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Re: Why my tests shows Yarn is worse than MRv1 for terasort? - MapReduce - [mail # user]
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...Hey Sam, Did you get a chance to retry with Sandy's suggestions? The config appears to be asking NMs to use roughly 22 total containers (as opposed to 12 total tasks in MR1 config) due...
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Author: Harsh J,
2013-06-08, 15:09
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Re: Why/When partitioner is used. - MapReduce - [mail # user]
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...Why not also ask yourself, what if you do not send all keys to the same reducer? Would you get the results you desire that way? :) On Fri, Jun 7, 2013 at 4:47 PM, Sai Sai wrote: ...
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Author: Harsh J,
2013-06-07, 16:26
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Re: ClassNotFound Error when use hdfs namenode -format in 2.0.4 - MapReduce - [mail # user]
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...Do not use HADOOP_HOME anymore. Try removing the below line (and any other references in your env to HADOOP_HOME): export HADOOP_HOME="/hadoop-2.0.4-alpha" On Thu, Jun 6, 2013 at...
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Author: Harsh J,
2013-06-06, 02:22
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Re: Hadoop JARs and Eclipse - MapReduce - [mail # user]
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...Hi John, On Thu, Jun 6, 2013 at 1:21 AM, John Lilley wrote: dependencies are also available there), or a custom defined repository if you lack internet access. If yo...
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Author: Harsh J,
2013-06-06, 02:18
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[MAPREDUCE-5288] ResourceEstimator#getEstimatedTotalMapOutputSize suffers from divide by zero issues - MapReduce - [issue]
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...The computation in the above mentioned class-method is below: long estimate = Math.round(((double)inputSize * completedMapsOu...
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http://issues.apache.org/jira/browse/MAPREDUCE-5288
Author: Harsh J,
2013-06-05, 20:41
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Re: Docs 404 - MapReduce - [mail # user]
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...Thanks for reporting this Uri. Where do you see this linked, so we may fix it? The new page is at http://hadoop.apache.org/docs/current/hadoop-project-dist/hadoop-hdfs/HdfsUserGuide.html &nb...
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Author: Harsh J,
2013-06-05, 06:01
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Re: is time sync required among all nodes? - MapReduce - [mail # user]
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...Skew in time between nodes is highly confusing, even if not a problem to the runtime. I'd strongly recommend running a time sync service for operational sanity. On Wed, Jun 5, 2013 at ...
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Author: Harsh J,
2013-06-05, 05:59
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Re: Types and SequenceFiles - MapReduce - [mail # user]
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...Ah, sorry I didn't read the exact problem. Yes that static call you make to addInputPath goes all the way up to (inheritance!) FileInputFormat.addInputPath, which just adds input paths...
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Author: Harsh J,
2013-05-31, 16:10
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Re: MapReduce on Local FileSystem - MapReduce - [mail # user]
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...Then why not simply run with Write Replication Factor set to 1? On Fri, May 31, 2013 at 12:54 PM, Agarwal, Nikhil wrote: Harsh J...
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Author: Harsh J,
2013-05-31, 07:25
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Re: Types and SequenceFiles - MapReduce - [mail # user]
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...Hi Jens, Please read this old thread at http://search-hadoop.com/m/WHvZDCfVsD which covers the issue, the solution and more. On Fri, May 31, 2013 at 1:39 AM, Jens Scheidtmann &nb...
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Author: Harsh J,
2013-05-31, 03:17
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