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Is default number of reducers = 1? - Hadoop - [mail # user]
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...Hi, I used to do job.setNumReduceTasks(1); but I realized that this is bad and commented out this line //job.setNumReduceTasks(1); I still see the number of red...
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Author: Mark Kerzner,
2012-02-21, 05:04
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Re: How to set up output field separator? - Hadoop - [mail # user]
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...Harsh, I think it worked in Hadoop 0.20, but it does not work with the new mapreduce API, and even this key, mapreduce.output.textoutputformat.separator, does not help. Maybe I s...
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Author: Mark Kerzner,
2012-02-07, 17:17
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How to set up output field separator? - Hadoop - [mail # user]
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...Hi, all, I've tried this configuration.set("map.output.key.field.separator", ","); but it did not work. How do I set the separator to another field, from its default "tab"?...
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Author: Mark Kerzner,
2012-02-07, 14:27
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Re: Can't achieve load distribution - Hadoop - [mail # user]
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...And that is exactly what I found. I have a "hack" for now - give all files on the command line - and I will wait for the next release in some distribution. Thank you, Mark ...
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Author: Mark Kerzner,
2012-02-03, 04:25
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Re: Can't achieve load distribution - Hadoop - [mail # user]
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...Praveen, this seems just like the right thing, but it's API 0.21 (I googled about the problems with it), so I have to use either the next Cloudera release, or Hortonworks, or something...
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Author: Mark Kerzner,
2012-02-02, 19:55
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Re: Can't achieve load distribution - Hadoop - [mail # user]
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...Thanks! Mark On Wed, Feb 1, 2012 at 7:44 PM, Anil Gupta wrote: ...
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Author: Mark Kerzner,
2012-02-02, 04:13
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Re: Can't achieve load distribution - Hadoop - [mail # user]
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...Anil, do you mean one block of HDFS, like 64MB? Mark On Wed, Feb 1, 2012 at 7:03 PM, Anil Gupta wrote: ...
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Author: Mark Kerzner,
2012-02-02, 01:06
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Can't achieve load distribution - Hadoop - [mail # user]
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...Hi, I have a simple MR job, and I want each Mapper to get one line from my input file (which contains further instructions for lengthy processing). Each line is 100 characters long, an...
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Author: Mark Kerzner,
2012-02-02, 00:21
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Re: Using S3 instead of HDFS - Hadoop - [mail # user]
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...Awesome important, Matt, thank you so much! Mark On Wed, Jan 18, 2012 at 10:53 AM, Matt Pouttu-Clarke wrote: ...
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Author: Mark Kerzner,
2012-01-18, 16:56
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Re: Using S3 instead of HDFS - Hadoop - [mail # user]
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...It worked, thank you, Harsh. Mark On Wed, Jan 18, 2012 at 1:16 AM, Harsh J wrote: ...
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Author: Mark Kerzner,
2012-01-18, 16:37
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