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Re: Which hardware to choose - Hadoop - [mail # user]
...All configs are per node. No HBase, only Hive and Pig installed  On Tue, Oct 2, 2012 at 9:40 PM, Michael Segel wrote:  ...
   Author: Alexander Pivovarov, 2012-10-03, 03:42
Re: More cores Vs More Nodes ? - Hadoop - [mail # user]
...more nodes means more IO on read on mapper step If you use combiners you might need to send only small amount of data over network to reducers  Alexander   On Tue, Dec 13, 2011 at ...
   Author: Alexander Pivovarov, 2011-12-13, 17:58
What's the diff btw setOutputKeyComparatorClass and setOutputValueGroupingComparator? - Hadoop - [mail # user]
...I tried to use one or another for secondary sort -- both options work fine  Also I noticed that if I set both of them at the same time then KeyComparatorClass.compare(O1, O2) never call...
   Author: Alexander Pivovarov, 2011-11-27, 05:13
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