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[expand - 3 more] - Re: Find reducer for a key - MapReduce - [mail # user]
...You understood correctly the scenario. I see your rationale and thanks for your suggestions. To better explain the problem and my point of view let me make an example.  I want to read t...
   Author: Alberto Cordioli, 2013-03-30, 13:28
DistributedCache - why not read directly from HDFS? - MapReduce - [mail # user]
...Hi all,  I was not able to find an answer to the following question. If the question has already been answered please give me the pointer to the right thread.  Which are actually t...
   Author: Alberto Cordioli, 2013-03-23, 14:53
[expand - 2 more] - Re: Old vs New API - MapReduce - [mail # user]
...Thanks, Alberto  On 24 October 2012 16:33, Harsh J  wrote:    Alberto Cordioli...
   Author: Alberto Cordioli, 2012-10-25, 15:11
[expand - 1 more] - Re: DistributedCache: getLocalCacheFiles() always null - MapReduce - [mail # user]
...Ok, it was my fault. Instead of using getConf() when I added a new cache file I should use job.getConfiguration() Not it works.    Cheers, Alberto   On 19 October 2012 09:19, ...
   Author: Alberto Cordioli, 2012-10-19, 12:49
[expand - 3 more] - Re: GroupingComparator - MapReduce - [mail # user]
...Yes, I know that keeping an in-memory collection ins't a good idea. The problem is that I need to perform a join, so there is no other possibilities! :(  Cheers, Alberto  On 16 Oct...
   Author: Alberto Cordioli, 2012-10-16, 09:45
[expand - 2 more] - Re: Parallel Join with Pig - Pig - [mail # user]
...Ok, I've found....  I was using values that return all the same value % number of reducers. For an unfortunate case I tested always multiple values......Ohhh, my fault.   Cheers, A...
   Author: Alberto Cordioli, 2012-10-15, 08:20
Problem in Matrix creation - MapReduce - [mail # user]
...Hi all,  I am trying to create a matrix NxN with a MapReduce routine. To do so I need to iterate on a list of values and compare all the items of the list with each other. The problem i...
   Author: Alberto Cordioli, 2012-10-05, 10:17
[expand - 3 more] - Re: Problem with Hadoop and /etc/hosts file - HBase - [mail # user]
...I already did this, but the problem still there. When I try this command:  host 10.220.55.41  I get:  Host 41.55.220.10.in-addr.arpa. not found: 3(NXDOMAIN)  The same for...
   Author: Alberto Cordioli, 2012-09-17, 10:09
[expand - 3 more] - Re: IllegalArgumentException: Not a host:port pair - Pig 0.10.0 with HBase - Pig - [mail # user]
...Ok, I solved the problem copying the required jars in $HADOOP_HOME/lib folder.   Thanks, Alberto  On 13 September 2012 10:22, Alberto Cordioli  wrote:    Alberto Cor...
   Author: Alberto Cordioli, 2012-09-13, 09:09
[expand - 3 more] - Re: Sqoop import big MySql table in HBase - Sqoop - [mail # user]
...Perfect. Thanks for the help!  Cheers, Alberto  On 5 September 2012 16:50, abhijeet gaikwad  wrote:    Alberto Cordioli...
   Author: Alberto Cordioli, 2012-09-07, 07:20
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