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[HADOOP-10465] Fix use of generics within SortedMapWritable - Hadoop - [issue]
...SortedMapWritable could use Generics the right way so that there is no warning within the implementation and more important for the consumer....
http://issues.apache.org/jira/browse/HADOOP-10465    Author: Bertrand Dechoux, 2014-04-07, 22:56
Re: Is Hadoop's TooRunner thread-safe? - Hadoop - [mail # user]
...JIRA, test, patch and review? I am sure the community would welcome it. Andif you don't, well, it is unlikely to be appear soon into hadoop trunk.BertrandOn Fri, Mar 21, 2014 at 12:49 AM, So...
   Author: Bertrand Dechoux, 2014-03-21, 08:26
Re: Partitioner Can any one please clarify my question? - Hadoop - [mail # user]
...By using the default partitioner the key "who" will go to the partitionswith the same number and the reducer will collect all partition for a givennumber. Reducer 0 all partitions 0 and so o...
   Author: Bertrand Dechoux, 2014-03-14, 10:32
Re: Question about DataNode - Hadoop - [mail # user]
...I am not sure what your question is. You might want to be more explicit andread more about Hadoop architecture and the roles of the various daemons. Adirectory is only metadata so you can me...
   Author: Bertrand Dechoux, 2014-02-27, 10:09
Re: Mappers vs. Map tasks - Hadoop - [mail # user]
...The wiki (or Hadoop The Definitive Guide) are good ressources.https://www.inkling.com/read/hadoop-definitive-guide-tom-white-3rd/chapter-7/input-formatsMapper is the name of the abstract cla...
   Author: Bertrand Dechoux, 2014-02-25, 08:38
Re: HDFS open file limit - Hadoop - [mail # user]
...At least for each machine, there is the *ulimit *that need to be verified.RegardsBertrandBertrand DechouxOn Sun, Jan 26, 2014 at 6:32 PM, John Lilley wrote: ...
   Author: Bertrand Dechoux, 2014-01-26, 20:23
Re: how to learn hadoop 2.2.0? - Hadoop - [mail # user]
...I would point you to ''Hadoop: The Definitive Guide'http://shop.oreilly.com/product/0636920021773.doNot everything has changed with the version 2 of Hadoop. If you are able tomaster all the ...
   Author: Bertrand Dechoux, 2014-01-26, 09:17
Re: HDFS block storage - Hadoop - [mail # user]
...1) Right now, I would say jira and code. 2) It is not really a flat storage. It 'folds' itself when needed. 3) At least checksums. There are jiras about whether it should be somehow in the b...
   Author: Bertrand Dechoux, 2013-07-15, 21:36
Re: Assignment of data splits to mappers - Hadoop - [mail # user]
...1) The tradeoff is between reducing the overhead of distributed computing and reducing the cost of failure. Less tasks, less overhead but the cost of failure will be bigger, mainly because t...
   Author: Bertrand Dechoux, 2013-06-18, 21:54
Re: recovery accidently deleted pig script - Hadoop - [mail # user]
...But no the script is not send to the cluster so you won't be able to recover from here because what is send is the 'interpretation' of the script. If that was the case, that would be a quest...
   Author: Bertrand Dechoux, 2013-06-13, 09:54
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