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Re: limit of values in reduce phase? - MapReduce - [mail # user]
...On Jun 21, 2010, at 5:14 PM, Torsten Curdt wrote:   There is no assumption that all of the values fit into memory. The   iterator is really the result of a merge sort from disk and...
   Author: Owen O'Malley, 2010-06-22, 05:47
Re: custom Configuration values - MapReduce - [mail # user]
...On Fri, Jun 11, 2010 at 8:17 AM, Torsten Curdt  wrote:  https://issues.apache.org/jira/browse/MAPREDUCE-1456  I guess I'll do that patch next week. *smile*  ...
   Author: Owen O'Malley, 2010-06-11, 15:35
Re: [RT] map reduce "pipelines" - MapReduce - [mail # dev]
...At Yahoo, we had a framework that was similar to MapReduce called Dreadnaught. When we were converting applications off of Dreadnaught to Hadoop MapReduce, we considered supporting M-R-R. (D...
   Author: Owen O'Malley, 2010-06-09, 18:50
Re: InputSplits in Mapper - MapReduce - [mail # user]
...On Jun 5, 2010, at 11:15 AM, Torsten Curdt wrote:   No, there isn't an api for that. The data is actually available in   HDFS, but it is considered an internal format and in partic...
   Author: Owen O'Malley, 2010-06-05, 19:04
Re: almost sorted map output - MapReduce - [mail # user]
...On Fri, May 28, 2010 at 10:58 PM, juber patel  wrote:  The map output sort is efficient for mostly sorted output. The dominant cost is the transfer costs of the shuffle and that wo...
   Author: Owen O'Malley, 2010-06-01, 03:11
[MAPREDUCE-1786] Add method to support pre-partitioned data - MapReduce - [issue]
...There are some applications where the map wants to partition the data itself. This happens in Pipes, if the user has a C++ partitioner. It would make sense to support it in streaming too. Th...
http://issues.apache.org/jira/browse/MAPREDUCE-1786    Author: Owen O'Malley, 2010-05-13, 03:34
Re: Un-deprecate the old MapReduce API? - MapReduce - [mail # dev]
...On the various pieces, I think:  0.20: -0 for removing the deprecation, +1 for improving the deprecation message with links to the corresponding class.  0.21: new core api should b...
   Author: Owen O'Malley, 2010-04-22, 13:55
[MAPREDUCE-1274] The completed job web ui urls include full path names to the local file system on the JobTracker. - MapReduce - [issue]
...Currently, the web ui for MapReduce in 0.21.0-dev include a path to a local file in the url:http://jt.foo.com:50030/jobdetailshistory.jsp?jobid=job_200912012129_0001&logFile=file%3A%2Fop...
http://issues.apache.org/jira/browse/MAPREDUCE-1274    Author: Owen O'Malley, 2010-04-21, 17:56
Re: Reflective instantiation of Mappers and Reducers - MapReduce - [mail # user]
...On Apr 2, 2010, at 12:05 PM, Kris Nuttycombe wrote:   Currently the best you can do is to make your Mapper or Reduce   implement Configurable and use the values out of the configur...
   Author: Owen O'Malley, 2010-04-02, 21:10
[MAPREDUCE-1669] The imported JSON credentials should support binary secrets. - MapReduce - [issue]
...Currently, we support adding a file with secrets to a job. It can either be in binary or JSON, but the JSON format assumes that all of the secrets are UTF-8, which is often false. We should ...
http://issues.apache.org/jira/browse/MAPREDUCE-1669    Author: Owen O'Malley, 2010-04-02, 17:46
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