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Posted to common-user@hadoop.apache.org by pavel kolodin <pa...@gmail.com> on 2009/07/06 07:30:16 UTC

How to guarantee "hadoop health" after starting?


I can control the number of nodes that reported they are OK on NameNode.  
But there are many types of exceptions that can be thrown during copying  
files, starting jobs etc... How to catch them without JAVA? (we are using  
C++ pipes for MAP and REDUCE) How to define reaction on any type of  
error/exception?

Thanks.