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Is it possible to set number of map task running per node.
I’m using Hadoop Streaming for crawling data, and I need only one map task per node to avoid blocks.
Thanks,
Irrespective of Streaming or not, the maximum # of mappers per node can be set using the
mapreduce.tasktracker.map.tasks.maximumparameters. The parameter has to be set in themapred-site.xmlfile on the node, this property has no effect when set on the client.