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[MAPREDUCE-157] Job History log file format is not friendly for external tools. - MapReduce - [issue]
...Currently, parsing the job history logs with external tools is very difficult because of the format. The most critical problem is that newlines aren't escaped in the strings. That makes usin...
http://issues.apache.org/jira/browse/MAPREDUCE-157    Author: Owen O'Malley, 2011-01-12, 04:45
Re: how to read map_0.out - MapReduce - [mail # user]
...The intermediate files are called IFiles. The format is trivial and you can read the code to see it. The only tricky bit is that you effectively have N IFiles concatenated together (one per ...
   Author: Owen O'Malley, 2011-01-10, 17:26
[MAPREDUCE-1515] need to pass down java5 and forrest home variables - MapReduce - [issue]
...Currently, the build script doesn't pass down the variables for java5 and forrest, so the build breaks unless they are on the command line....
http://issues.apache.org/jira/browse/MAPREDUCE-1515    Author: Owen O'Malley, 2010-12-27, 20:08
Re: Where ask questions about MapReduce source code? - MapReduce - [mail # dev]
...On Wed, Dec 22, 2010 at 3:29 PM, Pedro Costa  wrote:   Yes....
   Author: Owen O'Malley, 2010-12-23, 05:10
Re: Global Sorting and Multiple Reducers ? - MapReduce - [mail # user]
...At those data sizes, I'd make sure that you have very few maps and reduces. Look at the input format that blends multiple files together.  If you have multiple reduces, you need the tot...
   Author: Owen O'Malley, 2010-11-12, 18:15
Re: Trunk build failing with ivy errors - MapReduce - [mail # dev]
...On Wed, Nov 10, 2010 at 3:48 PM, Todd Lipcon  wrote:    I think that sounds reasonable.  ...
   Author: Owen O'Malley, 2010-11-11, 00:03
Re: Predicting how many values will I see in a call to reduce? - MapReduce - [mail # user]
...On Sun, Nov 7, 2010 at 5:38 AM, Anthony Urso  wrote:    No, there currently isn't. The framework doesn't have the information until the iterator is exhausted. The iterator is ...
   Author: Owen O'Malley, 2010-11-09, 16:28
Re: Initialize Map class - MapReduce - [mail # user]
...On Oct 17, 2010, at 11:31 AM, web service wrote:   The objects that define a MapReduce job are all configured by the   job's configuration, which is a string to string map. If your...
   Author: Owen O'Malley, 2010-10-17, 18:38
Re: hadoop.job.ugi backwards compatibility - MapReduce - [mail # dev]
...On Sep 13, 2010, at 4:23 PM, Todd Lipcon wrote:   My problem is three fold:    1. It isn't one or two spots. It is a *lot* of spots. Doing it   inconsistently would be fa...
   Author: Owen O'Malley, 2010-09-14, 14:32
Re: Adding log messages to src files, but they don't appear in logs ... - MapReduce - [mail # user]
...On Sep 7, 2010, at 9:59 AM, Rita Liu wrote:   Look at the JobTracker's webui. The task logs are available under the   details for each task.  ...
   Author: Owen O'Malley, 2010-09-07, 17:46
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