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Re: Need info on mapred.child.java.opts, mapred.map.child.java.opts and mapred.reduce.child.java.opts - MapReduce - [mail # user]
...Thanks for replying Harsh.  So, it means that in my case of configuration, *mapred.child.java.opts  -Xmx1g* will be avoided completely and *mapred.map.child.java.opts  -Xmx2g*...
   Author: Gaurav Dasgupta, 2013-03-08, 11:22
Re: How to add users in supergroup? - MapReduce - [mail # user]
...OK. Thanks a lot. Understood now.  On Thu, Feb 14, 2013 at 10:25 PM, Chris Embree  wrote:  ...
   Author: Gaurav Dasgupta, 2013-02-15, 05:20
Cannot browse job.xml while running the job - MapReduce - [mail # user]
...Hi users,  I have a 11 node Hadoop cluster. I am facing a strange situation while trying to view the job.xml of a running job. In the JobTracker Web UI, while a job is running, if I cli...
   Author: Gaurav Dasgupta, 2012-09-06, 16:44
Re: Pi Estimator failing to print output after finishing the job sucessfully - MapReduce - [mail # user]
...Thanks Jeff. I tried with 100 Maps and 10 Billion samples per map. And it worked fine.  On Tue, Sep 4, 2012 at 10:06 PM, Michael Segel wrote:  ...
   Author: Gaurav Dasgupta, 2012-09-05, 08:52
Re: TestDFSIO info required - MapReduce - [mail # user]
...Hi All,  The formula is actually: *Throughput = (size*1000) / (time*MEGA)* *                               &nb...
   Author: Gaurav Dasgupta, 2012-08-30, 10:56
Re: MRBench Maps strange behaviour - MapReduce - [mail # user]
...Hi Hemanth,  Thanks for the reply. Can you tell me how can I calculate or ensure from the counters what should be the exact number of Maps? Thanks, Gaurav Dasgupta On Wed, Aug 29, 2012 ...
   Author: Gaurav Dasgupta, 2012-08-29, 07:44
How MRBench works? - MapReduce - [mail # user]
...Hi All,  I want to run "MRBench" benchmark to test the performance of my Hadoop cluster. The command with parameters which I am submitting is: *hadoop jar $HADOOP_HOME/hadoop-test.jar m...
   Author: Gaurav Dasgupta, 2012-08-29, 07:41
Re: How to reduce total shuffle time - MapReduce - [mail # user]
...Hi,  Thanks for your replies. I will try working on recommended suggestions and provide feedback.  Abhi,  In the JobTracker Web UI -> Job Tracker History, go to the specifi...
   Author: Gaurav Dasgupta, 2012-08-29, 04:33
Suggestions/Info required regarding Hadoop Benchmarking - MapReduce - [mail # user]
...Hi Users,  I have a 12 node CDH3 cluster where I am planning to run some benchmark tests. My main intension is to run the benchmarks first with the default Hadoop configuration and then...
   Author: Gaurav Dasgupta, 2012-08-28, 07:01
Re: Info required regarding JobTracker Job Details/Metrics - MapReduce - [mail # user]
...Hi,  Thanks for your replies. Any idea how do I calculate the "total shuffle time"? I can get and calculate the total time taken by all the Mappers and all the Reducers separatey, but t...
   Author: Gaurav Dasgupta, 2012-08-23, 12:06
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