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Re: How would you translate this into MapReduce? - MapReduce - [mail # user]
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...If the size of a record is too big to be processed by a node you probably need to re-architect using a different record which scales better and combines cleanly You also need to ask at the s...
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Author: Steve Lewis,
2011-07-19, 19:40
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Re: How would you translate this into MapReduce? - MapReduce - [mail # user]
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...I assumed the problem was count the number of people visiting Moscow after London without considering iany intermediate stops. This leads to a data structure which is easy to combine. The st...
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Author: Steve Lewis,
2011-07-19, 17:54
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Re: How would you translate this into MapReduce? - MapReduce - [mail # user]
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...Assume Joe visits Washington, London, Paris and Moscow You start with records like Joe:Washington:20-Jan-2011 Joe:London:14-Feb2011 Joe:Paris :9-Mar-2011 You want Joe: Washington...
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Author: Steve Lewis,
2011-07-19, 17:15
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Re: How would you translate this into MapReduce? - MapReduce - [mail # user]
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...It is a little unclear what you start with and where you want to end up. Let us assume that you have a collection of triplets of person : place : time we might imagine this information...
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Author: Steve Lewis,
2011-07-19, 15:19
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Re: New to hadoop, trying to write a customary file split - MapReduce - [mail # user]
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...You are correct = they got refactored int readFromCurrentBuffer On Mon, Jul 18, 2011 at 11:47 AM, Erik T wrote: Steven M. Lewis PhD 4221 105th Ave NE Kirkland, WA 98...
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Author: Steve Lewis,
2011-07-18, 20:32
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Re: New to hadoop, trying to write a customary file split - MapReduce - [mail # user]
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...The reason for the two id that it may say .... or wrote: Steven M. Lewis PhD 4221 105th Ave NE Kirkland, WA 98033 206-384-1340 (cell) Skype lordjoe_com...
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Author: Steve Lewis,
2011-07-18, 18:20
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Re: New to hadoop, trying to write a customary file split - MapReduce - [mail # user]
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...Look at this sample ============================================ package org.systemsbiology.hadoop; import org.apache.hadoop.conf.*; import org.apache.hadoop.fs.*; import org.ap...
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Author: Steve Lewis,
2011-07-11, 19:11
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Re: security policy rules to reduce tasks? - MapReduce - [mail # user]
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...Why not install a Security Manager in the reducer's setup step? On Sun, Jul 10, 2011 at 10:26 PM, Pedro Sa Costa wrote: Steven M. Lewis PhD 4221 105th Ave NE Kirkla...
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Author: Steve Lewis,
2011-07-11, 15:19
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Re: "java.lang.Throwable: Child Error " And " Task process exit with nonzero status of 1." - MapReduce - [mail # user]
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...We have seen that limit reached when we ran a large number of jobs (3000 strikes me as the figure but the real number may be hire) It has to do with the number of files created in a 24 hour ...
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Author: Steve Lewis,
2011-07-11, 15:18
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Is there a way to insure that different jobs have the same number of reducers - MapReduce - [mail # user]
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...I am trying to run an application where I try to generate the cartesion product of two potentially large data sets. In reality I only need the cartesian product of values in the set with a p...
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Author: Steve Lewis,
2011-06-30, 01:05
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