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Re: What should I do with a 48-node cluster - Hadoop - [mail # user]
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...I am toying with exactly that idea. My startup does Hadoop eDiscovery, only we usually do it on EC2. Getting down to earth is exciting but worrying. Mark On Wed, Dec 19, 2012 at ...
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Author: Mark Kerzner,
2012-12-20, 03:35
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Re: What should I do with a 48-node cluster - Hadoop - [mail # user]
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...Sure, I love hardware, but aren't the hosting costs prohibitively high? Mark On Wed, Dec 19, 2012 at 9:23 PM, Mohammad Tariq wrote: ...
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Author: Mark Kerzner,
2012-12-20, 03:29
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What should I do with a 48-node cluster - Hadoop - [mail # user]
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...Hi, Someone wants to give me (OK, sell, but for the cheap) a 48-node cluster of decent blades, a few years old. Should I even thy to think of what to do with them, given that one can u...
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Author: Mark Kerzner,
2012-12-20, 03:17
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Past meeting: July Houston Hadoop Meetup - Genomic data analysis with hadoop - Hadoop - [mail # user]
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...Hi, all, that's what it was about July Houston Hadoop Meetup - Genomic data analysis with hadoop Dianhui (Dennis) Zhu presented "Genomic data analysis with hadoop". &...
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Author: Mark Kerzner,
2012-07-17, 21:29
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Re: Do I have to sort? - Hadoop - [mail # user]
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...Thank you for the great instructions! Mark On Mon, Jun 18, 2012 at 9:53 AM, John Armstrong wrote: ...
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Author: Mark Kerzner,
2012-06-18, 15:12
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Re: Do I have to sort? - Hadoop - [mail # user]
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...John, that sounds very interesting, and I may implement such a workflow, but can I write back to HDFS in the mapper? In the reducer it is a standard context.write(), but it is a differ...
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Author: Mark Kerzner,
2012-06-18, 14:40
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Do I have to sort? - Hadoop - [mail # user]
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...Hi, it may be a stupid question, but in my application I could do without sort by keys. If only reducers could be told to start their work on the first maps that they see, my processin...
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Author: Mark Kerzner,
2012-06-18, 14:19
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Re: only ouput values, no keys, no reduce - Hadoop - [mail # user]
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...You can use Hadoop NullWritable http://hadoop.apache.org/common/docs/r1.0.1/api/org/apache/hadoop/io/NullWritable.Comparator.html Mark On Mon, Jun 11, 2012 at 8:10 AM, huan...
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Author: Mark Kerzner,
2012-06-11, 13:13
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Re: Memory exception in the mapper - Hadoop - [mail # user]
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...Thanks, Joey, we are in beta, and I kinda need these for debugging. But as soon as we go to production, your word is well taken. (I hope we will replace the current primitive logging w...
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Author: Mark Kerzner,
2012-05-24, 03:44
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Re: Memory exception in the mapper - Hadoop - [mail # user]
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...Joey, that did the trick! Actually, I am writing to the log with System.out.println() statements, and I write about 12,000 lines, would that be a problem? I don't really need thi...
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Author: Mark Kerzner,
2012-05-24, 03:21
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