Hi, Is there any way to ensure the execution of a map on all nodes of a clusterin a way that each node run the map once and only once. That is, I would use Hadoop to execute a method on all nodes in the cluster. Without the possibility that the method execute twice in the same node even if another node fails.
I already set mapred.tasktracker.map.tasks.maximum to 1 and mapred.max.jobs.per.node to 1 but still, if a node fails, another node that has carried out a map before run the map again to meet the absence of which failed. Luiz Carlos Melo Muniz Luiz Carlos Melo Muniz
