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Re: Hadoop Meetup in Sept in Shanghai - Hadoop - [mail # user]
...Hi,  I'm interested in it, any more details?  Best,  Nan  On Wed, Aug 17, 2011 at 7:42 AM, Michael Lv  wrote:    Nan Zhu School of Electronic, Information ...
   Author: Nan Zhu, 2011-08-17, 01:18
How Hadoop is deployed - Hadoop - [mail # general]
...Hi, all  My question is that how hadoop system is deployed in your data centers?   the Hadoop workload is always memory-intensive, and sometimes, it occupies large proportion of ne...
   Author: Nan Zhu, 2011-07-31, 04:52
Re: nomenclature - Hadoop - [mail # user]
...For MapReduce, I always call them "JobTracker" and "TaskTracker", for HDFS, "Namenode" and "DataNode"  because of the name of classes in source code???:-)  Nan  On Mon, Jun 13...
   Author: Nan Zhu, 2011-06-13, 00:28
[expand - 1 more] - Re: How HDFS decides where to put the block - Hadoop - [mail # dev]
...Yes, that's it  Thanks  Nan  On Mon, Apr 18, 2011 at 10:16 PM, Harsh J  wrote:     Nan Zhu School of Software,5501 Shanghai Jiao Tong University 800,Dongchuan R...
   Author: Nan Zhu, 2011-04-18, 15:15
[expand - 1 more] - Re: Re: how to get each task's process - Hadoop - [mail # user]
...Oh,  I missed that..shy.....  TaskRunner is extended from thread, I think Thread.currendThread().getName() may be the answer  But I have a impression on that the java api cann...
   Author: Nan Zhu, 2011-03-29, 15:55
Re: modification to Hadoop Jobtracker - Hadoop - [mail # dev]
...Hi, bikash  I also worked on this several months ago,  If I don't have a wrong memory, the involved files should be: JobTracker.java, TaskTracker.java,  the most interesting f...
   Author: Nan Zhu, 2011-03-18, 18:12
[expand - 2 more] - Re: Question about Hadoop Default FCFS Job Scheduler - Hadoop - [mail # user]
...OK, I got your point,  you mean why don't we put the for loop into obtainNewLocalMapTask(),  yes, I think we can do that, but the result is the same with current codes, and I don't...
   Author: Nan Zhu, 2011-01-17, 16:46
Why Hadoop uses HTTP for file transmission between Map and Reduce? - Hadoop - [mail # user]
...Hi, all  I have a question about the file transmission between Map and Reduce stage, in current implementation, the Reducers get the results generated by Mappers through HTTP Get, I don...
   Author: Nan Zhu, 2011-01-13, 08:27
[expand - 1 more] - Re: How to simulate network delay on 1 node - Hadoop - [mail # user]
...If you're studying how the hadoop make the copies of the blocks, I'm not familiar with HDFS, so I have no idea about it  If you're studying the data transfer between the Map and Reduce,...
   Author: Nan Zhu, 2010-12-26, 13:07
gridmix2 gives an classnotfound error? - Hadoop - [mail # user]
...Hi, all  I'm attempting to invoke the gridmix2 benchmark on hadoop-0.20.2, I have modify the environment variables in the scripts accordingly, but after I typed "sh rungridmix_2" , the ...
   Author: Nan Zhu, 2010-11-08, 22:01
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