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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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Re: What to do/check/debug/root cause analysis when jobtracker hang - MapReduce - [mail # user]
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...I wish it is the case. i have another prod. cluster using cdh3u4 too, but it won't happen. On Wed, Feb 6, 2013 at 6:12 PM, java8964 java8964 wrote:...
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Author: Patai Sangbutsarakum,
2013-02-07, 04:23
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What to do/check/debug/root cause analysis when jobtracker hang - MapReduce - [mail # user]
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...Lately, jobtracker in one of our production cluster fall into hang state. The load 5,10,15min is like 1 ish; with top command, jobtracker has 100% cpu all the time. So, i went ahead to...
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Author: Patai Sangbutsarakum,
2013-02-04, 23:21
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Re: Sub-queues in capacity scheduler - MapReduce - [mail # user]
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...Thanks Harsh, I guess there would be no back port on this as because of differences of MR2 and 1. Regards, P On Thu, Jan 10, 2013 at 10:17 PM, Harsh J wrote:...
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Author: Patai Sangbutsarakum,
2013-01-11, 19:28
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Re: balancer and under replication - MapReduce - [mail # user]
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...Thanks Harsh, you're the first, as usual. Currently, there are 291 active nodes spread in 11 racks. We have rack-awareness enable for a year (work like a champ). I ran fsck throughout...
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Author: Patai Sangbutsarakum,
2013-01-07, 22:25
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balancer and under replication - MapReduce - [mail # user]
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...Hello Hadoopers, Currently my production cluster which is running cdh3u4 has shown Number of Under-Replicated Blocks around 1k blocks. Even though we have balancer run every night some...
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Author: Patai Sangbutsarakum,
2013-01-07, 20:48
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Re: Is it necessary to run secondary namenode when starting HDFS? - MapReduce - [mail # user]
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...I would say it's not necessary. I did skip it when I first played with Hadoop. From: Ivan Ryndin > Reply-To: > Date: Mon, 17 Dec 2012 21:04:49 +0400 To: > Subject: Is it neces...
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Author: Patai Sangbutsarakum,
2012-12-17, 18:52
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jobtracker page @50030 timeout or take very long time. - MapReduce - [mail # user]
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...I have a check monitoring the page jobtracker:50030/jobtracker.jsp, and the check shows timeout (180 sec) pretty often. Once I jump and browse to the page it actually take me from 5 sec to 5...
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Author: Patai Sangbutsarakum,
2012-11-01, 20:47
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i am about to scrape a page - MapReduce - [mail # user]
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...I finding a way to retrieve info about what jobs are running by what user, and on what pool(s); i am on cdh3u4 with fair scheduler. I do know that jobtracker_host:50030/scheduler is &...
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Author: Patai Sangbutsarakum,
2012-10-18, 21:47
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Re: Fair scheduler. - MapReduce - [mail # user]
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...Harsh.. i am testing it again according to your last instruction. tml#Configuring+the+Environment+of+the+Hadoop+Daemons I couldn't find "mapred.job.queues" from that link so i have be...
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Author: Patai Sangbutsarakum,
2012-10-17, 17:40
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