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is it possible to specify an empty key-value separator for TextOutputFormat? - Hadoop - [mail # user]
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...Hello list, I'm trying to specify from the command line an empty string as the key-value separator for TextOutputFormat. I'm specifying a blank as the value for the m...
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Author: Luca Pireddu,
2012-02-09, 10:27
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Re: running sqoop on hadoop cluster - Hadoop - [mail # user]
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...On 10/24/2011 12:26 PM, oleksiy wrote: Actually, the "masters" file contains the name of the secondary namenode (see http://developer.yahoo.com/hadoop/tutorial/module7.html#confi...
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Author: Luca Pireddu,
2011-10-25, 07:13
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Re: Is it possible to access the HDFS via Java OUTSIDE the Cluster? - Hadoop - [mail # user]
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...On 09/05/2011 05:42 PM, Sofia Georgiakaki wrote: You certainly can access a file on HDFS through a simple Java program. You can also access your files with an even simpler Python...
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Author: Luca Pireddu,
2011-09-06, 12:26
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Re: Multiple Output Formats - Hadoop - [mail # user]
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...On July 26, 2011 06:11:33 PM Roger Chen wrote: Hello, I have a working sample here: http://biodoop-seal.bzr.sourceforge.net/bzr/biodoop- seal/trunk/annotate/head%3A/src/it/...
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Author: Luca Pireddu,
2011-07-27, 06:30
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Re: Sorting ... - Hadoop - [mail # user]
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...On May 25, 2011 22:15:50 Mark question wrote: If you want to achieve a global sort, then look at how TeraSort does it: http://sortbenchmark.org/YahooHadoop.pdf The idea is...
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Author: Luca Pireddu,
2011-05-26, 07:45
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Re: Sorting ... - Hadoop - [mail # user]
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...On May 25, 2011 01:43:22 Mark question wrote: Maybe this class can help? org.apache.hadoop.mapreduce.lib.input.SequenceFileInputFormat With it you should be able to ...
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Author: Luca Pireddu,
2011-05-25, 09:09
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Re: get name of file in mapper output directory - Hadoop - [mail # user]
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...On May 25, 2011 00:28:10 Mark question wrote: Indeed, output is written to the _temporary directory and then moved by a FileOutputCommitter once all tasks are done. Why do ...
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Author: Luca Pireddu,
2011-05-25, 08:51
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Re: I can't see this email ... So to clarify .. - Hadoop - [mail # user]
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...Is /cs/student/mark/ on the *shared* NFS volume you mentioned in your original post? In that case all nodes would be trying to use the exact same directory. Lu...
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Author: Luca Pireddu,
2011-05-25, 08:39
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Re: get name of file in mapper output directory - Hadoop - [mail # user]
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... The path is defined by the FileOutputFormat in use. In particular, I think this function is responsible: http://hadoop.apache.org/common/docs/r0.20.2/api/org/apache/h...
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Author: Luca Pireddu,
2011-05-23, 12:51
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Re: Sorting ... - Hadoop - [mail # user]
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...On May 22, 2011 03:21:53 Mark question wrote: Terasort sorts lines of text. The InputFormat (for version 0.20.2) is in hadoop-0.20.2/src/examples/org/apache/hadoop...
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Author: Luca Pireddu,
2011-05-23, 07:33
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