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Re: where are my logging output files going to? - Hadoop - [mail # user]
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...what do you mean by an edge node? do you mean any node that is not the master node (or NameNode or JobTracker node)? On Wed, Mar 28, 2012 at 3:51 AM, Michel Segel wrote: ...
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Author: Jane Wayne,
2012-03-28, 08:29
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where are my logging output files going to? - Hadoop - [mail # user]
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...if i have a hadoop cluster of 10 nodes, do i have to modify the /hadoop/conf/log4j.properties files on ALL 10 nodes to be the same? currently, i ssh into the master node to execute a j...
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Author: Jane Wayne,
2012-03-28, 01:42
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Re: how can i increase the number of mappers? - Hadoop - [mail # user]
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...if anyone is facing the same problem, here's what i did. i took anil's advice to use NLineInputFormat (because that approach would scale out my mappers). however, i am using the new ma...
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Author: Jane Wayne,
2012-03-21, 16:10
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Re: how can i increase the number of mappers? - Hadoop - [mail # user]
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...as i understand, that class does not exist for new API in hadoop v0.20.2 (which is what i am using). if i am mistaken, where is it? i am looking at hadoop v1.0.1, and there is a NLineI...
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Author: Jane Wayne,
2012-03-21, 07:33
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how can i increase the number of mappers? - Hadoop - [mail # user]
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...i have a matrix that i am performing operations on. it is 10,000 rows by 5,000 columns. the total size of the file is just under 30 MB. my HDFS block size is set to 64 MB. from what i unders...
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Author: Jane Wayne,
2012-03-21, 06:07
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Re: is implementing WritableComparable and setting Job.setSortComparatorClass(...) redundant? - Hadoop - [mail # user]
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...thanks chris! On Tue, Mar 20, 2012 at 6:30 AM, Chris White wrote: ...
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Author: Jane Wayne,
2012-03-20, 15:57
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is implementing WritableComparable and setting Job.setSortComparatorClass(...) redundant? - Hadoop - [mail # user]
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...quick question: i have a key that already implements WritableComparable. this will be the intermediary key passed from the map to the reducer. is it necessary to extend RawCompar...
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Author: Jane Wayne,
2012-03-20, 06:47
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Re: does hadoop always respect setNumReduceTasks? - Hadoop - [mail # user]
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...Thanks Lance. On Thu, Mar 8, 2012 at 9:38 PM, Lance Norskog wrote: ...
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Author: Jane Wayne,
2012-03-14, 23:44
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Re: Partition classes, how to pass in background information - Hadoop - [mail # user]
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...Thanks Chris! That worked! On Wed, Mar 14, 2012 at 6:06 AM, Chris White wrote: ...
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Author: Jane Wayne,
2012-03-14, 23:42
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Partition classes, how to pass in background information - Hadoop - [mail # user]
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...i am using the new org.apache.hadoop.mapreduce.Partitioner class. however, i need to pass it some background information. how can i do this? in the old, org.apache.hadoop.mapred.Partit...
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Author: Jane Wayne,
2012-03-14, 06:31
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