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Re: - MapReduce - [mail # user]
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...Job, You need to set in on every hive session/CLI client. This property is a job level one and it is used to indicate which pool/queue a job should be submitted on to. &nb...
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Author: bejoy.hadoop@...,
2013-05-30, 15:07
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Re: Hadoop Installation Mappers setting - MapReduce - [mail # user]
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...Hi I assume the question is on how many slots. It dependents on - the child/task jvm size and the available memory. - available number of cores Your available memor...
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Author: bejoy.hadoop@...,
2013-05-23, 14:18
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Re: Viewing snappy compressed files - MapReduce - [mail # user]
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...If you have snappy codec in io.compression.codecs then you can easily decompress the data out of hdfs directly with a simple command. hadoop fs -text Regards Bejoy KS &nbs...
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Author: bejoy.hadoop@...,
2013-05-21, 16:51
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Re: Basic Doubt in Hadoop - MapReduce - [mail # user]
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...You are correct, map outputs are stored in LFS not in HDFS. Regards Bejoy KS Sent from remote device, Please excuse typos From: Ramesh R Nair Date: Wed, 17 Apr ...
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Author: bejoy.hadoop@...,
2013-04-17, 07:55
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Re: How to balance reduce job - MapReduce - [mail # user]
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...Uniform Data distribution across HDFS is one of the factor that ensures map tasks are uniformly distributed across nodes. But reduce tasks doesn't depend on data distribution it is purely ba...
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Author: bejoy.hadoop@...,
2013-04-17, 05:38
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Re: How to balance reduce job - MapReduce - [mail # user]
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...Hi Rauljin Few things to check here. What is the number of reduce slots in each Task Tracker? What is the number of reduce tasks for your job? Based on the availability of slots ...
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Author: bejoy.hadoop@...,
2013-04-17, 05:09
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Re: How to configure mapreduce archive size? - MapReduce - [mail # user]
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...You can get your Job.xml for each jobs from The JT web UI. Click on the job, on the specific job page you'll get this. Regards Bejoy KS Sent from remote device, Please excu...
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Author: bejoy.hadoop@...,
2013-04-16, 18:05
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Re: VM reuse! - MapReduce - [mail # user]
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...Hi Rahul AFAIK there is no guarantee that 1 task would be on N1 and another on N2. Both can be on N1 as well. JT has no notion of JVM reuse. It doesn't consider that for task sch...
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Author: bejoy.hadoop@...,
2013-04-16, 16:45
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Re: Newbie Debuggin Question - MapReduce - [mail # user]
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...Hi Sai The location you are seeing should be the mapred.local.dir . From my understanding the files in distributed cache would be available in that location while you are runnin...
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Author: bejoy.hadoop@...,
2013-02-21, 14:05
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Re: Submitting MapReduce job from remote server using JobClient - MapReduce - [mail # user]
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...Hi Amit, Apart for the hadoop jars, Do you have the same config files ($HADOOP_HOME/conf) that are in the cluster on your analytics server as well? If you are having the default ...
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Author: bejoy.hadoop@...,
2013-01-24, 19:49
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