010-08-24, 21:19
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