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Re: Doubt from the book "Definitive Guide" - Hadoop - [mail # user]
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...On Wed, Apr 4, 2012 at 5:23 PM, Prashant Kommireddi wr ote: ll stored in HDFS? Wouldn't it make reducers fasters since reducers might be able to use data locality like mapper tasks do?...
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Author: Mohit Anchlia,
2012-04-05, 00:43
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Doubt from the book "Definitive Guide" - Hadoop - [mail # user]
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...I am going through the chapter "How mapreduce works" and have some confusion: 1) Below description of Mapper says that reducers get the output file using HTTP call. But the description...
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Author: Mohit Anchlia,
2012-04-04, 23:56
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Number of retries - Hadoop - [mail # user]
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...I am seeing wierd problem where I am seeing duplicate rows in the database. I am wondering if this is because of some internal retries that might be causing this. Is there a way to look at w...
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Author: Mohit Anchlia,
2012-03-22, 19:51
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Re: setNumTasks - Hadoop - [mail # user]
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...Sorry I meant *setNumMapTasks. *What is mapred.map.tasks for? It's confusing as to what it's purpose is for? I tried setting it for my job still I see more map tasks running than *mapred.map...
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Author: Mohit Anchlia,
2012-03-22, 14:58
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Re: setNumTasks - Hadoop - [mail # user]
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...Could someone please help me answer this question? On Wed, Mar 14, 2012 at 8:06 AM, Mohit Anchlia wrote: ...
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Author: Mohit Anchlia,
2012-03-22, 14:51
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Re: Snappy Error - Hadoop - [mail # user]
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...Looks like org.apache.hadoop.io.compress.SnappyCodec is not in the classpath? On Thu, Mar 22, 2012 at 4:30 AM, hadoop hive wrote: ...
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Author: Mohit Anchlia,
2012-03-22, 14:23
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Re: EOFException - Hadoop - [mail # user]
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...I guess I am trying to see how to debug such problems? I don't see enough info in the logs. On Mon, Mar 19, 2012 at 12:48 AM, madhu phatak wrote: ...
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Author: Mohit Anchlia,
2012-03-19, 14:26
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Re: EOFException - Hadoop - [mail # user]
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...This is actually just hadoop job over HDFS. I am assuming you also know why this is erroring out? On Thu, Mar 15, 2012 at 1:02 PM, Gopal wrote: ...
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Author: Mohit Anchlia,
2012-03-15, 20:07
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EOFException - Hadoop - [mail # user]
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...When I start a job to read data from HDFS I start getting these errors. Does anyone know what this means and how to resolve it? 2012-03-15 10:41:31,402 [Thread-5] INFO org.apache...
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Author: Mohit Anchlia,
2012-03-15, 19:06
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Re: SequenceFile split question - Hadoop - [mail # user]
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...Thanks! that helps. I am reading small xml files from external file system and then writing to the SequenceFile. I made it stand alone client thinking that mapreduce may not be the best way ...
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Author: Mohit Anchlia,
2012-03-15, 14:47
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