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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
[MAPREDUCE-1484] Framework should not sort the input splits - MapReduce - [issue]
...Currently the framework sorts the input splits by size before the job is submitted. This makes it very difficult to run map only jobs that transform the input because the assignment of input...
http://issues.apache.org/jira/browse/MAPREDUCE-1484    Author: Owen O'Malley, 2010-03-04, 02:05
[MAPREDUCE-238] OutputFormat should be given the reduce id directly rather than a filename - MapReduce - [issue]
...The OutputFormat API should be changed to be more evolution proof:public interface OutputFormatContext {  JobConf getJobConf();  Progressable getProgress();}public interf...
http://issues.apache.org/jira/browse/MAPREDUCE-238    Author: Owen O'Malley, 2010-02-11, 06:20
Re: Strange behaviour from a custom Writable - MapReduce - [mail # user]
...On Feb 8, 2010, at 9:37 PM, Amogh Vasekar wrote:    As previously mentioned, if you are trying to sort the values, please   refer to the secondary sort example. It shows how t...
   Author: Owen O'Malley, 2010-02-09, 15:50
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