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heartbeat and timeout question - MapReduce - [mail # user]
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...Hello Hadoopers, I am going to migrate production racks of datanodes/tasktrackers into new core switches. Rack awareness is in place for long time. I am looking for the way to mitigate recop...
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Author: Patai Sangbutsarakum,
2013-05-22, 00:47
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Re: Slaves file - MapReduce - [mail # user]
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...Thanks much, the cluster is on cdh3u4; i do confirm I see the diff from the JIRA in slave.sh On May 16, 2013, at 12:42 PM, Chris Nauroth > wrote: Hello Patai, &nb...
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Author: Patai Sangbutsarakum,
2013-05-16, 20:58
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Slaves file - MapReduce - [mail # user]
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...Quick easy question. Can we put # in front of the host name in slave file, and hope that nn and jtk will consider it comment out? Thanks -p...
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Author: Patai Sangbutsarakum,
2013-05-16, 18:56
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Re: Hardware Selection for Hadoop - MapReduce - [mail # user]
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...I really doubt if he would spend $ to by 10 cores on a die CPU for "proof of concept" machines. Actually, I even think of telling you to gathering old machines (but reliable) as much as you ...
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Author: Patai Sangbutsarakum,
2013-05-06, 22:57
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good way to measure and confirm. - MapReduce - [mail # user]
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...Good morning Hadoopers! I am finding the way to prove that our cluster has cpu bound but not io bound. Diamond + Graphite is in place and been collected for months. I believe the CPU i...
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Author: Patai Sangbutsarakum,
2013-03-07, 18:51
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Re: map stucks at 99.99% - MapReduce - [mail # user]
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...Xeon 3.07GHz, 24 cores CPU 143.2% MEM 1.7% So, it is not mem dried up on her, cpu is pretty pecked. It finally just finished after hours, it double on time used toda...
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Author: Patai Sangbutsarakum,
2013-02-28, 21:28
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Re: map stucks at 99.99% - MapReduce - [mail # user]
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...- Check the box on which the task is running, is it under heavy load ? Is there high amount of I/O wait ? CPU, very warm load average: 47.47, 48.56, 49.00 I/O, chill on io 0.1x % on iowait, ...
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Author: Patai Sangbutsarakum,
2013-02-28, 21:04
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map stucks at 99.99% - MapReduce - [mail # user]
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...Hadoopers!! Need input from you guys, i am looking at a critical job in production. it stucks at 99.99% in map phrase for much longer than it used to be.. what to do to debug wha...
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Author: Patai Sangbutsarakum,
2013-02-28, 20:06
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Re: xcievers - MapReduce - [mail # user]
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...Thanks George On Thu, Feb 7, 2013 at 4:07 PM, George Datskos wrote:...
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Author: Patai Sangbutsarakum,
2013-02-08, 18:57
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xcievers - MapReduce - [mail # user]
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...Hello Hadoopers, How's your cluster behave today ?? hope they run well and strong. In the past or some bad days i saw 'Too many fetch-failure'; it was fixed by adjusting dfs.data...
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Author: Patai Sangbutsarakum,
2013-02-07, 19:32
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