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Re: Quick question - Hadoop - [mail # user]
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...The input is effectively split by lines, but under the covers, the actual splits are by byte. Each mapper will cleverly scan from the specified start to the next line after the start p...
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Author: Ted Dunning,
2011-02-18, 19:25
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Re: Hadoop in Real time applications - Hadoop - [mail # user]
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...Remove the for at the end that got sucked in by the email editor. On Thu, Feb 17, 2011 at 5:56 AM, Jason Rutherglen wrote: ...
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Author: Ted Dunning,
2011-02-17, 16:29
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Re: Hadoop in Real time applications - Hadoop - [mail # user]
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...Unless you go beyond the current standard semantics, this is true. See here: http://code.google.com/p/hop/ and http://labs.yahoo.com/node/476for alternatives. On Wed, Feb 1...
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Author: Ted Dunning,
2011-02-17, 07:48
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Re: Trying out AvatarNode - Hadoop - [mail # user]
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...http://wiki.apache.org/hadoop/HowToContribute On Wed, Feb 16, 2011 at 8:23 AM, Mark Kerzner wrote: ...
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Author: Ted Dunning,
2011-02-16, 19:11
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Re: DataCreator - Hadoop - [mail # user]
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...Sounds like Pig. Or Cascading. Or Hive. Seriously, isn't this already available? On Wed, Feb 16, 2011 at 7:06 AM, Guy Doulberg wrote: ...
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Author: Ted Dunning,
2011-02-16, 15:18
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Re: recommendation on HDDs - Hadoop - [mail # user]
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...Good idea! Would you like to create the nucleus of such a page? (there might already be something like that) On Tue, Feb 15, 2011 at 8:49 AM, Shrinivas Joshi wrote: ...
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Author: Ted Dunning,
2011-02-15, 17:31
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Re: Is this a fair summary of HDFS failover? - Hadoop - [mail # user]
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...Note that document purports to be from 2008 and, at best, was uploaded just about a year ago. That it is still pretty accurate is kind of a tribute to either the stability of hbase or ...
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Author: Ted Dunning,
2011-02-14, 20:41
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Re: hadoop 0.20 append - some clarifications - Hadoop - [mail # user]
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...HDFS definitely doesn't follow anything like POSIX file semantics. They may be a vague inspiration for what HDFS does, but generally the behavior of HDFS is not tightly specified. &nbs...
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Author: Ted Dunning,
2011-02-14, 16:47
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Re: Which strategy is proper to run an this enviroment? - Hadoop - [mail # user]
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...This sounds like it will be very inefficient. There is considerable overhead in starting Hadoop jobs. As you describe it, you will be starting thousands of jobs and paying this p...
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Author: Ted Dunning,
2011-02-12, 19:33
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Re: recommendation on HDDs - Hadoop - [mail # user]
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...The original poster also seemed somewhat interested in disk bandwidth. That is facilitated by having more than on disk in the box. On Sat, Feb 12, 2011 at 8:26 AM, Michael Segel ...
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Author: Ted Dunning,
2011-02-12, 19:22
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