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From "Ben Clay" <rbc...@ncsu.edu>
Subject possible to re-trigger topology script on the fly?
Date Fri, 06 Jan 2012 16:27:55 GMT

If my network topology changes while a Hadoop job is running, is there any
way to re-trigger the topology script for each node?  

Looking in the code, it appears JobTracker#resolveAndAddToTopology is only
called in JobTracker#addNewTracker, so I don't see how this would be
accomplished.  However, if there are any tricks available, such as forcing a
slave to miss a heartbeat, I could use that.




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