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Re: Using NFS mounted volume for Hadoop installation/configuration - Hadoop - [mail # user]
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...I'm also maintaining an experimental Hadoop cluster, and I need to modify the Hadoop source code and test it, so just use NFS to deploy the latest version of code, no problem fo...
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Author: Nan Zhu,
2013-02-18, 18:14
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Re: what will happen when HDFS restarts but with some dead nodes - Hadoop - [mail # user]
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...I think Chen is asking replication lost, so, according to Harsh's reply, in safe mode, NN will know all blocks which has less replications than 3(by default setup) but no less t...
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Author: Nan Zhu,
2013-01-30, 16:45
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Re: what will happen when HDFS restarts but with some dead nodes - Hadoop - [mail # user]
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...So, we can assume that all blocks are fully replicated at the start point of HDFS? Best, Nan Zhu School of Computer Science, McGill University On Tuesday, 29 Januar...
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Author: Nan Zhu,
2013-01-30, 03:53
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回复： unsubscribe - Hadoop - [mail # user]
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...joking? you send wrong unsubscribing request by replying an email about how to co rrectly unsubscribe this mail list? Nan Zhu 已使用 Sparrow (http://www.sparrowmailapp.com/?sig ) ...
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Author: Nan Zhu,
2012-08-09, 06:02
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Re: what does "keep 10% map, 40% reduce" mean in gridmix2's README? - Hadoop - [mail # user]
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...yes, what's the relationship between them? On Mon, Jun 25, 2012 at 2:50 PM, gemini alex wrote: Nan Zhu School of Electronic, Information and Electrical Engineering,229 Sh...
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Author: Nan Zhu,
2012-06-25, 09:45
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Re: what does "keep 10% map, 40% reduce" mean in gridmix2's README? - Hadoop - [mail # user]
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...Hi, Chen, Thank you for your reply, but in its README, there is no value which is larger than 100%, it means that the size of intermediate results will never be larger than input...
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Author: Nan Zhu,
2012-06-14, 16:42
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what does "keep 10% map, 40% reduce" mean in gridmix2's README? - Hadoop - [mail # user]
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...Hi, all I'm using gridmix2 to test my cluster, while in its README file, there are statements like the following: +1) Three stage map/reduce job + Input: &n...
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Author: Nan Zhu,
2012-06-14, 06:58
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Re: How Jobtrakcer stores Tasktrackers Information - Hadoop - [mail # user]
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...I'm not sure what's the exact meaning of the tasktracker information you mentioned there is a "TaskTrackerStatus" class, and when the system runs, tt jt transmits serialized objects of...
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Author: Nan Zhu,
2011-11-30, 13:36
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failed to compile 0.20.3 - Hadoop - [mail # user]
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...Hi, all I met a problem when compling the hadoop-0.20.3 I modified some codes in JobTracker, and then compile it, the eclipse tells me that /Users/zhunan/codes/hadoop-0.20....
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Author: Nan Zhu,
2011-09-29, 00:09
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Re: phases of Hadoop Jobs - Hadoop - [mail # user]
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...Hi, Arun , Thanks! As you explained, in the hadoop, we cannot explicitly divide job as two phase, map and reduce, but only for reduce task, we can judge which stage it's in...
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Author: Nan Zhu,
2011-09-19, 05:01
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