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Re: map side only behavior - Hadoop - [mail # user]
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...No, the merge and sort will not happen in mapper task. And each mapper task will generate one output file. 2010/1/29 Gang Luo �) 8:54:33 上午 [EMAIL PROTECTED]> �) 10:00...
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Author: Jeff Zhang,
2010-01-29, 16:05
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Re: Exception happen when start a single node - Hadoop - [mail # user]
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...Hi Nachiket, Thank you for your reply. But I don't think the page you recommend can solve my problem. The problem on your page is try to solve the namespace version incompatibility. Bu...
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Author: Jeff Zhang,
2010-01-29, 14:40
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Exception happen when start a single node - Hadoop - [mail # user]
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...Hi all, One of my machine fall into the black list, then I want to restart it. But exception happens as following: 2010-01-29 10:32:23,247 FATAL org.apache.hadoop.hdfs.server.dat...
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Author: Jeff Zhang,
2010-01-29, 02:55
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Re: Fileformat query - Hadoop - [mail # user]
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...Sorry for my mistake, the idea of writing your own InputFormat seems not a good idea. The cost of getting the line number of each split is a little high. On Fri, Jan 29, 2010 at...
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Author: Jeff Zhang,
2010-01-29, 01:54
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Re: Fileformat query - Hadoop - [mail # user]
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...I'm afraid you have to write your own InputFormat if you really want to make the line number as the key. And I believe you can reuse most of the code of TextInputFormat, since your InputForm...
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Author: Jeff Zhang,
2010-01-29, 00:40
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Re: Cleanup Attempt in Map Task - Hadoop - [mail # user]
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...One easy way is to increase the timeout by setting mapred.task.timeout in mapred-site.xml On Thu, Jan 28, 2010 at 5:59 PM, #YONG YONG CHENG# wrote: Best Rega...
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Author: Jeff Zhang,
2010-01-28, 10:24
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Re: setNumReduceTasks(1) - Hadoop - [mail # general]
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...*See my comments below* On Mon, Jan 25, 2010 at 3:22 PM, Something Something wrote: *--Maybe you can use Counter to track the number of rows you add to HBase, then ...
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Author: Jeff Zhang,
2010-01-26, 00:09
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Re: How to timeout HFDS commands - Hadoop - [mail # user]
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...Then you can put the HDFS operation in one thread, and kill the thread if you want to it timeout On Fri, Jan 22, 2010 at 6:37 PM, Yiping Han wrote: Best Regar...
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Author: Jeff Zhang,
2010-01-22, 10:40
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Re: How to timeout HFDS commands - Hadoop - [mail # user]
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...Try Ctrl+C On Fri, Jan 22, 2010 at 5:50 PM, Yiping Han wrote: Best Regards Jeff Zhang...
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Author: Jeff Zhang,
2010-01-22, 10:32
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Re: Which config parameters are node-specific? - Hadoop - [mail # user]
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...I believe all these parameters can be set as node-specific, because they are in different JVM. Correct me if I am wrong. On Wed, Jan 20, 2010 at 8:31 AM, Zhang, Zhang wrote: &nb...
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Author: Jeff Zhang,
2010-01-20, 02:32
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