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Re: Who creates job.jar? - MapReduce - [mail # user]
...Pedro,    job.jar is a name given by the Map/Reduce framework to any jar that is submitted with the map, reduce and other user classes. So, in your case the examples.jar is submitt...
   Author: Hemanth Yamijala, 2010-06-25, 10:32
Re: Custom File reader - MapReduce - [mail # user]
...Steven,   I can .  Could you look at JobConf.setInputFormat() API to set your input format ?  Thanks Hemanth...
   Author: Hemanth Yamijala, 2010-06-25, 04:43
Re: How many ports and processes are open/created in MR? - MapReduce - [mail # user]
...Pedro,   There are 2 daemons that are launched when the MapReduce framework starts - JobTracker and TaskTracker. Every map or reduce task runs in a separate process called Child (you co...
   Author: Hemanth Yamijala, 2010-06-24, 02:00
Re: hadoop tasktracker - MapReduce - [mail # user]
...Pedro,  ow  Did you actually notice this happening ? Also, can you give some information about the cluster where you're running into this problem - like is it a single node / pseud...
   Author: Hemanth Yamijala, 2010-06-10, 08:00
Re: Speculative Execution and Streaming - MapReduce - [mail # user]
...Greg,   I am wondering if you are hitting https://issues.apache.org/jira/browse/MAPREDUCE-1073.  In M/R pipes jobs, the map task progress moves to 100% as soon as the input is read...
   Author: Hemanth Yamijala, 2010-05-28, 09:57
Re: Incorrect dates on job tracker history - MapReduce - [mail # user]
...James,  ur he  This has been the behavior of the History viewer for long that it shows the timestamp when the JobTracker restarted rather than Job start time. There has been lot of...
   Author: Hemanth Yamijala, 2010-05-18, 01:44
Re: Number of map tasks spawned - MapReduce - [mail # user]
...On Sun, Apr 25, 2010 at 4:28 PM, Praveen Sripati  wrote:  The former....
   Author: Hemanth Yamijala, 2010-04-27, 12:01
Re: Question about jobtracker metrics - MapReduce - [mail # user]
...On Tue, Apr 27, 2010 at 12:43 AM, Harold Lim  wrote:  maps_launched and reduces_launched are metrics that are incremented every time a map / reduce task is picked by the scheduler ...
   Author: Hemanth Yamijala, 2010-04-27, 11:38
[MAPREDUCE-1575] TestStreamingAsDifferentUser.testStreamingWithDistCache tries to set permissions for a non-existent file. - MapReduce - [issue]
...TestStreamingAsDifferentUser.testStreamingWithDistCache, in an effort to mock public distributed cache files, sets up world executable permissions on the parent directory of a public cache f...
http://issues.apache.org/jira/browse/MAPREDUCE-1575    Author: Hemanth Yamijala, 2010-03-08, 18:52
[MAPREDUCE-828] Provide a mechanism to pause the jobtracker - MapReduce - [issue]
...We've seen scenarios when we have needed to stop the namenode for a maintenance activity. In such scenarios, if the jobtracker (JT) continues to run, jobs would fail due to initialization or...
http://issues.apache.org/jira/browse/MAPREDUCE-828    Author: Hemanth Yamijala, 2010-02-23, 18:18
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