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Re: configure mapreduce to work with pem files. - MapReduce - [mail # user]
...So, why it is necessary to configure ssh in Hadoop MR?  On 13 February 2013 12:58, Harsh J  wrote:     Best regards,...
   Author: Pedro Sá da Costa, 2013-02-13, 13:45
[expand - 1 more] - Re: Save configuration data in job configuration file. - MapReduce - [mail # user]
...This does not save in the xml file. I think this just keep the variable in memory.  On 19 January 2013 18:48, Arun C Murthy  wrote:     Best regards,...
   Author: Pedro Sá da Costa, 2013-01-20, 11:11
[expand - 1 more] - Re: When reduce tasks start in MapReduce Streaming? - MapReduce - [mail # user]
...So why it's called hadoop streaming, if it doesn't behave like a streaming application (The reduces don't receive data as long as it is produced by the map tasks)?   On 16 January 2013 ...
   Author: Pedro Sá da Costa, 2013-01-16, 09:04
Map tasks allocation in reduce slots? - MapReduce - [mail # user]
...MapReduce framework has map and reduce slots, that are used to track which tasks are running. When map tasks are just running, the reduce slots that the job have will be filled by map tasks?...
   Author: Pedro Sá da Costa, 2012-12-29, 13:21
Profiler in Hadoop MapReduce - MapReduce - [mail # user]
...Hi  I want to attach jprofiler to Hadoop MapReduce (MR). DO I need to configure MR to open porsts for the Jobtracker, tasktracker and map and reduce tasks to where I can attach jprofile...
   Author: Pedro Sá da Costa, 2012-12-15, 15:20
Map output files and partitions. - MapReduce - [mail # user]
...Hi,  There only 2 types of map output files, Sequence and Text files. If those files are going to be used as input to several reduce tasks, they need to be partitioned into blocks. Is t...
   Author: Pedro Sá da Costa, 2012-12-14, 07:15
Shoud I use MapReduce 0.2X, or 1.0? - MapReduce - [mail # user]
...I've noticed that Hadoop MapReduce 1.0.4 was released in 12 October 2012, and Hadoop 0.23.4 was released in 15 October 2012. I thought that with Hadoop 1.0, the Hadoop 0.2X had become discon...
   Author: Pedro Sá da Costa, 2012-10-31, 17:25
How not to clean MapReduce temp data? - MapReduce - [mail # dev]
...Hi,  Is there a parameter to avoid to clean the temporary data created during the job execution after the job end?  Best regards,...
   Author: Pedro Sá da Costa, 2012-09-27, 17:19
How map tasks know which is in the input file? - MapReduce - [mail # user]
...Hi,  1 - In JobTracker in the Hadoop Mapreduce 1.0.3, there's a new JobToken. What's the purpose of the JobToken?  2 - I also notice that the input files has now some metafiles. It...
   Author: Pedro Sá da Costa, 2012-08-15, 14:52
[expand - 1 more] - Re: submit a job in a remote jobtracker - MapReduce - [mail # user]
...But this solution implies that a user must access the remote machine before submit the job. This is not what I want. I want to submit a job in my local machine, and it will be forwarded to t...
   Author: Pedro Sá da Costa, 2012-08-14, 13:27
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