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Posted to common-user@hadoop.apache.org by Sunil S Nandihalli <su...@gmail.com> on 2012/05/05 07:05:24 UTC

using IsolationRunner to debug reduce phace of the mapreduce job..

Hi Everybody,
IsolationRunner claims to be able to only rerun map-tasks and not reduce
tasks .. does anybody have a suggestion as to how I can debug the
reduce-tasks which have failed?
Thanks,
Sunil.