(Removing common-dev, because this isn't really a dev question)
On Feb 25, 2011, at 5:52 AM, bikash sharma wrote:
> Hi,
> How is task slot in Hadoop defined with respect to scheduling a map/reduce
> task on such slots available on TaskTrackers?
On a TaskTracker, one sets how many maps and reduces one wants to run
on that node. The JobTracker is informed of this value. When a job is getting
scheduled, it compares the various tasks's input to see if a DataNode is
providing a matching block. If a block exists or is nearby, the task is
scheduled on that node.
